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On Oct 20, 2010, at 9:22 PM, Raymond Muno wrote:
> On 10/20/2010 7:59 PM, Ralph Castain wrote:
>> The error message seems to imply that mpirun itself didn't segfault, but that something else did. Is that segfault pid from mpirun?
>> This kind of problem usually is caused by mismatched builds - i.e., you compile against your new build, but you pick up the Myrinet build when you try to run because of path and ld_library_path issues. You might check to ensure you are running against what you built with.
> The PATH and LD_LIBRARY_PATH are set explicitly (through modules) on the frontend and each node. The PGI compiler and the OpenMPI I am trying to run is set for each.
Are you building OMPI with support for both MX and IB? If not and you only want MX support, try configuring OMPI using --disable-memory-manager (check configure for the exact option).
We have fixed this bug in the most recent 1.4.x and 1.5.x releases.