It looks like one of your application processes is dying because of some error that is likely unrelated to MPI. You'll need to attach a debugger to the processes to figure out what's going on. -- Pavan On 06/27/2013 10:29 PM, Syed. Jahanzeb Maqbool Hashmi wrote:

again that same error: Fatal error in PMPI_Wait: A process has failed, error stack: PMPI_Wait(180)............: MPI_Wait(request=0xbebb9a1c, status=0xbebb99f0) failed MPIR_Wait_impl(77)........: dequeue_and_set_error(888): Communication error with rank 4

-- Pavan Balaji http://www.mcs.anl.gov/~balaji