HTML version of Scripted Foils prepared 11 November 1996

Foil 13 Granularity of Parallel Components - I

From CPS615-Lecture on Computer Architectures and Networks Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 12 September 96. by Geoffrey C. Fox *
Secs 207.3
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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