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Published 20 hours ago • verified publisher icon robbmcleod

AVX512 support

Open robbmcleod opened this issue 7 years ago • 3 comments

Pretty much self-explanatory, since I have a CPU with AVX512 support I should verify the performance of the library to use those instructions. Probably something to do over the Christmas break.

robbmcleod avatar Dec 15 '17 18:12 robbmcleod

I haven't been able to get AVX512 to work with either MSVC2017 or GCC6 yet.

For AVX2, we have the problem that cpuinfo.py doesn't detect it. So currently I simply have a commented out line in setup.py. It would be preferrable to write something new, since cpuinfo.py is such a jumbled mess. I'm inclined to write a Python wrapper for:

https://github.com/Mysticial/FeatureDetector

It would need also the ability to detector CPU count, and ideally distinguish virtual from physical cores, and determine the L1/L2/L3 cache sizes.

robbmcleod avatar Dec 29 '17 22:12 robbmcleod

I had a bit of trouble compiling it with GCC7: Auburns/FastNoiseSIMD#24

QuLogic avatar Jan 04 '18 10:01 QuLogic

Well I finally managed to figure out how to get it compiling with AVX2 with GCC6 on Travis:

https://travis-ci.org/robbmcleod/pyfastnoisesimd/builds/325733401?utm_source=github_status&utm_medium=notification

And I can compile with GCC7 and AVX512 support on my machine, so I think the situation is fine if documented.

robbmcleod avatar Jan 06 '18 15:01 robbmcleod