Message Passing Interface

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article needs to be updated. The reason given is: MPI-4.0 was approved by the MPI Forum in June 2021. Please help update this article to reflect recent events or newly available information. (October 2021) This article needs to be updated. The reason given is: MPI-4.1 was approved by the MPI Forum in November 2023 (https://www.mpi-forum.org/docs/). Please help update this article to reflect recent events or newly available information. (May 2024) (Learn how and when to remove this message)

The Message Passing Interface (MPI) is a standardized and portable message-passing standard designed to function on parallel computing architectures.^[1] The MPI standard defines the syntax and semantics of library routines that are useful to a wide range of users writing portable message-passing programs in C, C++, and Fortran. There are several open-source MPI implementations, which fostered the development of a parallel software industry, and encouraged development of portable and scalable large-scale parallel applications.