[mpich-discuss] mpiexec Mac OS execution error

[Anthony Chan]

there could be multiple problem in your MPI installation
or compilation of icarus_mac.exe.

----- Original Message -----

> theron$ mpiexec -np 2 icarus_mac.exe <steady_slowest.in
> Fatal error in MPI_Comm_rank: Invalid communicator, error stack:
> MPI_Comm_rank(106): MPI_Comm_rank(comm=0x1, rank=0x1001ecd04) failed
> MPI_Comm_rank(64).: Invalid communicator

The usual reason for "invalid communicator" error is including incorrect
MPI header file in creating icarus_mac.exe.  Are there multiple MPI installations
on your mac ?  Did you use MPI wrappers, i.e. mpicc/mpif77, in building
icarus_mac.exe ?

> rank 0 in job 15 comp.local_53650 caused collective abort of all ranks
> exit status of rank 0: return code 1

A.Chan