I got this strange crash on master this night running nv/mpix_test :
Signal: Segmentation fault (11)
Signal code: Address not mapped (1)
Failing at address: 0x50
[ 0] /lib64/libpthread.so.0(+0xf710)[0x7f9f19a80710]
[ 1]
/ivylogin/home/sjeaugey/tests/mtt/scratches/mtt-scratch-4/installs/eGXW/install/lib/libopen-rte.so.0(orte_util_compare_name_fields+0x81)[0x7f9f1a88f6d7]
[ 2]
/ivylogin/home/sjeaugey/tests/mtt/scratches/mtt-scratch-4/installs/eGXW/install/lib/openmpi/mca_iof_hnp.so(orte_iof_hnp_read_local_handler+0x247)[0x7f9f1109b4ab]
[ 3]
/ivylogin/home/sjeaugey/tests/mtt/scratches/mtt-scratch-4/installs/eGXW/install/lib/libopen-pal.so.0(opal_libevent2022_event_base_loop+0xbf1)[0x7f9f1a5b68f1]
[ 4] mpirun[0x405649][drossetti-ivy4:31651] [ 5] mpirun[0x403a48]
[ 6] /lib64/libc.so.6(__libc_start_main+0xfd)[0x7f9f196fbd1d]
[ 7] mpirun[0x4038e9]
*** End of error message ***
This test is not even calling MPI_Init/Finalize, only
MPIX_Query_cuda_support. So it is really an ORTE race condition, and the
problem is hard to reproduce. It takes sometimes more than 50 runs with
random sleep between runs to see the problem.
I don't even know if we want to fix that -- what do you think ?
Sylvain
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