Package: libpsm2-2 Version: 11.2.185-2.1 applications using openMPI which in turn uses libpsm2-2 fail with "SIGILL, Illegal instruction".
The reason is that libpsm2 detects support for AVX instructions itself. Hence, a package build on a system with newer processors will not run on older hardware. The following example is from Intel(R) Xeon(R) CPU X5670 (Westmere): Thread 1 "DAMASK_test" received signal SIGILL, Illegal instruction. 0x00000897b3c84251 in ?? () from /usr/lib/x86_64-linux-gnu/libpsm2.so.2 (gdb) backtrace #0 0x00000897b3c84251 in ?? () from /usr/lib/x86_64-linux- gnu/libpsm2.so.2 #1 0x00000897bc43c7cf in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fff5b725e28, env=env@entry=0x7fff5b725e38) at ./elf/dl-init.c:74 #2 0x00000897bc43c8e4 in call_init (l=<optimized out>, argc=<optimized out>, argv=<optimized out>, env=<optimized out>) at ./elf/dl-init.c:120 #3 _dl_init (main_map=0x897bc4742e0, argc=1, argv=0x7fff5b725e28, env=0x7fff5b725e38) at ./elf/dl-init.c:121 #4 0x00000897bc4593a0 in _dl_start_user () from /lib64/ld-linux-x86- 64.so.2 #5 0x0000000000000001 in ?? () #6 0x00007fff5b7271ee in ?? () #7 0x0000000000000000 in ?? The AVX detection is done in buildflags.mak There is a bug report for the Ubuntu package, which is a rebuild of the Debian package https://bugs.launchpad.net/ubuntu/+source/libpsm2/+bug/2111536 Note: I've encountered this on Ubuntu 26.04 -- KU Leuven Department of Computer Science Department of Materials Engineering Celestijnenlaan 200a 3001 Leuven, Belgium
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