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Intel oneAPI compiler not happy with AVX512

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From: suzyw...@outlook.com (Woozy Song)
Newsgroups: comp.lang.fortran
Subject: Intel oneAPI compiler not happy with AVX512
Date: Fri, 12 Apr 2024 17:58:38 +0800
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by: Woozy Song - Fri, 12 Apr 2024 09:58 UTC

I have a package that contains nearly 500 f90 files. I noticed that in
the makefile, it was using -ax (automatic dispatch ) up to AVX2. I added
COMMON-AVX512 to the options. One thing I noticed was that compilation
is now slower. It seemed to stop for 30 seconds when it hit one
particular subroutine. But main problem was that after a few hundred
files, it aborted with unexpected internal error. The offending file
wasn't doing anything exotic, mostly a linear regression.
This is 2024.1 version of the compiler, pretty much the latest.
Has anybody else compiled for AVX512?

Re: Intel oneAPI compiler not happy with AVX512

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From: michaelm...@compuserve.com (m_b_metcalf)

by: m_b_metcalf - Sun, 21 Apr 2024 09:55 UTC

Le 12/04/2024 à 11:58, Woozy Song a écrit :
> I have a package that contains nearly 500 f90 files. I noticed that in
> the makefile, it was using -ax (automatic dispatch ) up to AVX2. I added
> COMMON-AVX512 to the options. One thing I noticed was that compilation
> is now slower. It seemed to stop for 30 seconds when it hit one
> particular subroutine. But main problem was that after a few hundred
> files, it aborted with unexpected internal error. The offending file
> wasn't doing anything exotic, mostly a linear regression.
> This is 2024.1 version of the compiler, pretty much the latest.
> Has anybody else compiled for AVX512?

Pleae note that this forum is essentially dormant. I recommended that you
switch to Fortran Discourse, at
https://fortran-lang.discourse.group/latest

Regards,

Mike Metcalf

Re: Intel oneAPI compiler not happy with AVX512

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From: ldo...@nz.invalid (Lawrence D'Oliveiro)
Newsgroups: comp.lang.fortran
Subject: Re: Intel oneAPI compiler not happy with AVX512
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by: Lawrence D'Oliv - Sun, 21 Apr 2024 23:18 UTC

Re: Intel oneAPI compiler not happy with AVX512

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From: ste...@seesignature.invalid (Steve Lionel)
Newsgroups: comp.lang.fortran
Subject: Re: Intel oneAPI compiler not happy with AVX512
Date: Mon, 29 Apr 2024 16:49:25 -0400
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by: Steve Lionel - Mon, 29 Apr 2024 20:49 UTC

On 4/12/2024 5:58 AM, Woozy Song wrote:
> I have a package that contains nearly 500 f90 files. I noticed that in
> the makefile, it was using -ax (automatic dispatch ) up to AVX2. I added
> COMMON-AVX512 to the options. One thing I noticed was that compilation
> is now slower. It seemed to stop for 30 seconds when it hit one
> particular subroutine. But main problem was that after a few hundred
> files, it aborted with unexpected internal error. The offending file
> wasn't doing anything exotic, mostly a linear regression.
> This is 2024.1 version of the compiler, pretty much the latest.
> Has anybody else compiled for AVX512?

Please report this in
https://community.intel.com/t5/Intel-Fortran-Compiler/bd-p/fortran-compiler
and provide a reproducer. Internal Compiler Error is always a compiler
bug. But before you do, try ifx instead of ifort, as it has an entirely
different code generator and is the path forward for Intel. Bugs that
are ifort-only are unlikely to get fixed.
--
Steve Lionel
ISO/IEC JTC1/SC22/WG5 (Fortran) Convenor
Retired Intel Fortran developer/support
Email: firstname at firstnamelastname dot com
Twitter: @DoctorFortran
LinkedIn: https://www.linkedin.com/in/stevelionel
Blog: https://stevelionel.com/drfortran
WG5: https://wg5-fortran.org

The light of a hundred stars does not equal the light of the moon.

devel / comp.lang.fortran / Intel oneAPI compiler not happy with AVX512

Subject	Author
Intel oneAPI compiler not happy with AVX512	Woozy Song
Re: Intel oneAPI compiler not happy with AVX512	m_b_metcalf
Re: Intel oneAPI compiler not happy with AVX512	Lawrence D'Oliveiro
Re: Intel oneAPI compiler not happy with AVX512	Steve Lionel