I just thought of comparing csound's performance between v5 and v6.
With the attached csd I get:

Csound5---->Elapsed time at end of performance: real: 0.363s, CPU: 0.358s
Csound6---->Elapsed time at end of performance: real: 0.724s, CPU: 0.712s

Strange, no?

Thanks
Peiman

On 5 March 2013 20:08, Victor Lazzarini  wrote:
> No, there is no special branch.
>
> Victor
> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>
> I tried GIT head for Csound 6 a few days ago and didn't see speedups for
> multicore. Is it in a separate branch or is there some build configuration I
> need?
>
> Regards,
> Mike
>
>
> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini 
> wrote:
>>
>> The Csound 6 multicore implementation delivers substantial gains, and the
>> way it has been designed, context-switching is not problematic. You
>> can check the code in csound6 GIT. The multicore code is in Top/csound.c.
>>
>> Victor
>> On 5 Mar 2013, at 19:18, imaia wrote:
>>
>> > It's a great news about csound 6.
>> >
>> > Looking at 'Top/threads.c' in cs5,  I can see that everything is done
>> > with
>> > mutexes and condition variables.  I don't know if I'm looking at the
>> > right
>> > file, but the problem with mutexes is the context switch overhead, it
>> > wastes
>> > a lot of time to switch threads in this way.
>> >
>> > I've been working with  multi-thread implementations. In fine grained
>> > processing like synthesis I think spinlocks are better and faster for
>> > thread
>> > synchronization.
>> >
>> > Another good feature in cs6 could be "CPU affinity". In this way users
>> > could
>> > associate instruments to certain CPU set. It improves locality and cache
>> > utilisation leading better performance.
>> > System tasks like interrupts and syscalls(printf) could use a specific
>> > CPU.
>> > These features would be great in embedded environments.
>> >
>> > I'm tuning my implementation in this way, but it's a lot of work.
>> > I'm planning to write an article at the end to report my experience.
>> >
>> > Thanks.
>> >
>> >
>> >
>> > --
>> > View this message in context:
>> > http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>> > Sent from the Csound - General mailing list archive at Nabble.com.
>> >
>> >
>> > Send bugs reports to the Sourceforge bug tracker
>> >            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> > Discussions of bugs and features can be posted here
>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> > csound"
>> >
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>>
>
>
>
> --
> Michael Gogins
> Irreducible Productions
> http://www.michael-gogins.com
> Michael dot Gogins at gmail dot com
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
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> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>

No, because there is quite a bit of printing etc. and the version you have there is a debug one as well (so you are not comparing like for like). The release version should be
faster.

Victor
On 5 Mar 2013, at 20:17, peiman khosravi wrote:

> I just thought of comparing csound's performance between v5 and v6.
> With the attached csd I get:
> 
> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU: 0.358s
> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU: 0.712s
> 
> Strange, no?
> 
> Thanks
> Peiman
> 
> On 5 March 2013 20:08, Victor Lazzarini  wrote:
>> No, there is no special branch.
>> 
>> Victor
>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>> 
>> I tried GIT head for Csound 6 a few days ago and didn't see speedups for
>> multicore. Is it in a separate branch or is there some build configuration I
>> need?
>> 
>> Regards,
>> Mike
>> 
>> 
>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini 
>> wrote:
>>> 
>>> The Csound 6 multicore implementation delivers substantial gains, and the
>>> way it has been designed, context-switching is not problematic. You
>>> can check the code in csound6 GIT. The multicore code is in Top/csound.c.
>>> 
>>> Victor
>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>> 
>>>> It's a great news about csound 6.
>>>> 
>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is done
>>>> with
>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>> right
>>>> file, but the problem with mutexes is the context switch overhead, it
>>>> wastes
>>>> a lot of time to switch threads in this way.
>>>> 
>>>> I've been working with  multi-thread implementations. In fine grained
>>>> processing like synthesis I think spinlocks are better and faster for
>>>> thread
>>>> synchronization.
>>>> 
>>>> Another good feature in cs6 could be "CPU affinity". In this way users
>>>> could
>>>> associate instruments to certain CPU set. It improves locality and cache
>>>> utilisation leading better performance.
>>>> System tasks like interrupts and syscalls(printf) could use a specific
>>>> CPU.
>>>> These features would be great in embedded environments.
>>>> 
>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>> I'm planning to write an article at the end to report my experience.
>>>> 
>>>> Thanks.
>>>> 
>>>> 
>>>> 
>>>> --
>>>> View this message in context:
>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>> 
>>>> 
>>>> Send bugs reports to the Sourceforge bug tracker
>>>>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>> Discussions of bugs and features can be posted here
>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>>> csound"
>>>> 
>>> 
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Send bugs reports to the Sourceforge bug tracker
>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>> 
>> 
>> 
>> 
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
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Great, thanks Victor.

