Hello,

Does someone have idea why "slurmd -C" crashes when it unloads gpu_nrt.so with latest NVIDIA drivers (570 and 575)? We checked, there is no crash in cuda at the moment and gpu_nvml.so works fine, all nvml calls finish successfully, dlclose on gpu_nvml.so works fine. The crash does not depend whether real GPUs present or not.

Steps to reproduce:

Stack trace:

                #0  0x0000155555544b2a strlen (ld-linux-x86-64.so.2 + 0x28b2a)

                #1  0x000015555551fc08 __GI__dl_exception_create (ld-linux-x86-64.so.2 + 0x3c08)

                #2  0x000015555551d298 __GI__dl_signal_error (ld-linux-x86-64.so.2 + 0x1298)

                #3  0x000015555551e81d _dl_close (ld-linux-x86-64.so.2 + 0x281d)

                #4  0x000015555551d51c __GI__dl_catch_exception (ld-linux-x86-64.so.2 + 0x151c)

                #5  0x000015555551d669 _dl_catch_error (ld-linux-x86-64.so.2 + 0x1669)

                #6  0x0000155554e97c73 _dlerror_run (libc.so.6 + 0x97c73)

                #7  0x0000155554e979a6 __dlclose (libc.so.6 + 0x979a6)

                #8  0x0000155555388a25 gpu_plugin_fini (libslurmfull.so + 0x188a25)

                #9  0x000015555538f2ef gres_get_autodetected_gpus (libslurmfull.so + 0x18f2ef)

                #10 0x0000555555564828 _print_config (slurmd + 0x10828)

                #11 0x0000155554e2a1ca __libc_start_call_main (libc.so.6 + 0x2a1ca)

                #12 0x0000155554e2a28b __libc_start_main_impl (libc.so.6 + 0x2a28b)

                #13 0x000055555555fc75 _start (slurmd + 0xbc75)    

I don't really think the problem is in gpu_nrt itself, seems the problem is in memory corruption somewhere else, but I am not sure. The issue is reproduced constantly. A

Best regards,

Taras