Intel oneAPI compiler not happy with AVX512

[Woozy Song]

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?

[m_b_metcalf]

Post by Woozy Song
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

[Lawrence D'Oliveiro]

Plea[s]e note that this forum is essentially dormant.

Like a volcano, “dormant” does not mean “extinct”.

[Steve Lionel]

Post by Woozy Song
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.