Peiman

On 5 March 2013 20:46, Victor Lazzarini  wrote:
> The OSX binaries Peiman is trying has all the debug switched on, so it is
> slower.  Turn all the debugging off and build release.
> Also there might be other gains to be had along the way, so comparing
> csound5 and csound6 is not going to be very meaningful at this point.
> This is an altogether different question to multicore testing.  In my oldish
> 2 core machine, I get definite speedups with -j2 on most things with
> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
> good platform for multicore testing.
>
> Victor
>
> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>
> How build the fastest version of Csound6 then?
>
>
> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini 
> wrote:
>>
>> No, because there is quite a bit of printing etc. and the version you have
>> there is a debug one as well (so you are not comparing like for like). The
>> release version should be
>> faster.
>>
>> Victor
>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>
>> > I just thought of comparing csound's performance between v5 and v6.
>> > With the attached csd I get:
>> >
>> > Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>> > 0.358s
>> > Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>> > 0.712s
>> >
>> > Strange, no?
>> >
>> > Thanks
>> > Peiman
>> >
>> > On 5 March 2013 20:08, Victor Lazzarini 
>> > wrote:
>> >> No, there is no special branch.
>> >>
>> >> Victor
>> >> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>> >>
>> >> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>> >> for
>> >> multicore. Is it in a separate branch or is there some build
>> >> configuration I
>> >> need?
>> >>
>> >> Regards,
>> >> Mike
>> >>
>> >>
>> >> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>> >> 
>> >> wrote:
>> >>>
>> >>> The Csound 6 multicore implementation delivers substantial gains, and
>> >>> the
>> >>> way it has been designed, context-switching is not problematic. You
>> >>> can check the code in csound6 GIT. The multicore code is in
>> >>> Top/csound.c.
>> >>>
>> >>> Victor
>> >>> On 5 Mar 2013, at 19:18, imaia wrote:
>> >>>
>> >>>> It's a great news about csound 6.
>> >>>>
>> >>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is done
>> >>>> with
>> >>>> mutexes and condition variables.  I don't know if I'm looking at the
>> >>>> right
>> >>>> file, but the problem with mutexes is the context switch overhead, it
>> >>>> wastes
>> >>>> a lot of time to switch threads in this way.
>> >>>>
>> >>>> I've been working with  multi-thread implementations. In fine grained
>> >>>> processing like synthesis I think spinlocks are better and faster for
>> >>>> thread
>> >>>> synchronization.
>> >>>>
>> >>>> Another good feature in cs6 could be "CPU affinity". In this way
>> >>>> users
>> >>>> could
>> >>>> associate instruments to certain CPU set. It improves locality and
>> >>>> cache
>> >>>> utilisation leading better performance.
>> >>>> System tasks like interrupts and syscalls(printf) could use a
>> >>>> specific
>> >>>> CPU.
>> >>>> These features would be great in embedded environments.
>> >>>>
>> >>>> I'm tuning my implementation in this way, but it's a lot of work.
>> >>>> I'm planning to write an article at the end to report my experience.
>> >>>>
>> >>>> Thanks.
>> >>>>
>> >>>>
>> >>>>
>> >>>> --
>> >>>> View this message in context:
>> >>>>
>> >>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>> >>>> Sent from the Csound - General mailing list archive at Nabble.com.
>> >>>>
>> >>>>
>> >>>> Send bugs reports to the Sourceforge bug tracker
>> >>>>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> >>>> Discussions of bugs and features can be posted here
>> >>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>> >>>> "unsubscribe
>> >>>> csound"
>> >>>>
>> >>>
>> >>> Dr Victor Lazzarini
>> >>> Senior Lecturer
>> >>> Dept. of Music
>> >>> NUI Maynooth Ireland
>> >>> tel.: +353 1 708 3545
>> >>> Victor dot Lazzarini AT nuim dot ie
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> Send bugs reports to the Sourceforge bug tracker
>> >>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> >>> Discussions of bugs and features can be posted here
>> >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>> >>> "unsubscribe
>> >>> csound"
>> >>>
>> >>
>> >>
>> >>
>> >> --
>> >> Michael Gogins
>> >> Irreducible Productions
>> >> http://www.michael-gogins.com
>> >> Michael dot Gogins at gmail dot com
>> >>
>> >> ------------------------------------------------------------------------------
>> >> Everyone hates slow websites. So do we.
>> >> Make your web apps faster with AppDynamics
>> >> Download AppDynamics Lite for free today:
>> >>
>> >> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> >> Csound-devel mailing list
>> >> Csound-devel@lists.sourceforge.net
>> >> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >>
>> >>
>> >> Dr Victor Lazzarini
>> >> Senior Lecturer
>> >> Dept. of Music
>> >> NUI Maynooth Ireland
>> >> tel.: +353 1 708 3545
>> >> Victor dot Lazzarini AT nuim dot ie
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> ------------------------------------------------------------------------------
>> >> Everyone hates slow websites. So do we.
>> >> Make your web apps faster with AppDynamics
>> >> Download AppDynamics Lite for free today:
>> >> http://p.sf.net/sfu/appdyn_d2d_feb
>> >> _______________________________________________
>> >> Csound-devel mailing list
>> >> Csound-devel@lists.sourceforge.net
>> >> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >>
>> >
>> > ------------------------------------------------------------------------------
>> > Everyone hates slow websites. So do we.
>> > Make your web apps faster with AppDynamics
>> > Download AppDynamics Lite for free today:
>> >
>> > http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> > Csound-devel mailing list
>> > Csound-devel@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
>
>
>
> --
> Michael Gogins
> Irreducible Productions
> http://www.michael-gogins.com
> Michael dot Gogins at gmail dot com
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
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> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>

------------------------------------------------------------------------------
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This could be related to the already reported bugs but I should
probably mention it. With the current build that I have the previously
attached csd doesn't reach and end with -j2 flag (but no errors).

Might be worth trying it on your system.

