OpenMPI MPI_Barrier problems

Question

I having some synchronization issues using the OpenMPI implementation of MPI_Barrier:

int rank;
int nprocs;

int rc = MPI_Init(&argc, &argv);

if(rc          


        

Answer 1

Adding to the previous answers here, your MPI_BARRIER works fine.

Though, if you just intend to see it working, you can force pause the execution (SLEEP(1)) for a moment to let the output catch up.