Basic HTML version of Foils prepared 10 Oct 1995

Foil 19 Basic Point to Point Message Passing I

From Fox Presentation Fall 1995 CPS615 Basic Simulation Track for Computational Science -- Fall Semester 95. by Geoffrey C. Fox
1 Communication is between two processors and receiving process must expect a message although can be uncertain asto message type and sending process
2 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
in Table To:

© on Tue Oct 7 1997