Message Passing Interface: Difference between revisions

Revision as of 16:28, 16 February 2023

Revision as of 15:54, 17 February 2023

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MPI is a [[communication protocol]] for programming<ref>{{cite book |first=Frank |last=Nielsen | title=Introduction to HPC with MPI for Data Science | year=2016 | publisher=Springer |isbn=978-3-319-21903-5 |pages=195–211

|chapter=2. Introduction to MPI: The MessagePassing Interface | url=https://franknielsen.github.io/HPC4DS/index.html

|chapter-url=https://www.researchgate.net/publication/314626214_Introduction_to_MPI_The_Message_Passing_Interface314626214 }}</ref> [[parallel computers]]. Both point-to-point and collective communication are supported. MPI "is a message-passing application programmer interface, together with protocol and semantic specifications for how its features must behave in any implementation."<ref>{{harvnb |Gropp |Lusk |Skjellum |1996 |p=3 }}</ref> MPI's goals are high performance, scalability, and portability. MPI remains the dominant model used in [[high-performance computing]] today.<ref>{{cite book|title=High-performance and Scalable MPI over InfiniBand with Reduced Memory Usage: An In-depth Performance Analysis|pages = 105|first1=Sayantan|last1=Sur|first2=Matthew J.|last2=Koop|first3=Dhabaleswar K.|last3=Panda|date=4 August 2017|publisher=ACM|doi=10.1145/1188455.1188565|chapter = MPI and communication---High-performance and scalable MPI over Infini ''Band'' with reduced memory usage|isbn = 978-0769527000|s2cid = 818662}}</ref>

MPI is not sanctioned by any major standards body; nevertheless, it has become a [[de facto standard|''de facto'' standard]] for [[communication]] among processes that model a [[parallel programming|parallel program]] running on a [[distributed memory]] system. Actual distributed memory supercomputers such as computer clusters often run such programs.