Best,
Peiman

On 5 March 2013 21:13, Victor Lazzarini  wrote:
> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
> -j 2
>
> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>
> I will try this again. I probably had ksmps too low.
>
> Thanks,
> Mike
>
>
> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
> wrote:
>>
>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>> slower.  Turn all the debugging off and build release.
>> Also there might be other gains to be had along the way, so comparing
>> csound5 and csound6 is not going to be very meaningful at this point.
>> This is an altogether different question to multicore testing.  In my
>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>> good platform for multicore testing.
>>
>> Victor
>>
>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>
>> How build the fastest version of Csound6 then?
>>
>>
>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>  wrote:
>>>
>>> No, because there is quite a bit of printing etc. and the version you
>>> have there is a debug one as well (so you are not comparing like for like).
>>> The release version should be
>>> faster.
>>>
>>> Victor
>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>
>>> > I just thought of comparing csound's performance between v5 and v6.
>>> > With the attached csd I get:
>>> >
>>> > Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>> > 0.358s
>>> > Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>> > 0.712s
>>> >
>>> > Strange, no?
>>> >
>>> > Thanks
>>> > Peiman
>>> >
>>> > On 5 March 2013 20:08, Victor Lazzarini 
>>> > wrote:
>>> >> No, there is no special branch.
>>> >>
>>> >> Victor
>>> >> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>> >>
>>> >> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>> >> for
>>> >> multicore. Is it in a separate branch or is there some build
>>> >> configuration I
>>> >> need?
>>> >>
>>> >> Regards,
>>> >> Mike
>>> >>
>>> >>
>>> >> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>> >> 
>>> >> wrote:
>>> >>>
>>> >>> The Csound 6 multicore implementation delivers substantial gains, and
>>> >>> the
>>> >>> way it has been designed, context-switching is not problematic. You
>>> >>> can check the code in csound6 GIT. The multicore code is in
>>> >>> Top/csound.c.
>>> >>>
>>> >>> Victor
>>> >>> On 5 Mar 2013, at 19:18, imaia wrote:
>>> >>>
>>> >>>> It's a great news about csound 6.
>>> >>>>
>>> >>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>> >>>> done
>>> >>>> with
>>> >>>> mutexes and condition variables.  I don't know if I'm looking at the
>>> >>>> right
>>> >>>> file, but the problem with mutexes is the context switch overhead,
>>> >>>> it
>>> >>>> wastes
>>> >>>> a lot of time to switch threads in this way.
>>> >>>>
>>> >>>> I've been working with  multi-thread implementations. In fine
>>> >>>> grained
>>> >>>> processing like synthesis I think spinlocks are better and faster
>>> >>>> for
>>> >>>> thread
>>> >>>> synchronization.
>>> >>>>
>>> >>>> Another good feature in cs6 could be "CPU affinity". In this way
>>> >>>> users
>>> >>>> could
>>> >>>> associate instruments to certain CPU set. It improves locality and
>>> >>>> cache
>>> >>>> utilisation leading better performance.
>>> >>>> System tasks like interrupts and syscalls(printf) could use a
>>> >>>> specific
>>> >>>> CPU.
>>> >>>> These features would be great in embedded environments.
>>> >>>>
>>> >>>> I'm tuning my implementation in this way, but it's a lot of work.
>>> >>>> I'm planning to write an article at the end to report my experience.
>>> >>>>
>>> >>>> Thanks.
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> --
>>> >>>> View this message in context:
>>> >>>>
>>> >>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>> >>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>> >>>>
>>> >>>>
>>> >>>> Send bugs reports to the Sourceforge bug tracker
>>> >>>>
>>> >>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> >>>> Discussions of bugs and features can be posted here
>>> >>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>> >>>> "unsubscribe
>>> >>>> csound"
>>> >>>>
>>> >>>
>>> >>> Dr Victor Lazzarini
>>> >>> Senior Lecturer
>>> >>> Dept. of Music
>>> >>> NUI Maynooth Ireland
>>> >>> tel.: +353 1 708 3545
>>> >>> Victor dot Lazzarini AT nuim dot ie
>>> >>>
>>> >>>
>>> >>>
>>> >>>
>>> >>>
>>> >>> Send bugs reports to the Sourceforge bug tracker
>>> >>>
>>> >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> >>> Discussions of bugs and features can be posted here
>>> >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>> >>> "unsubscribe
>>> >>> csound"
>>> >>>
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> Michael Gogins
>>> >> Irreducible Productions
>>> >> http://www.michael-gogins.com
>>> >> Michael dot Gogins at gmail dot com
>>> >>
>>> >> ------------------------------------------------------------------------------
>>> >> Everyone hates slow websites. So do we.
>>> >> Make your web apps faster with AppDynamics
>>> >> Download AppDynamics Lite for free today:
>>> >>
>>> >> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> >> Csound-devel mailing list
>>> >> Csound-devel@lists.sourceforge.net
>>> >> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> >>
>>> >>
>>> >> Dr Victor Lazzarini
>>> >> Senior Lecturer
>>> >> Dept. of Music
>>> >> NUI Maynooth Ireland
>>> >> tel.: +353 1 708 3545
>>> >> Victor dot Lazzarini AT nuim dot ie
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> ------------------------------------------------------------------------------
>>> >> Everyone hates slow websites. So do we.
>>> >> Make your web apps faster with AppDynamics
>>> >> Download AppDynamics Lite for free today:
>>> >> http://p.sf.net/sfu/appdyn_d2d_feb
>>> >> _______________________________________________
>>> >> Csound-devel mailing list
>>> >> Csound-devel@lists.sourceforge.net
>>> >> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> >>
>>> >
>>> > ------------------------------------------------------------------------------
>>> > Everyone hates slow websites. So do we.
>>> > Make your web apps faster with AppDynamics
>>> > Download AppDynamics Lite for free today:
>>> >
>>> > http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> > Csound-devel mailing list
>>> > Csound-devel@lists.sourceforge.net
>>> > https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>>
>>
>>
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>>
>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>
>
>
> --
> Michael Gogins
> Irreducible Productions
> http://www.michael-gogins.com
> Michael dot Gogins at gmail dot com
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>

------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://p.sf.net/sfu/appdyn_d2d_feb
_______________________________________________
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it finishes here OK.
On 5 Mar 2013, at 21:26, peiman khosravi wrote:

> This could be related to the already reported bugs but I should
> probably mention it. With the current build that I have the previously
> attached csd doesn't reach and end with -j2 flag (but no errors).
> 
> Might be worth trying it on your system.
> 
> Best,
> Peiman
> 
> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>> -j 2
>> 
>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>> 
>> I will try this again. I probably had ksmps too low.
>> 
>> Thanks,
>> Mike
>> 
>> 
>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>> wrote:
>>> 
>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>> slower.  Turn all the debugging off and build release.
>>> Also there might be other gains to be had along the way, so comparing
>>> csound5 and csound6 is not going to be very meaningful at this point.
>>> This is an altogether different question to multicore testing.  In my
>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>> good platform for multicore testing.
>>> 
>>> Victor
>>> 
>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>> 
>>> How build the fastest version of Csound6 then?
>>> 
>>> 
>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>  wrote:
>>>> 
>>>> No, because there is quite a bit of printing etc. and the version you
>>>> have there is a debug one as well (so you are not comparing like for like).
>>>> The release version should be
>>>> faster.
>>>> 
>>>> Victor
>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>> 
>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>> With the attached csd I get:
>>>>> 
>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>> 0.358s
>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>> 0.712s
>>>>> 
>>>>> Strange, no?
>>>>> 
>>>>> Thanks
>>>>> Peiman
>>>>> 
>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>> wrote:
>>>>>> No, there is no special branch.
>>>>>> 
>>>>>> Victor
>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>> 
>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>> for
>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>> configuration I
>>>>>> need?
>>>>>> 
>>>>>> Regards,
>>>>>> Mike
>>>>>> 
>>>>>> 
>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>> 
>>>>>> wrote:
>>>>>>> 
>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>> the
>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>> Top/csound.c.
>>>>>>> 
>>>>>>> Victor
>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>> 
>>>>>>>> It's a great news about csound 6.
>>>>>>>> 
>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>> done
>>>>>>>> with
>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>> right
>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>> it
>>>>>>>> wastes
>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>> 
>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>> grained
>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>> for
>>>>>>>> thread
>>>>>>>> synchronization.
>>>>>>>> 
>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>> users
>>>>>>>> could
>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>> cache
>>>>>>>> utilisation leading better performance.
>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>> specific
>>>>>>>> CPU.
>>>>>>>> These features would be great in embedded environments.
>>>>>>>> 
>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>> 
>>>>>>>> Thanks.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> --
>>>>>>>> View this message in context:
>>>>>>>> 
>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>> 
>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>> "unsubscribe
>>>>>>>> csound"
>>>>>>>> 
>>>>>>> 
>>>>>>> Dr Victor Lazzarini
>>>>>>> Senior Lecturer
>>>>>>> Dept. of Music
>>>>>>> NUI Maynooth Ireland
>>>>>>> tel.: +353 1 708 3545
>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>> 
>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>> Discussions of bugs and features can be posted here
>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>> "unsubscribe
>>>>>>> csound"
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> Michael Gogins
>>>>>> Irreducible Productions
>>>>>> http://www.michael-gogins.com
>>>>>> Michael dot Gogins at gmail dot com
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> 
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>>> 
>>>>>> Dr Victor Lazzarini
>>>>>> Senior Lecturer
>>>>>> Dept. of Music
>>>>>> NUI Maynooth Ireland
>>>>>> tel.: +353 1 708 3545
>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>> _______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> 
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>> 
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Michael Gogins
>>> Irreducible Productions
>>> http://www.michael-gogins.com
>>> Michael dot Gogins at gmail dot com
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> 
>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>> 
>> 
>> 
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
> 
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
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_______________________________________________
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Csound-devel@lists.sourceforge.net

