Hi all,
when looking at the semantics of all-to-all collectives on intercomms I
came to a point that isn't entirely clear from the standard: Am I'm
allowed to use different datatypes for each communication direction,
i.e. send MPI_INTEGERS from group A to group B and MPI_DOUBLES from B to A?
The
Hi Michael,
Personally, I would read and summarise the current MPI text about this as these
two restrictions:
The type map described by {sendcount, sendtype} in A must be consistent with
the type map described by {recvcount, recvtype} in B, e.g. {4, MPI_INTEGER} in
A and {1, strided_4_integers
Dan,
thanks, that was my understanding as well, as otherwise it would make
little sense.
Would it make sense to clarify that in the standard?
-Michael
On 30.04.19 12:33, HOLMES Daniel wrote:
> Hi Michael,
>
> Personally, I would read and summarise the current MPI text about this
> as these two
