This website contains information about the activities of the MPI Forum, which is the standardization forum for the Message Passing Interface (MPI). You may find standard documents, information about the activities of the MPI forum, and links to comment on the MPI Document using the navigation at the top of the page.

Link to the central MPI-Forum GitHub Presence

2020 MPI Standard Draft / MPI 4.0 Release Candidate

The MPI Forum has published a draft version of the MPI 4.0 Standard to give users and implementors a chance to see the current status of all proposals that have been merged into the next version of the MPI Standard. This draft is the release candidate for the MPI 4.0 Specification and will be considered for ratification at the December 2020 and February 2021 meetings. The draft is available here:

2020 Draft Specification

Comments on the MPI 4.0 RC should be sent to the MPI Comments mailing list.

This draft specification is not an official standard version and is subject to change before being published as an official version of the MPI Standard.


BoF at SC 20, Nov. 18, 2020

The MPI Forum BoF took place on Wednesday November 18th, 2020 at 10am Eastern US time.

Registration to attend BoFs is free and a recording of the session including Q&A will be available for 6 months after the event if registration is done by mid-December.

BoF at ISC 19, Jun. 19th, 2019

Presentation from the MPI Forum BoF Session at ISC 19:

BoF at SC 18, Nov. 14th, 2018

Presentations from the MPI Forum BoF Session at SC 18:

Meeting Coordinators

  • Martin Schulz, Meeting Chair
  • Richard Graham, Convener
  • Wesley Bland, Meeting Secretary
  • Bill Gropp, Editor

Previous Efforts

  • Martin Schulz, MPI 3.1
  • Richard Graham, MPI 3.0
  • Bill Gropp, MPI 2.2
  • Rolf Rabenseifner, MPI 2.1

Steering Committee

  • Jack Dongarra
  • Al Geist
  • Richard Graham
  • Bill Gropp
  • Andrew Lumsdaine
  • Ewing Lusk
  • Rolf Rabenseifner