But with ksmps=1 there will be no gains with multicore performance.
On 5 Mar 2013, at 21:26, peiman khosravi wrote:

> This could be related to the already reported bugs but I should
> probably mention it. With the current build that I have the previously
> attached csd doesn't reach and end with -j2 flag (but no errors).
> 
> Might be worth trying it on your system.
> 
> Best,
> Peiman
> 
> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>> -j 2
>> 
>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>> 
>> I will try this again. I probably had ksmps too low.
>> 
>> Thanks,
>> Mike
>> 
>> 
>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>> wrote:
>>> 
>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>> slower.  Turn all the debugging off and build release.
>>> Also there might be other gains to be had along the way, so comparing
>>> csound5 and csound6 is not going to be very meaningful at this point.
>>> This is an altogether different question to multicore testing.  In my
>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>> good platform for multicore testing.
>>> 
>>> Victor
>>> 
>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>> 
>>> How build the fastest version of Csound6 then?
>>> 
>>> 
>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>  wrote:
>>>> 
>>>> No, because there is quite a bit of printing etc. and the version you
>>>> have there is a debug one as well (so you are not comparing like for like).
>>>> The release version should be
>>>> faster.
>>>> 
>>>> Victor
>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>> 
>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>> With the attached csd I get:
>>>>> 
>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>> 0.358s
>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>> 0.712s
>>>>> 
>>>>> Strange, no?
>>>>> 
>>>>> Thanks
>>>>> Peiman
>>>>> 
>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>> wrote:
>>>>>> No, there is no special branch.
>>>>>> 
>>>>>> Victor
>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>> 
>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>> for
>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>> configuration I
>>>>>> need?
>>>>>> 
>>>>>> Regards,
>>>>>> Mike
>>>>>> 
>>>>>> 
>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>> 
>>>>>> wrote:
>>>>>>> 
>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>> the
>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>> Top/csound.c.
>>>>>>> 
>>>>>>> Victor
>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>> 
>>>>>>>> It's a great news about csound 6.
>>>>>>>> 
>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>> done
>>>>>>>> with
>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>> right
>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>> it
>>>>>>>> wastes
>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>> 
>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>> grained
>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>> for
>>>>>>>> thread
>>>>>>>> synchronization.
>>>>>>>> 
>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>> users
>>>>>>>> could
>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>> cache
>>>>>>>> utilisation leading better performance.
>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>> specific
>>>>>>>> CPU.
>>>>>>>> These features would be great in embedded environments.
>>>>>>>> 
>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>> 
>>>>>>>> Thanks.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> --
>>>>>>>> View this message in context:
>>>>>>>> 
>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>> 
>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>> "unsubscribe
>>>>>>>> csound"
>>>>>>>> 
>>>>>>> 
>>>>>>> Dr Victor Lazzarini
>>>>>>> Senior Lecturer
>>>>>>> Dept. of Music
>>>>>>> NUI Maynooth Ireland
>>>>>>> tel.: +353 1 708 3545
>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>> 
>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>> Discussions of bugs and features can be posted here
>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>> "unsubscribe
>>>>>>> csound"
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> Michael Gogins
>>>>>> Irreducible Productions
>>>>>> http://www.michael-gogins.com
>>>>>> Michael dot Gogins at gmail dot com
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> 
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>>> 
>>>>>> Dr Victor Lazzarini
>>>>>> Senior Lecturer
>>>>>> Dept. of Music
>>>>>> NUI Maynooth Ireland
>>>>>> tel.: +353 1 708 3545
>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>> _______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> 
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>> 
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Michael Gogins
>>> Irreducible Productions
>>> http://www.michael-gogins.com
>>> Michael dot Gogins at gmail dot com
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> 
>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>> 
>> 
>> 
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
> 
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
http://p.sf.net/sfu/symantec-dev2dev
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net

Also  a single instance of an instrument will not parallelise. Parallelism works at instrument instance level.
On 5 Mar 2013, at 21:26, peiman khosravi wrote:

