openblas FTBFS in KVM with default CPU

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

tags 60082 notabug

close 60082

quit

Hi,

<tril@metapipe.net> writes:

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