On Mar 19, 2008, at 7:31 PM, Gregg Germain wrote:
Hi everyone,
I've created a 2 node cluster running FC8. I've installed MPICH2
1.0.6pl on both (not NFS'd).
The Master, Ragnar, is a 64 bit; olaf is a 32 bit.
I set up the ring, and mpdtrace shows:
$ mpdtrace -l
Ragnar_37601 (192.168.0.2)
olaf_45530 (192.168.0.5)
$
I run a VERY simple MPI program and it hangs:
#include "mpi.h"
#include <stdio.h>
#include <math.h>
#include <string.h>
int main( int argc, char *argv[] )
{
MPI_Init(&argc,&argv);
printf("Hello!\n");
MPI_Finalize();
return 0;
}
If it's not a 32/64 bit issue (as the other poster mentioned) you
should try putting an MPI_Barrier() call immediately before the
MPI_Finalize(). This will at least make sure that both instances
have made it complete through MPI_Init() before the one or the other
one exits.
-bill
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