Basic HTML version of Foils prepared 19 September 1997

Foil 51 Granularity of Parallel Components - I

From Master Set of Foils for 1997 Session of CPS615 CPS615 Basic Simulation Track for Computational Science -- Fall Semester 97. by Geoffrey C. Fox
1 Coarse-grain: Task is broken into a handful of pieces, each executed by powerful processors.
  • Pieces, processors may be heterogeneous. Computation/
  • Communication ratio very high -- Typical of Networked Metacomputing
2 Medium-grain: Tens to few thousands of pieces, typically executed by microprocessors.
  • Processors typically run the same code.(SPMD Style)
  • Computation/communication ratio often hundreds or more.
  • Typical of MIMD Parallel Systems such as SP2, CM5, Paragon, T3D
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