I have a distributed program running on 400+ nodes and using OpenMPI. I
have run the same binary with nearly the same setup successfully previously.
However in my last two runs the program seems to be getting stuck after a
while before it completes. The stack trace at the time it gets stuck is as
#0 0x00002ad0000c00df in poll () from /lib/libc.so.6
#1 0x00002acfffa49c27 in opal_poll_dispatch () from
#2 0x00002acfffa47add in opal_event_base_loop () from
#3 0x00002acfffa43203 in opal_progress () from /usr/lib64/libopen-pal.so.0
#4 0x00002acfff78b315 in ompi_request_test_some () from
#5 0x00002acfff7adf7a in PMPI_Testsome () from /usr/lib64/libmpi.so.0
I checked all the nodes and they seem to be up and doing fine. Any
suggestions/hints on what might be happening here would help greatly. Thanks
I am using OpenMPI 1.2.7 on gentoo linux.