GNU bug report logs - #60082
openblas FTBFS in KVM with default CPU

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Tril <tril <at> metapipe.net>
Cc: 60082-done <at> debbugs.gnu.org
Subject: bug#60082: openblas FTBFS in KVM with default CPU
Date: Sat, 09 Mar 2024 20:02:33 -0500

Hi,

<tril <at> metapipe.net> writes:

> FTBFS = "Fails To Build From Source"
>
> guix package --no-substitutes -i openblas
>
> resulted in the error below on Guix System running on a KVM in Proxmox
> VE using the default CPU called "kvm64".
>
> ---
> OPENBLAS_NUM_THREADS=1 OMP_NUM_THREADS=1 ./sblat3 < ./sblat3.dat
>
> Program received signal SIGILL: Illegal instruction.
>
> Backtrace for this error:
> #0  0x7ffff7d2fc1a
> #1  0x7ffff7d2ee45
> #2  0x7ffff7a2209f
> #3  0x186ac04
> bash: line 1: 25848 Illegal instruction OPENBLAS_NUM_THREADS=1
> OMP_NUM_THREADS=1 ./sblat3 < ./sblat3.dat
>
> make[1]: *** [Makefile:167: level3] Error 132
> ---
>
> I shutdown the VM and changed the CPU type to "host" (which provides the full
> instruction set of my CPU to the VM) and was able to build successfully
> using the same command.
>
> openblas 0.3.20 out
> /gnu/store/xghpgl3fnr603z16vg7hldmpxygriqm2-openblas-0.3.20

Thanks for the report.  That's probably due to some limitation in QEMU.
It'd be best to report it there -- it's outside of the scope of Guix,
although you could offer a Guix-based reproducer in your upstream
report.

Closing.

-- 
Thanks,
Maxim

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