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
