[Mpi3-rma] Info accumulate_ops

Hubert Ritzdorf Hubert.Ritzdorf at EMEA.NEC.COM
Tue Oct 16 08:35:08 CDT 2012


I think that there is a problem in the definition of info argument
"accumulate_ops" of MPI_Win_create functions (Page 406, Line 4-9
of MPI 3.0 document).

(*) A value is missing if not all concurrent accumulate calls perform the
     same operation.
     Possible values might be: "not_same_op" or "false"
(*) The actual default value of "same_op_no_op" breaks the backward
      compatibility and causes problems in portability of applications, since a MPI
      implementation is not required to evaluate (recognize) info keys.
      Therefore, "not_same_op" must be the default value of info argument


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