[MPICH] MPI_Comm_spawn and argument array_of_errcodes

Wei-keng Liao wkliao at ece.northwestern.edu
Tue Aug 28 18:01:26 CDT 2007

Is the argument array_of_errcodes significant only at root in function 
MPI_Comm_spawn() and MPI_Comm_spawn_multiple()?
MPI-2 standard seems to indicate it is not.

My test of mpich2 shows the returned values in this argument are only 
significant at root. If non-root processes check this argument may see 
values other than MPI_SUCCESS, due to this uninitialized integer array.


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