That's very odd, indeed -- it's listed as being inside MPI_INIT, but we don't get any further details from there. :-\
Any chance you could try upgrading to OMPI 1.4.5 and/or 1.5.5? On Apr 24, 2012, at 1:57 PM, Jeffrey A Cummings wrote: > I've been having an intermittent failure during MPI initialization (v 1.4.3) > for several months. It comes and goes as I make changes to my application, > that is changes unrelated to MPI calls. Even when I have a version of my app > which shows the problem, it doesn't happen on every submittal. This is a > representative stack trace: > > [mtcompute-6-6:05845] *** Process received signal *** > [mtcompute-6-6:05845] Signal: Segmentation fault (11) > [mtcompute-6-6:05845] Signal code: Address not mapped (1) > [mtcompute-6-6:05845] Failing at address: 0x2ac352e0bd80 > [mtcompute-6-6:05845] [ 0] /lib64/libpthread.so.0 [0x314ee0eb10] > [mtcompute-6-6:05845] [ 1] /opt/openmpi/lib/libmpi.so.0 [0x2b2b3d42fa70] > [mtcompute-6-6:05845] [ 2] > /opt/openmpi/lib/libopen-pal.so.0(opal_progress+0x5a) [0x2b2b3fa694ea] > [mtcompute-6-6:05845] [ 3] /opt/openmpi/lib/libopen-rte.so.0 [0x2b2b3f80913c] > [mtcompute-6-6:05845] [ 4] /opt/openmpi/lib/libmpi.so.0 [0x2b2b3d3f160c] > [mtcompute-6-6:05845] [ 5] /opt/openmpi/lib/libmpi.so.0(MPI_Init+0xf0) > [0x2b2b3d40eb00] > [mtcompute-6-6:05845] [ 6] /home/cummings/DART/DARTHome/bin/linux/DebrisProp > [0x418610] > [mtcompute-6-6:05845] [ 7] /lib64/libc.so.6(__libc_start_main+0xf4) > [0x31df41d994] > [mtcompute-6-6:05845] [ 8] /home/cummings/DART/DARTHome/bin/linux/DebrisProp > [0x417992] > [mtcompute-6-6:05845] *** End of error message *** > -------------------------------------------------------------------------- > mpirun noticed that process rank 1 with PID 5845 on node mtcompute-6-6.local > exited on signal 11 (Segmentation fault). > -------------------------------------------------------------------------- > > Any suggestions would be welcome. > > - Jeff Cummings_______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/