On 07/23/2013 09:54 AM, Jeff Squyres (jsquyres) wrote: > > I don't know if Fedora RPMs include -g in their builds, or if Fedora > includes a debuginfo RPM that you could install such that you can attach > a debugger and be able to dig into OMPI's internals yourself. >
There is a debuginfo package. Since I removed all of fedora's openmpi packages and installed from source into /opt/openmpi-1.6.5 and /opt/openmpi-1.6.5_hwloc-1.4.3 to narrow down on this problem, I now have to re-install the rpms with yum. sudo yum install openmpi openmpi-devel openmpi-debuginfo These don't put anything into my PATH or LD_LIBRARY_PATH so I have to : module load mpi/openmpi-x86_64 I compiled my simple program with : mpicc -g -o mpi_simple mpi_simple.c The program links to fedora's copies of the libraries of interest : mpirun -n 1 ldd mpi_simple | grep hwloc libhwloc.so.5 => /lib64/libhwloc.so.5 (0x0000003c57600000) mpirun -n 1 ldd mpi_simple | grep mpi libmpi.so.1 => /usr/lib64/openmpi/lib/libmpi.so.1 (0x00007f7207e29000) I started the debugger with : mpirun -n 1 gdb mpi_simple When run in the debugger I got the error I described. I reran and in gdb did : set breakpoint pending on break util/nidmap.c:146 run step took me into 'opal_dss_unpack' Then I did 'next' until I got passed 'opal_dss_unpack_buffer' which returned the -1 we see outside.
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