> This could be related to the already reported bugs but I should
> probably mention it. With the current build that I have the previously
> attached csd doesn't reach and end with -j2 flag (but no errors).
> 
> Might be worth trying it on your system.
> 
> Best,
> Peiman
> 
> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>> -j 2
>> 
>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>> 
>> I will try this again. I probably had ksmps too low.
>> 
>> Thanks,
>> Mike
>> 
>> 
>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>> wrote:
>>> 
>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>> slower.  Turn all the debugging off and build release.
>>> Also there might be other gains to be had along the way, so comparing
>>> csound5 and csound6 is not going to be very meaningful at this point.
>>> This is an altogether different question to multicore testing.  In my
>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>> good platform for multicore testing.
>>> 
>>> Victor
>>> 
>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>> 
>>> How build the fastest version of Csound6 then?
>>> 
>>> 
>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>  wrote:
>>>> 
>>>> No, because there is quite a bit of printing etc. and the version you
>>>> have there is a debug one as well (so you are not comparing like for like).
>>>> The release version should be
>>>> faster.
>>>> 
>>>> Victor
>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>> 
>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>> With the attached csd I get:
>>>>> 
>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>> 0.358s
>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>> 0.712s
>>>>> 
>>>>> Strange, no?
>>>>> 
>>>>> Thanks
>>>>> Peiman
>>>>> 
>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>> wrote:
>>>>>> No, there is no special branch.
>>>>>> 
>>>>>> Victor
>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>> 
>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>> for
>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>> configuration I
>>>>>> need?
>>>>>> 
>>>>>> Regards,
>>>>>> Mike
>>>>>> 
>>>>>> 
>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>> 
>>>>>> wrote:
>>>>>>> 
>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>> the
>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>> Top/csound.c.
>>>>>>> 
>>>>>>> Victor
>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>> 
>>>>>>>> It's a great news about csound 6.
>>>>>>>> 
>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>> done
>>>>>>>> with
>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>> right
>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>> it
>>>>>>>> wastes
>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>> 
>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>> grained
>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>> for
>>>>>>>> thread
>>>>>>>> synchronization.
>>>>>>>> 
>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>> users
>>>>>>>> could
>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>> cache
>>>>>>>> utilisation leading better performance.
>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>> specific
>>>>>>>> CPU.
>>>>>>>> These features would be great in embedded environments.
>>>>>>>> 
>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>> 
>>>>>>>> Thanks.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> --
>>>>>>>> View this message in context:
>>>>>>>> 
>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>> 
>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>> "unsubscribe
>>>>>>>> csound"
>>>>>>>> 
>>>>>>> 
>>>>>>> Dr Victor Lazzarini
>>>>>>> Senior Lecturer
>>>>>>> Dept. of Music
>>>>>>> NUI Maynooth Ireland
>>>>>>> tel.: +353 1 708 3545
>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>> 
>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>> Discussions of bugs and features can be posted here
>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>> "unsubscribe
>>>>>>> csound"
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> Michael Gogins
>>>>>> Irreducible Productions
>>>>>> http://www.michael-gogins.com
>>>>>> Michael dot Gogins at gmail dot com
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> 
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>>> 
>>>>>> Dr Victor Lazzarini
>>>>>> Senior Lecturer
>>>>>> Dept. of Music
>>>>>> NUI Maynooth Ireland
>>>>>> tel.: +353 1 708 3545
>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>> _______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> 
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>> 
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Michael Gogins
>>> Irreducible Productions
>>> http://www.michael-gogins.com
>>> Michael dot Gogins at gmail dot com
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> 
>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>>> 
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>> 
>> 
>> 
>> 
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
> 
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
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_______________________________________________
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I see, thanks for checking. Good to know it works there.

I suppose this particular csd can't really benefit from multicore and
for the other stuff it would be easy to use one instrument per
channel.

However, if global f-sigs were supported then we could break the jobs
much more flexibly across different CPUs.

Thanks
P

On 5 March 2013 22:38, Victor Lazzarini  wrote:
> Also  a single instance of an instrument will not parallelise. Parallelism works at instrument instance level.
> On 5 Mar 2013, at 21:26, peiman khosravi wrote:
>
>> This could be related to the already reported bugs but I should
>> probably mention it. With the current build that I have the previously
>> attached csd doesn't reach and end with -j2 flag (but no errors).
>>
>> Might be worth trying it on your system.
>>
>> Best,
>> Peiman
>>
>> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>>> -j 2
>>>
>>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>>>
>>> I will try this again. I probably had ksmps too low.
>>>
>>> Thanks,
>>> Mike
>>>
>>>
>>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>>> wrote:
>>>>
>>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>>> slower.  Turn all the debugging off and build release.
>>>> Also there might be other gains to be had along the way, so comparing
>>>> csound5 and csound6 is not going to be very meaningful at this point.
>>>> This is an altogether different question to multicore testing.  In my
>>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>>> good platform for multicore testing.
>>>>
>>>> Victor
>>>>
>>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>>>
>>>> How build the fastest version of Csound6 then?
>>>>
>>>>
>>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>>  wrote:
>>>>>
>>>>> No, because there is quite a bit of printing etc. and the version you
>>>>> have there is a debug one as well (so you are not comparing like for like).
>>>>> The release version should be
>>>>> faster.
>>>>>
>>>>> Victor
>>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>>>
>>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>>> With the attached csd I get:
>>>>>>
>>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>>> 0.358s
>>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>>> 0.712s
>>>>>>
>>>>>> Strange, no?
>>>>>>
>>>>>> Thanks
>>>>>> Peiman
>>>>>>
>>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>>> wrote:
>>>>>>> No, there is no special branch.
>>>>>>>
>>>>>>> Victor
>>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>>>
>>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>>> for
>>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>>> configuration I
>>>>>>> need?
>>>>>>>
>>>>>>> Regards,
>>>>>>> Mike
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>>> 
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>>> the
>>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>>> Top/csound.c.
>>>>>>>>
>>>>>>>> Victor
>>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>>>
>>>>>>>>> It's a great news about csound 6.
>>>>>>>>>
>>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>>> done
>>>>>>>>> with
>>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>>> right
>>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>>> it
>>>>>>>>> wastes
>>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>>>
>>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>>> grained
>>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>>> for
>>>>>>>>> thread
>>>>>>>>> synchronization.
>>>>>>>>>
>>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>>> users
>>>>>>>>> could
>>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>>> cache
>>>>>>>>> utilisation leading better performance.
>>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>>> specific
>>>>>>>>> CPU.
>>>>>>>>> These features would be great in embedded environments.
>>>>>>>>>
>>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>>>
>>>>>>>>> Thanks.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> View this message in context:
>>>>>>>>>
>>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>>
>>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>>> "unsubscribe
>>>>>>>>> csound"
>>>>>>>>>
>>>>>>>>
>>>>>>>> Dr Victor Lazzarini
>>>>>>>> Senior Lecturer
>>>>>>>> Dept. of Music
>>>>>>>> NUI Maynooth Ireland
>>>>>>>> tel.: +353 1 708 3545
>>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>
>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>> "unsubscribe
>>>>>>>> csound"
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Michael Gogins
>>>>>>> Irreducible Productions
>>>>>>> http://www.michael-gogins.com
>>>>>>> Michael dot Gogins at gmail dot com
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Everyone hates slow websites. So do we.
>>>>>>> Make your web apps faster with AppDynamics
>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>
>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>>> Csound-devel mailing list
>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>
>>>>>>>
>>>>>>> Dr Victor Lazzarini
>>>>>>> Senior Lecturer
>>>>>>> Dept. of Music
>>>>>>> NUI Maynooth Ireland
>>>>>>> tel.: +353 1 708 3545
>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Everyone hates slow websites. So do we.
>>>>>>> Make your web apps faster with AppDynamics
>>>>>>> Download AppDynamics Lite for free today:
>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>>> _______________________________________________
>>>>>>> Csound-devel mailing list
>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>
>>>>>>
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>>
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>
>>>>> Dr Victor Lazzarini
>>>>> Senior Lecturer
>>>>> Dept. of Music
>>>>> NUI Maynooth Ireland
>>>>> tel.: +353 1 708 3545
>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>> _______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Michael Gogins
>>>> Irreducible Productions
>>>> http://www.michael-gogins.com
>>>> Michael dot Gogins at gmail dot com
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>>
>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>
>>>>
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>
>>>
>>>
>>>
>>> --
>>> Michael Gogins
>>> Irreducible Productions
>>> http://www.michael-gogins.com
>>> Michael dot Gogins at gmail dot com
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>
>>>
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_feb
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
> ------------------------------------------------------------------------------
> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
> endpoint security space. For insight on selecting the right partner to
> tackle endpoint security challenges, access the full report.
> http://p.sf.net/sfu/symantec-dev2dev
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
http://p.sf.net/sfu/symantec-dev2dev
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net

