Hi,

May be jumping the gun here... But are there any plans to make csound ios
64bit, now that apple has announced the 64 bit chip in the 5s? More
computing power would be great.

On the other hand, I hear that there's no use for 64 bit unless the device
has more than 4gig of ram. Is this true?

Thanks.



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There should not be major problems in moving to 64bit when the time is right, as Csound in other platforms has been on
64bit OSs for a while now.

Victor
On 17 Sep 2013, at 16:55, lppier wrote:

> Hi,
> 
> May be jumping the gun here... But are there any plans to make csound ios
> 64bit, now that apple has announced the 64 bit chip in the 5s? More
> computing power would be great.
> 
> On the other hand, I hear that there's no use for 64 bit unless the device
> has more than 4gig of ram. Is this true?
> 
> Thanks.
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/csound-ios-64-bit-tp5727647.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> 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

Csound would benefit from being 64 bit, definitely. 

I suspect Csound would run faster, though one can't be sure without trying.

The big plus would be vast memory. This is needed for large function tables, long delay lines, but above all for large sample banks.

Film composers routinely run 64 bit samplers.  The big names have rooms or closets full of racks of computers loaded with samples.

In computing, after all, more and bigger is ALWAYS better. 

One always find something to do with the power.

The commercial music software world is 2/3 through a move to double precision samples,  192 KHz sampling rate, multi core, and 64 bit architecture. We've managed to keep up so far, let's not slip now.

Regards,
Mike

This does bring up some interesting things.  Right now we use float
build on iOS and Android.  I suspect in the future it would be
feasible to do double builds.  On the other hand, because the majority
of devices will still be 32-bit, it may be some time before we should
start promoting a double build.

For the Csound for iOS SDK, we'll have to consider:

1. Do we provide a double build in addition to float build?
2. How should we export fat binaries for libcsound.a and libsndfile.a?

for #2, we already do fat binaries for i386, armv7, armv7s.  I don't
know if it will be as simple as adding armv8 (if that's the cpu for
the 5S) and updating the build scripts.  Hopefully that'll be it as
that'd be relatively simple.

For application developers, I took a look and it seems to me that if
you target iOS7, you *need* to have it support both 32 and 64-bit.
That means we'll probably need to get #2 done sooner rather than
later.  App developers can continue to target iOS 6.1 and use the
existing Csound for iOS SDK. As far as I understand, these will run on
the 5C in 32-bit mode.

Apple's developer site has betas for iOS7 and XCode 5.  It'd be
simpler to wait until XCode is released for general availability, but
I understand there may be iOS developers here that would want to have
iOS7 support right from the start.  If it's an issue that interests
you, please file a ticket and assign to me (kunstmusik) on the Csound
Sourceforge site.  I'll download and take a look at updating the build
system when I have a chance.





On Tue, Sep 17, 2013 at 12:15 PM, Victor Lazzarini
 wrote:
> There should not be major problems in moving to 64bit when the time is right, as Csound in other platforms has been on
> 64bit OSs for a while now.
>
> Victor
> On 17 Sep 2013, at 16:55, lppier wrote:
>
>> Hi,
>>
>> May be jumping the gun here... But are there any plans to make csound ios
>> 64bit, now that apple has announced the 64 bit chip in the 5s? More
>> computing power would be great.
>>
>> On the other hand, I hear that there's no use for 64 bit unless the device
>> has more than 4gig of ram. Is this true?
>>
>> Thanks.
>>
>>
>>
>> --
>> View this message in context: http://csound.1045644.n5.nabble.com/csound-ios-64-bit-tp5727647.html
>> Sent from the Csound - General mailing list archive at Nabble.com.
>>
>>
>> Send bugs reports to the Sourceforge bug trackers
>> csound6:
>>            https://sourceforge.net/p/csound/tickets/
>> csound5:
>>            https://sourceforge.net/p/csound/bugs/
>> 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 trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>

Hi Steven, 

I might have gotten that wrong.  I just re-read:

https://developer.apple.com/library/ios/documentation/General/Conceptual/CocoaTouch64BitGuide/Introduction/Introduction.html

And it seems like it's a strong encouragement to use iOS7 and to build
32/64-bit.  I don't see the a requirement to build 64-bit though.

On Wed, Sep 18, 2013 at 9:20 PM, lppier  wrote:
> Hi Steven,
>
> Curious… where did you read this ?
>
> For application developers, I took a look and it seems to me that if
> you target iOS7, you *need* to have it support both 32 and 64-bit.
>
>
> One reason for this is the inter-app audio that is only supported by iOS7.
> But I've heard it's buggy as of now and not ready.
>
> I understand there may be iOS developers here that would want to have
> iOS7 support right from the start.  If it's an issue that interests
> you, please file a ticket and assign to me (kunstmusik) on the Csound
> Sourceforge site.
>
>
>
>
>
>
> On Tue, Sep 17, 2013 at 12:15 PM, Victor Lazzarini
> < target="_top" rel="nofollow" link="external">[hidden email]> wrote:
>
>> There should not be major problems in moving to 64bit when the time is
>> right, as Csound in other platforms has been on
>> 64bit OSs for a while now.
>>
>> Victor
>> On 17 Sep 2013, at 16:55, lppier wrote:
>>
>>> Hi,
>>>
>>> May be jumping the gun here... But are there any plans to make csound ios
>>> 64bit, now that apple has announced the 64 bit chip in the 5s? More
>>> computing power would be great.
>>>
>>> On the other hand, I hear that there's no use for 64 bit unless the
>>> device
>>> has more than 4gig of ram. Is this true?
>>>
>>> Thanks.
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://csound.1045644.n5.nabble.com/csound-ios-64-bit-tp5727647.html
>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>
>>>
>>> Send bugs reports to the Sourceforge bug trackers
>>> csound6:
>>>            https://sourceforge.net/p/csound/tickets/
>>> csound5:
>>>            https://sourceforge.net/p/csound/bugs/
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email >> href="x-msg://42/user/SendEmail.jtp?type=node&node=5727650&i=1"
>>> target="_top" rel="nofollow" link="external">[hidden email] 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 trackers
>> csound6:
>>             https://sourceforge.net/p/csound/tickets/
>> csound5:
>>             https://sourceforge.net/p/csound/bugs/
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email > href="x-msg://42/user/SendEmail.jtp?type=node&node=5727650&i=2"
>> target="_top" rel="nofollow" link="external">[hidden email] with body
>> "unsubscribe csound"
>>
>>
>
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email  href="x-msg://42/user/SendEmail.jtp?type=node&node=5727650&i=3"
> target="_top" rel="nofollow" link="external">[hidden email] with body
> "unsubscribe csound"
>
>
>
>
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