[mpich-discuss] Fatal error in PMPI_Comm_rank

[Hong-Jun Kim]

int main( int argc, char *argv[] )
{
   int rank, size, err;
   MPI_Init(&argc, &argv);
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
   MPI_Comm_size(MPI_COMM_WORLD, &size);
....
}

I am currently using MPI_COMM_WORLD communicator as above.
Can I ask how I can change the communicator to remove the error?
Thanks.

-----------------------------
Hong-Jun Kim
Post-doc researcher
MCS, Argonne National Laboratory
9700 S. Cass Ave. B240/R2147
Argonne, IL 60439
630-252-4791
hongjun at mcs.anl.gov
-----------------------------

----- Original Message -----
From: "Pavan Balaji" <balaji at mcs.anl.gov>
To: mpich-discuss at mcs.anl.gov
Cc: "Hong-Jun Kim" <hongjun at mcs.anl.gov>
Sent: Thursday, February 24, 2011 7:33:19 PM
Subject: Re: [mpich-discuss] Fatal error in PMPI_Comm_rank


On 02/24/2011 07:29 PM, Hong-Jun Kim wrote:
> I compiled my program with "mpich2-1.3.2p1" without any problems as at the end of this e-mail.
> But, if I execute it, I have some errors I can not understand as follows.
> Could any body give me any advice about this problem?

To state the obvious, looks like you are trying to find the rank in an 
invalid communicator :-).

  -- Pavan

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