Basic HTML version of Foils prepared 24 August 98

Foil 15 Multicomputer Architecture

From Master Foilset for CPS615 Introduction -- Material from Culler and Koelbel Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
Multicomputer = nodes + network
Node = processor(s) + local memory
Access to local memory is cheap
  • 10s of cycles; does not involve network
  • Conventional memory reference
Access to remote memory is expensive
  • 100s or 1000s of cycles; uses network
  • Use I/O-like mechanisms (e.g., send/receive)

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