Parallel Programming by Thomas Rauber & Gudula Rünger

Author:Thomas Rauber & Gudula Rünger
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

This call starts the MPI program programname with processes. The specific command to start an MPI program on a parallel system can differ.

A significant part of the operations provided by MPI are operations for the exchange of data between processes. In the following, we describe the most important MPI operations. For a more detailed description of all MPI operations, we refer to [153, 181, 182]. In particular, the official description of the MPI standard provides many more details that cannot be covered in our short description, see [62]. Most examples given in this chapter are taken from these sources. Before describing the individual MPI operations, we first introduce some semantic terms that are used for the description of MPI operations: blocking operation: An MPI communication operation is blocking, if return of control to the calling process indicates that all resources, such as buffers, specified in the call can be reused, e.g., for other operations. In particular, all state transitions initiated by a blocking operation are completed before control returns to the calling process.

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