[mpiwg-rma] same_op_no_op

[Balaji, Pavan]

On Mar 13, 2014, at 2:47 PM, Jeff Hammond <jeff.science at gmail.com> wrote:
> If we thought it was a mistake in MPI-2 to disallow it, wouldn't we
> have tried to relax it in MPI-3?  Brian had commented before that we
> might have been confused when defining same_op_no_op and really meant
> same_op_no_op_replace, which is a perfectly reasonable default
> semantic.

It was not disallowed in MPI-2.  I meant that we made a mistake in MPI-3 to disallow it since that is not backward compatible.

IMO, we should have kept the same semantics as MPI-2, but allowed the user to relax it with info arguments.

  — Pavan