Robert Latham robl at mcs.anl.gov
Fri Aug 17 13:29:50 CDT 2007

On Fri, Aug 17, 2007 at 02:10:41PM -0400, Scott Atchley wrote:
> [cli_0]: aborting job:
> Fatal error in MPI_Comm_size: Invalid communicator, error stack:
> MPI_Comm_size(112): MPI_Comm_size(comm=0x5b, size=0x7fff18349588) failed
> MPI_Comm_size(70).: Invalid communicator

I just saw a similar warning a couple days ago. I was trying to build
MPICH (with gcc), and somehow the "system" mpicc (compiled with PGI)
seemed to be messing up the build somehow.  

When I removed mpicc from my PATH, things built and ran just fine, so
I didn't stop to debug the problem further.


Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B

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