Re: next ballot

[William Gropp <gropp@mcs.anl.gov>]

At 08:22 PM 10/23/2001 +0200, Jesper Larsson Traeff wrote:

>Has the voting started? If so (and even if not):
>
>---
>
>NEC agrees to all clarifications of Oct 7, 2001 (1-17), but with
>the following suggestion/question:
>
>Item 7:
>
>Drop rationale (or at least the last sentence, "Extentding it...")

I'd rather leave in the rationale (more information is better than less), 
though I'm open to alternate wordings.


>Drop the preceeding lines 6-10 on p. 120 (they are confusing, and seem
>to say that with MPI_Accumulate the predefined op's can also be used with
>certain user-defined datatypes. This is probably not intended!?)

It was intended that MPI_Accumulate be used with predefined ops on derived 
datatypes.  For example, an indexed datatype with MPI_REPLACE allows 
MPI_Accumulate to perform a scatter operation (with different atomicity 
than MPI_PUT).  Dropping lines 6-10 would significantly change the standard 
as written.

Bill