From: "Rajeev Thakur" <thakur@XXXXXXXXXXX>
Date: January 14, 2008 10:48:53 PM CST
To: "'William Gropp'" <gropp@XXXXXXXXXXX>
Subject: Reduce_scatter

Bill,
     The definition of MPI_Reduce_scatter for intra-communicators says that
the recvcounts array must be identical on all processes
(http://www.mpi-forum.org/docs/mpi-11-html/node83.html). If we go by that
definition, then the current defintion of reduce-scatter for
inter-communicators is correct as it is. It says "Within each group, all
processes provide the same recvcounts argument, and the sum of the
recvcounts entries should be the same for the two groups."
http://www.mpi-forum.org/docs/mpi-20-html/node150.htm

Rajeev