[OMPI users] Open MPI program cannot complete

[Jack Bryan]

Hi 
I got a problem of open MPI.
My program has 5 processes. 
All of them can run MPI_Finalize() and return 0. 
But, the whole program cannot be completed. 
In the MPI cluster job queue, it is strill in running status. 
If I use 1 process to run it, no problem.
Why ? 
My program:
int main (int argc, char **argv) {
        MPI_Init(&argc, &argv); MPI_Comm_rank(MPI_COMM_WORLD, &myRank); 
MPI_Comm_size(MPI_COMM_WORLD, &mySize); MPI_Comm world; world = MPI_COMM_WORLD;
        if (myRank == 0)        {               do some things.         }
        if (myRank != 0)        {               do some things.                 
MPI_Finalize();         return 0 ;      }       if (myRank == 0)        {       
        MPI_Finalize();                 return 0;       }       }
And, some output files get wrong codes, which can not be readible. In 1-process 
case, the program can print correct results to these output files . 
Any help is appreciated. 
thanks
Jack
Oct. 24 2010