AVX-512?
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Message boards : Number crunching : AVX-512?

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zombie67 [MM]
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Message 6559 - Posted: 6 Jun 2020, 2:57:54 UTC

Do the CPU apps use AVX-512 if available?
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dannyridel
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Message 6560 - Posted: 6 Jun 2020, 3:30:00 UTC - in response to Message 6559.

Do the CPU apps use AVX-512 if available?


SRBase uses LLR, so I think it does.

zombie67 [MM]
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Message 6561 - Posted: 6 Jun 2020, 5:18:29 UTC
Last modified: 6 Jun 2020, 5:21:20 UTC

I am not so sure. Here is the result of a machine with AVX-512s:

Using zero-padded FMA3 FFT length 560K, Pass1=448, Pass2=1280, 5 threads, a = 3


FMA3 is not AVX-512.
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dannyridel
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Message 6562 - Posted: 6 Jun 2020, 5:50:09 UTC - in response to Message 6561.

I am not so sure. Here is the result of a machine with AVX-512s:

Using zero-padded FMA3 FFT length 560K, Pass1=448, Pass2=1280, 5 threads, a = 3


FMA3 is not AVX-512.


Hmm maybe check in cmdline which version it is, if it's not 3.8.23 then probably use app_info on it?

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Message 6563 - Posted: 6 Jun 2020, 6:35:51 UTC - in response to Message 6559.
Last modified: 6 Jun 2020, 6:37:49 UTC

Do the CPU apps use AVX-512 if available?


Jean is working on a new version where you have a switch to enable or disable it. In the current version there is no AVX512 support.


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Message boards : Number crunching : AVX-512?


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