Re: Intel oneAPI compiler not happy with AVX512

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.
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Steve Lionel
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