On Dec 12, 2011, at 9:45 AM, Josh Hursey wrote:
For MPI_Comm_split, all processes in the input communicator (oldcomm
or MPI_COMM_WORLD in your case) must call the operation since it is
collective over the input communicator. In your program rank 0 is not
calling the operation, so MPI_Comm_sp
I am attempting to split my application into multiple master+workers
groups using MPI_COMM_split. My MPI revision is shown as:
mpirun --tag-output ompi_info -v ompi full --parsable
[1,0]:package:Open MPI root@build-x86-64 Distribution
[1,0]:ompi:version:full:1.4.3
[1,0]:ompi:version:svn:r23834
[1
