[mpiwg-p2p] [mpiwg-p2p/p2p-issues] nonblocking sendrecv (#2)

[HOLMES Daniel]

Hi Brandon,

Thanks for volunteering!

do I need some additional permissions somewhere?
Wesley (cc'd) can give you access to the private MPI Forum Github repo.

I think there is merit in this suggestion for a nonblocking and persistent versions of MPI_Sendrecv and MPI_Sendrecv_replace.

I’m forwarding this to the point-to-point working group email list so that others have a chance to see it and comment.

Cheers,
Dan.
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Dr Daniel Holmes PhD
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On 6 Mar 2019, at 16:58, brandongc <notifications at github.com<mailto:notifications at github.com>> wrote:


I would like to propose adding a nonblocking sendrecv. This is different from MPI_ISEND + MPI_IRECV + MPI_WAITALL in that 1 fewer request is involved and is far more convenient for developers who wish to convert blocking code to nonblocking. Additionally there are not persistent versions currently.

At a minimum I would like to add:

  *   MPI_ISENDRECV
  *   MPI_ISENDRECV_REPLACE

Persistent versions would involve adding:

  *   MPI_SENDRECV_INIT
  *   MPI_SENDRECV_REPLACE_INIT

If people think it is a good idea I can to put the relevant text together in a branch. Is there a place for that under https://github.com/mpiwg-p2p? or do I need some additional permissions somewhere?

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