* SIMD question
@ 2006-02-22 18:20 Maciej Hrebien
0 siblings, 0 replies; only message in thread
From: Maciej Hrebien @ 2006-02-22 18:20 UTC (permalink / raw)
To: linux-assembly
Hello everybody!
I have quite big commercial software and the producer tells me that they
did heavy SIMD optimisations to get maximum speed in solving a given
problem. Of course i don't have the source code but the soft runs in
GNU/Linux enviroment (x86 architecture).
I did some experiments on smaller problems and i suspect that this
procuder's SIMD optimisations is a one big lie - the code can run much
faster. There are some SIMD instructions when i disassemble this
~250-meg binaries but analysing it is a quite frustrating job.
My question is: is there a way (without touching the kernel as yet) to
trace in a given period of time the CPU so that i will be noticed when
SIMD instructions are being executed? Or maybe setting debugging traps
in all SIMD occuring places is the only way?
PS Thanks to Konstantin we have new asmutils :) Feel free, you - the
reader of this message, to improve my parts of code which were written
many many days ago so even beautifullization is warmly welcome ;)
Best regards,
Maciek
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2006-02-22 18:20 SIMD question Maciej Hrebien
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