global fsigs have always been supported.

Victor
On 5 Mar 2013, at 22:47, peiman khosravi wrote:

> I see, thanks for checking. Good to know it works there.
> 
> I suppose this particular csd can't really benefit from multicore and
> for the other stuff it would be easy to use one instrument per
> channel.
> 
> However, if global f-sigs were supported then we could break the jobs
> much more flexibly across different CPUs.
> 
> Thanks
> P
> 
> On 5 March 2013 22:38, Victor Lazzarini  wrote:
>> Also  a single instance of an instrument will not parallelise. Parallelism works at instrument instance level.
>> On 5 Mar 2013, at 21:26, peiman khosravi wrote:
>> 
>>> This could be related to the already reported bugs but I should
>>> probably mention it. With the current build that I have the previously
>>> attached csd doesn't reach and end with -j2 flag (but no errors).
>>> 
>>> Might be worth trying it on your system.
>>> 
>>> Best,
>>> Peiman
>>> 
>>> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>>>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>>>> -j 2
>>>> 
>>>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>>>> 
>>>> I will try this again. I probably had ksmps too low.
>>>> 
>>>> Thanks,
>>>> Mike
>>>> 
>>>> 
>>>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>>>> wrote:
>>>>> 
>>>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>>>> slower.  Turn all the debugging off and build release.
>>>>> Also there might be other gains to be had along the way, so comparing
>>>>> csound5 and csound6 is not going to be very meaningful at this point.
>>>>> This is an altogether different question to multicore testing.  In my
>>>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>>>> good platform for multicore testing.
>>>>> 
>>>>> Victor
>>>>> 
>>>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>>>> 
>>>>> How build the fastest version of Csound6 then?
>>>>> 
>>>>> 
>>>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>>>  wrote:
>>>>>> 
>>>>>> No, because there is quite a bit of printing etc. and the version you
>>>>>> have there is a debug one as well (so you are not comparing like for like).
>>>>>> The release version should be
>>>>>> faster.
>>>>>> 
>>>>>> Victor
>>>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>>>> 
>>>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>>>> With the attached csd I get:
>>>>>>> 
>>>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>>>> 0.358s
>>>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>>>> 0.712s
>>>>>>> 
>>>>>>> Strange, no?
>>>>>>> 
>>>>>>> Thanks
>>>>>>> Peiman
>>>>>>> 
>>>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>>>> wrote:
>>>>>>>> No, there is no special branch.
>>>>>>>> 
>>>>>>>> Victor
>>>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>>>> 
>>>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>>>> for
>>>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>>>> configuration I
>>>>>>>> need?
>>>>>>>> 
>>>>>>>> Regards,
>>>>>>>> Mike
>>>>>>>> 
>>>>>>>> 
>>>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>>>> 
>>>>>>>> wrote:
>>>>>>>>> 
>>>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>>>> the
>>>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>>>> Top/csound.c.
>>>>>>>>> 
>>>>>>>>> Victor
>>>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>>>> 
>>>>>>>>>> It's a great news about csound 6.
>>>>>>>>>> 
>>>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>>>> done
>>>>>>>>>> with
>>>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>>>> right
>>>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>>>> it
>>>>>>>>>> wastes
>>>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>>>> 
>>>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>>>> grained
>>>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>>>> for
>>>>>>>>>> thread
>>>>>>>>>> synchronization.
>>>>>>>>>> 
>>>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>>>> users
>>>>>>>>>> could
>>>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>>>> cache
>>>>>>>>>> utilisation leading better performance.
>>>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>>>> specific
>>>>>>>>>> CPU.
>>>>>>>>>> These features would be great in embedded environments.
>>>>>>>>>> 
>>>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>>>> 
>>>>>>>>>> Thanks.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> --
>>>>>>>>>> View this message in context:
>>>>>>>>>> 
>>>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>>> 
>>>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>>>> "unsubscribe
>>>>>>>>>> csound"
>>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> Dr Victor Lazzarini
>>>>>>>>> Senior Lecturer
>>>>>>>>> Dept. of Music
>>>>>>>>> NUI Maynooth Ireland
>>>>>>>>> tel.: +353 1 708 3545
>>>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>> 
>>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>>> "unsubscribe
>>>>>>>>> csound"
>>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> --
>>>>>>>> Michael Gogins
>>>>>>>> Irreducible Productions
>>>>>>>> http://www.michael-gogins.com
>>>>>>>> Michael dot Gogins at gmail dot com
>>>>>>>> 
>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>> Everyone hates slow websites. So do we.
>>>>>>>> Make your web apps faster with AppDynamics
>>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>> 
>>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>>>> Csound-devel mailing list
>>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Dr Victor Lazzarini
>>>>>>>> Senior Lecturer
>>>>>>>> Dept. of Music
>>>>>>>> NUI Maynooth Ireland
>>>>>>>> tel.: +353 1 708 3545
>>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>> Everyone hates slow websites. So do we.
>>>>>>>> Make your web apps faster with AppDynamics
>>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>>>> _______________________________________________
>>>>>>>> Csound-devel mailing list
>>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>> 
>>>>>>> 
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Everyone hates slow websites. So do we.
>>>>>>> Make your web apps faster with AppDynamics
>>>>>>> Download AppDynamics Lite for free today:
>>>>>>> 
>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>>> Csound-devel mailing list
>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>> 
>>>>>> Dr Victor Lazzarini
>>>>>> Senior Lecturer
>>>>>> Dept. of Music
>>>>>> NUI Maynooth Ireland
>>>>>> tel.: +353 1 708 3545
>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>> _______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> --
>>>>> Michael Gogins
>>>>> Irreducible Productions
>>>>> http://www.michael-gogins.com
>>>>> Michael dot Gogins at gmail dot com
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> 
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>> 
>>>>> 
>>>>> Dr Victor Lazzarini
>>>>> Senior Lecturer
>>>>> Dept. of Music
>>>>> NUI Maynooth Ireland
>>>>> tel.: +353 1 708 3545
>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>> _______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>> 
>>>> 
>>>> 
>>>> 
>>>> --
>>>> Michael Gogins
>>>> Irreducible Productions
>>>> http://www.michael-gogins.com
>>>> Michael dot Gogins at gmail dot com
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>> 
>>>> 
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> Everyone hates slow websites. So do we.
>>> Make your web apps faster with AppDynamics
>>> Download AppDynamics Lite for free today:
>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------------
>> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
>> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
>> endpoint security space. For insight on selecting the right partner to
>> tackle endpoint security challenges, access the full report.
>> http://p.sf.net/sfu/symantec-dev2dev
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
> 
> ------------------------------------------------------------------------------
> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
> endpoint security space. For insight on selecting the right partner to 
> tackle endpoint security challenges, access the full report. 
> http://p.sf.net/sfu/symantec-dev2dev
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
http://p.sf.net/sfu/symantec-dev2dev
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net

