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Subject: [OMPI users] MPI_Alltoallv function crashes when np > 100
From: ÃÏÏܾü (xjun.meng_at_[hidden])
Date: 2011-04-25 03:51:36


Dear all,

As I mentioned, when I mpiruned an application with the parameter "np =
150(or bigger)", the application who used the MPI_Alltoallv function would
carsh. The problem would recur no matter how many nodes we used.

The edition of OpenMPI: 1.4.1 or 1.4.3
The OS: linux redhat 2.6.32

BTW, my nodes had enough memory to run the application, and the MPI_Alltoall
function worked well at my environment.
Did anybody meet the same problem? Thanks.

Best Regards