[mpiwg-abi] MPI-5 ABI proposal

[Holmes, Daniel John]

Hi Jeff,

Thanks - I looked through quickly - there's nothing outlandish it there, IMHO - seems sensible/modest.

Slide 9 question "both mpi.h and mpi_abi.h in same program?"

Do you mean "in the same translation unit" or "in different libraries linked together into a single binary" or something else?

I'm thinking that the World model encourages the user to pass a communicator from the place where MPI_INIT was called into each sub-program/library - there must be agreement between them on the type/value.

There are a bunch of what-if scenarios here: passing an MPI_Status from one place to another using a parameter/return value suggests your option 1 is the correct answer there (language copy would work).

Best wishes,
Dan.

From: mpiwg-abi <mpiwg-abi-bounces at lists.mpi-forum.org> On Behalf Of Jeff Hammond
Sent: 24 January 2023 15:01
To: mpiwg-abi at lists.mpi-forum.org
Subject: [mpiwg-abi] MPI-5 ABI proposal

As requested, I have made a concrete proposal for the MPI-5 ABI.

https://docs.google.com/presentation/d/1cU9ewMUa7w3eaRVtfzov8NinyjzNSp5nF_peT92SE8I/edit?usp=sharing

Request edit access if you want to paint the bike shed with me.

Jeff

--
Jeff Hammond
jeff.science at gmail.com<mailto:jeff.science at gmail.com>
http://jeffhammond.github.io/
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