Message Passing Interface: Difference between revisions

Revision as of 18:09, 16 March 2024

Revision as of 18:10, 16 March 2024

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{{Expand section|date=June 2008}}

The key aspect is "the ability of an MPI process to participate in the creation of new MPI processes or to establish communication with MPI processes that have been started separately." The MPI-2 specification describes three main interfaces by which MPI processes can dynamically establish communications, <code>MPI_Comm_spawn</code>, <code>MPI_Comm_accept</code>/<code>MPI_Comm_connect</code> and <code>MPI_Comm_join</code>. The <code>MPI_Comm_spawn</code> interface allows an MPI process to spawn a number of instances of the named MPI process. The newly spawned set of MPI processes form a new <code>MPI_COMM_WORLD</code> intracommunicator but can communicate with the parent and the intercommunicator the function returns. <code>MPI_Comm_spawn_multiple</code> is an alternate interface that allows the different instances spawned to be different binaries with different arguments.<ref name="Gropp99adv-p7">{{harvnb |Gropp |Lusk |SkjellingSkjellum |1999 |p=7 }}</ref>

===I/O===