Christopher Cameron, Peter Vaillancourt, CAC Staff (original)
Cornell Center for Advanced Computing

Revisions: 5/2022, 3/2019, 6/2017, 2/2001 (original)

Messages are the central element of MPI's design. This topic explains how MPI messages are structured and how the MPI function parameters relate to different parts of a message.

Objectives

After you complete this topic, you should be able to:

  • Describe the two basic parts of an MPI message
  • Distinguish between data and envelope parameters
  • Explain the purpose of communicators in MPI
  • Distinguish between communicators and tags
Prerequisites
 
©  |   Cornell University    |   Center for Advanced Computing    |   Copyright Statement    |   Inclusivity Statement