Ohh for some reason I thought they weren't! Great. This means I can
split my instruments that require more than one resynthesis into
several instruments. Should save some CPU.

Thanks!
Peiman

On 5 March 2013 22:51, Victor Lazzarini  wrote:
> global fsigs have always been supported.
>
> Victor
> On 5 Mar 2013, at 22:47, peiman khosravi wrote:
>
>> I see, thanks for checking. Good to know it works there.
>>
>> I suppose this particular csd can't really benefit from multicore and
>> for the other stuff it would be easy to use one instrument per
>> channel.
>>
>> However, if global f-sigs were supported then we could break the jobs
>> much more flexibly across different CPUs.
>>
>> Thanks
>> P
>>
>> On 5 March 2013 22:38, Victor Lazzarini  wrote:
>>> Also  a single instance of an instrument will not parallelise. Parallelism works at instrument instance level.
>>> On 5 Mar 2013, at 21:26, peiman khosravi wrote:
>>>
>>>> This could be related to the already reported bugs but I should
>>>> probably mention it. With the current build that I have the previously
>>>> attached csd doesn't reach and end with -j2 flag (but no errors).
>>>>
>>>> Might be worth trying it on your system.
>>>>
>>>> Best,
>>>> Peiman
>>>>
>>>> On 5 March 2013 21:13, Victor Lazzarini  wrote:
>>>>> With CloudStrata.csd for instance, it takes 69 s single-thread and 44 s with
>>>>> -j 2
>>>>>
>>>>> On 5 Mar 2013, at 21:06, Michael Gogins wrote:
>>>>>
>>>>> I will try this again. I probably had ksmps too low.
>>>>>
>>>>> Thanks,
>>>>> Mike
>>>>>
>>>>>
>>>>> On Tue, Mar 5, 2013 at 3:46 PM, Victor Lazzarini 
>>>>> wrote:
>>>>>>
>>>>>> The OSX binaries Peiman is trying has all the debug switched on, so it is
>>>>>> slower.  Turn all the debugging off and build release.
>>>>>> Also there might be other gains to be had along the way, so comparing
>>>>>> csound5 and csound6 is not going to be very meaningful at this point.
>>>>>> This is an altogether different question to multicore testing.  In my
>>>>>> oldish 2 core machine, I get definite speedups with -j2 on most things with
>>>>>> ksmps over 64. Lower ksmps are not so good, but then my machine is not a
>>>>>> good platform for multicore testing.
>>>>>>
>>>>>> Victor
>>>>>>
>>>>>> On 5 Mar 2013, at 20:37, Michael Gogins wrote:
>>>>>>
>>>>>> How build the fastest version of Csound6 then?
>>>>>>
>>>>>>
>>>>>> On Tue, Mar 5, 2013 at 3:23 PM, Victor Lazzarini
>>>>>>  wrote:
>>>>>>>
>>>>>>> No, because there is quite a bit of printing etc. and the version you
>>>>>>> have there is a debug one as well (so you are not comparing like for like).
>>>>>>> The release version should be
>>>>>>> faster.
>>>>>>>
>>>>>>> Victor
>>>>>>> On 5 Mar 2013, at 20:17, peiman khosravi wrote:
>>>>>>>
>>>>>>>> I just thought of comparing csound's performance between v5 and v6.
>>>>>>>> With the attached csd I get:
>>>>>>>>
>>>>>>>> Csound5---->Elapsed time at end of performance: real: 0.363s, CPU:
>>>>>>>> 0.358s
>>>>>>>> Csound6---->Elapsed time at end of performance: real: 0.724s, CPU:
>>>>>>>> 0.712s
>>>>>>>>
>>>>>>>> Strange, no?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>> Peiman
>>>>>>>>
>>>>>>>> On 5 March 2013 20:08, Victor Lazzarini 
>>>>>>>> wrote:
>>>>>>>>> No, there is no special branch.
>>>>>>>>>
>>>>>>>>> Victor
>>>>>>>>> On 5 Mar 2013, at 19:55, Michael Gogins wrote:
>>>>>>>>>
>>>>>>>>> I tried GIT head for Csound 6 a few days ago and didn't see speedups
>>>>>>>>> for
>>>>>>>>> multicore. Is it in a separate branch or is there some build
>>>>>>>>> configuration I
>>>>>>>>> need?
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Mike
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Tue, Mar 5, 2013 at 2:24 PM, Victor Lazzarini
>>>>>>>>> 
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>> The Csound 6 multicore implementation delivers substantial gains, and
>>>>>>>>>> the
>>>>>>>>>> way it has been designed, context-switching is not problematic. You
>>>>>>>>>> can check the code in csound6 GIT. The multicore code is in
>>>>>>>>>> Top/csound.c.
>>>>>>>>>>
>>>>>>>>>> Victor
>>>>>>>>>> On 5 Mar 2013, at 19:18, imaia wrote:
>>>>>>>>>>
>>>>>>>>>>> It's a great news about csound 6.
>>>>>>>>>>>
>>>>>>>>>>> Looking at 'Top/threads.c' in cs5,  I can see that everything is
>>>>>>>>>>> done
>>>>>>>>>>> with
>>>>>>>>>>> mutexes and condition variables.  I don't know if I'm looking at the
>>>>>>>>>>> right
>>>>>>>>>>> file, but the problem with mutexes is the context switch overhead,
>>>>>>>>>>> it
>>>>>>>>>>> wastes
>>>>>>>>>>> a lot of time to switch threads in this way.
>>>>>>>>>>>
>>>>>>>>>>> I've been working with  multi-thread implementations. In fine
>>>>>>>>>>> grained
>>>>>>>>>>> processing like synthesis I think spinlocks are better and faster
>>>>>>>>>>> for
>>>>>>>>>>> thread
>>>>>>>>>>> synchronization.
>>>>>>>>>>>
>>>>>>>>>>> Another good feature in cs6 could be "CPU affinity". In this way
>>>>>>>>>>> users
>>>>>>>>>>> could
>>>>>>>>>>> associate instruments to certain CPU set. It improves locality and
>>>>>>>>>>> cache
>>>>>>>>>>> utilisation leading better performance.
>>>>>>>>>>> System tasks like interrupts and syscalls(printf) could use a
>>>>>>>>>>> specific
>>>>>>>>>>> CPU.
>>>>>>>>>>> These features would be great in embedded environments.
>>>>>>>>>>>
>>>>>>>>>>> I'm tuning my implementation in this way, but it's a lot of work.
>>>>>>>>>>> I'm planning to write an article at the end to report my experience.
>>>>>>>>>>>
>>>>>>>>>>> Thanks.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> View this message in context:
>>>>>>>>>>>
>>>>>>>>>>> http://csound.1045644.n5.nabble.com/Design-for-a-multi-channel-Embedded-DSP-project-tp5720738p5720760.html
>>>>>>>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>>>>
