avx512 anyone? (Skylake-X or later)

[Volker Braun]

Has anybody except for John Palmieri tested the latest Sage beta releases on a machine with avx512 support? I.e. at least Core i7 7820X (the X being important):

https://en.wikipedia.org/wiki/AVX-512#CPUs_with_AVX-512

Trying to get some data for https://trac.sagemath.org/ticket/27961

[Clement Pernet]

Hi,

I just successfully compiled and tested upstream develop (at 8df690fd2a4e7a0c36e7dbc05c22d4d977217065 ) on a Intel(R) Xeon(R) Gold 6126 CPU @ 2.60GHz server with AVX512.

All tests passed.

Is there any specific compilation to test for #27961 ?

I'll give a look at the ticket later on.

As a side note, OpenBLAS dgemm is still disapointing in terms of performance on this machine, which make me think that they disabled some AVX512 specific kernels.

Clément

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[Volker Braun]

Thanks! AVX512 dgemm is indeed currently disabled on OpenBLAS.

On Saturday, June 15, 2019 at 9:15:19 PM UTC+2, Clement Pernet wrote:

Hi,

I just successfully compiled and tested upstream develop (at 8df690fd2a4e7a0c36e7dbc05c22d4d977217065 ) on a Intel(R) Xeon(R) Gold 6126 CPU @ 2.60GHz server with AVX512.

All tests passed.

Is there any specific compilation to test for #27961 ?

I'll give a look at the ticket later on.

As a side note, OpenBLAS dgemm is still disapointing in terms of performance on this machine, which make me think that they disabled some AVX512 specific kernels.

Clément

Le sam. 15 juin 2019 à 10:50, Volker Braun <vbrau...@gmail.com> a écrit :

Has anybody except for John Palmieri tested the latest Sage beta releases on a machine with avx512 support? I.e. at least Core i7 7820X (the X being important):

https://en.wikipedia.org/wiki/AVX-512#CPUs_with_AVX-512

Trying to get some data for https://trac.sagemath.org/ticket/27961

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