Scripted HTML version of Foils prepared 11 November 1996

Foil 19 Basic Point to Point Message Passing I

From CPS615-Initial Lecture on MPI ending with discussion of basic MPI_SEND Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 31 October 96. by Geoffrey C. Fox *
Secs 146.8
Communication is between two processors and receiving process must expect a message although can be uncertain asto message type and sending process
Information required to specify a message includes
  • Identification of sender process(or)
  • Identification of destination process
  • Type of data -- Integers, Floats, Characaters -- note floating point numbers may need conversion if sending between machines of different type
  • Number of data elements to send and in destination process, maximum size of message that can be received
  • Where the data lives in sending process -- typically a pointer
  • Where the received data should be stored into -- again a pointer

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Fri Aug 15 1997