>>>>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>>>>> "unsubscribe
>>>>>>>>>>> csound"
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Dr Victor Lazzarini
>>>>>>>>>> Senior Lecturer
>>>>>>>>>> Dept. of Music
>>>>>>>>>> NUI Maynooth Ireland
>>>>>>>>>> tel.: +353 1 708 3545
>>>>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>>>>>>
>>>>>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>>>>>>> Discussions of bugs and features can be posted here
>>>>>>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
>>>>>>>>>> "unsubscribe
>>>>>>>>>> csound"
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Michael Gogins
>>>>>>>>> Irreducible Productions
>>>>>>>>> http://www.michael-gogins.com
>>>>>>>>> Michael dot Gogins at gmail dot com
>>>>>>>>>
>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>> Everyone hates slow websites. So do we.
>>>>>>>>> Make your web apps faster with AppDynamics
>>>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>>>
>>>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>>>>> Csound-devel mailing list
>>>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Dr Victor Lazzarini
>>>>>>>>> Senior Lecturer
>>>>>>>>> Dept. of Music
>>>>>>>>> NUI Maynooth Ireland
>>>>>>>>> tel.: +353 1 708 3545
>>>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>> Everyone hates slow websites. So do we.
>>>>>>>>> Make your web apps faster with AppDynamics
>>>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>>>>> _______________________________________________
>>>>>>>>> Csound-devel mailing list
>>>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>>>
>>>>>>>>
>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>> Everyone hates slow websites. So do we.
>>>>>>>> Make your web apps faster with AppDynamics
>>>>>>>> Download AppDynamics Lite for free today:
>>>>>>>>
>>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>>>> Csound-devel mailing list
>>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>>
>>>>>>> Dr Victor Lazzarini
>>>>>>> Senior Lecturer
>>>>>>> Dept. of Music
>>>>>>> NUI Maynooth Ireland
>>>>>>> tel.: +353 1 708 3545
>>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Everyone hates slow websites. So do we.
>>>>>>> Make your web apps faster with AppDynamics
>>>>>>> Download AppDynamics Lite for free today:
>>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>>> _______________________________________________
>>>>>>> Csound-devel mailing list
>>>>>>> Csound-devel@lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Michael Gogins
>>>>>> Irreducible Productions
>>>>>> http://www.michael-gogins.com
>>>>>> Michael dot Gogins at gmail dot com
>>>>>>
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>>
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>
>>>>>>
>>>>>> Dr Victor Lazzarini
>>>>>> Senior Lecturer
>>>>>> Dept. of Music
>>>>>> NUI Maynooth Ireland
>>>>>> tel.: +353 1 708 3545
>>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------------------------------------------------------
>>>>>> Everyone hates slow websites. So do we.
>>>>>> Make your web apps faster with AppDynamics
>>>>>> Download AppDynamics Lite for free today:
>>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>>> _______________________________________________
>>>>>> Csound-devel mailing list
>>>>>> Csound-devel@lists.sourceforge.net
>>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Michael Gogins
>>>>> Irreducible Productions
>>>>> http://www.michael-gogins.com
>>>>> Michael dot Gogins at gmail dot com
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>
>>>>>
>>>>> Dr Victor Lazzarini
>>>>> Senior Lecturer
>>>>> Dept. of Music
>>>>> NUI Maynooth Ireland
>>>>> tel.: +353 1 708 3545
>>>>> Victor dot Lazzarini AT nuim dot ie
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Everyone hates slow websites. So do we.
>>>>> Make your web apps faster with AppDynamics
>>>>> Download AppDynamics Lite for free today:
>>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>>> _______________________________________________
>>>>> Csound-devel mailing list
>>>>> Csound-devel@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_d2d_feb
>>>> _______________________________________________
>>>> Csound-devel mailing list
>>>> Csound-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>>
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
>>> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
>>> endpoint security space. For insight on selecting the right partner to
>>> tackle endpoint security challenges, access the full report.
>>> http://p.sf.net/sfu/symantec-dev2dev
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>> ------------------------------------------------------------------------------
>> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
>> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
>> endpoint security space. For insight on selecting the right partner to
>> tackle endpoint security challenges, access the full report.
>> http://p.sf.net/sfu/symantec-dev2dev
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
> ------------------------------------------------------------------------------
> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
> endpoint security space. For insight on selecting the right partner to
> tackle endpoint security challenges, access the full report.
> http://p.sf.net/sfu/symantec-dev2dev
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester  
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the  
endpoint security space. For insight on selecting the right partner to 
tackle endpoint security challenges, access the full report. 
http://p.sf.net/sfu/symantec-dev2dev
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net