MPI singleton crash

[amirshehataornl]

System Information
Frontier

OMPI-X Release Version
ompix-a1

Short description of error
Crash when running a singleton

Exact steps for others to reproduce the error

• compile with ompix-a1 release
• run application as a singleton, not from an allocation using mpirun

Other Details

#0  0x00007fffec0addd7 in __strncasecmp_l_avx () from /lib64/libc.so.6
#1  0x00007fffcb3012f8 in pmix_hwloc_load_topology ()
   from /sw/frontier/ums/ums024/cce/15.0.0/install/openmpi-v5.0.0rc12+11775-ompix-a1-20230627/lib/libpmix.so.2
#2  0x00007fffcb321653 in _loadtp () from /sw/frontier/ums/ums024/cce/15.0.0/install/openmpi-v5.0.0rc12+11775-ompix-a1-20230627/lib/libpmix.so.2
#3  0x00007fffd40353b9 in event_process_active_single_queue (base=0x5a4370, activeq=0x5a47c0, max_to_process=2147483647, endtime=0x0) at event.c:1691
#4  0x00007fffd40316ec in event_process_active (base=0x5a4370) at event.c:1786
#5  event_base_loop (base=0x5a4370, flags=1) at event.c:2006
#6  0x00007fffcb35ef21 in progress_engine ()
   from /sw/frontier/ums/ums024/cce/15.0.0/install/openmpi-v5.0.0rc12+11775-ompix-a1-20230627/lib/libpmix.so.2
#7  0x00007fffeccbd6ea in start_thread () from /lib64/libpthread.so.0
#8  0x00007fffec049a6f in clone () from /lib64/libc.so.6