On which platform were you using the Intel compiler?

Regards,
Mike

----- Original Message ----- 
From: "David Akbari" 
To: "Developer discussions" 
Sent: Sunday, February 24, 2008 3:05 AM
Subject: Re: [Cs-dev] 5.08 Windows releases... closer to release


>I have been using the non-commercial version of Intel's optimized C
> and C++ compilers (icc and icpc respectively) to compile Csound for
> quite some time. Istvan mentioned he had been using it at some point
> as well.
>
> See the file in the CVS called "with_icc.txt". That file is just a
> plan .txt file of things I had to change in SConstruct to get it to
> work with the icc/icpc compilers and libraries. I put it in the CVS in
> case it was of interest to anyone else...
>
> I haven't done any formal benchmarks, but it is significantly faster
> especially in allocating GEN tables at performance initialization and
> I prefer it for my live performance/non-GUI Csound work.
>
>
> -David
>
> On Sat, Feb 23, 2008 at 10:01 PM, Michael Gogins  
> wrote:
>> There are reports online that the Intel compiler can produce numerical 
>> code
>>  that runs SEVERAL TIMES FASTER than the results below. This is thanks to
>>  superior vectorization of loops. In that case, the Csound macros for
>>  arithmetic on asigs could be replaced with Intel performance library 
>> calls
>>  (these are essentially vectorized and parallelized versions of the BLAS
>>  routines) for a further speedup.
>>
>>  It is possible this could put Csound into competition with commercial 
>> VST
>>  instrument plugins for speed. One presumes that commercial plugins are
>>  already compiled with the Intel compiler and performance libraries.
>>
>>  I can't afford to buy the Intel compiler, but perhaps we could take up a
>>  collection or get a grant somewhere?... There is no problem getting the
>>  Intel compiler for free on Linux, but I do not recall the details of
>>  licensing.
>>
>>  Regards,
>>  Mike
>>
>>
>>
>>  ----- Original Message -----
>>  From: "Michael Gogins" 
>>  To: "Developer discussions" 
>>  Sent: Saturday, February 23, 2008 10:44 PM
>>  Subject: [Cs-dev] 5.08 Windows releases... closer to release
>>
>>
>>  > Status:
>>  >
>>  > Bugs caushing Csound GUIs to crash on exit appear to be fixed.
>>  >
>>  > Everything but OSC and csoundvst~ builds on MSVC 2008.
>>  >
>>  > Everything but csoundvst~ and the PortMidi module builds on MinGW with 
>> GCC
>>  > 4.2.1.
>>  >
>>  > Python works, GUIs work. Still need to test CsoundVST, Lua, Lisp, 
>> Java.
>>  >
>>  > Windows installers are fixed (I think -- needs feedback, but not 
>> uploaded
>>  > yet).
>>  >
>>  > Very approximate performance comparison:
>>  >
>>  > Trapped in Convert rendering to a soundfile:
>>  >
>>  > COMPILER         OPTIMIZATIONS          SPEED
>>  > GCC 4.2.1        -03 mtune=prescott     7.9 seconds
>>  > MSVC 2008        /O2 /fp:fast           6.8 seconds
>>  >
>>  > The rendering speed with GCC 4.2.1 is significantly faster than any
>>  > Windows
>>  > build of the past. The rendering speed with MSVC 2008, in turn, is
>>  > significantly faster than GCC 4.2.1.
>>  >
>>  > I will try to run the OSC opcodes built with MinGW in the Csound built
>>  > with
>>  > MSVC. If that works, I will release the MSVC build. If that does not 
>> work,
>>  > I
>>  > will release the MinGW build because it contains the OSC opcodes.
>>  >
>>  > I also may try some alternative optimizations on the MinGW build.
>>  >
>>  > Regards,
>>  > Mike
>>  >
>>  >
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