Basic HTML version of Foils prepared 24 August 98

Foil 25 Shared-Memory Machines

From Master Foilset for CPS615 Introduction -- Material from Culler and Koelbel Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
All processors access the same memory.
Advantages:
  • Retain sequential programming languages such as Java or Fortran
  • Easy to program (correctly)
  • Can share code and data among processors
Disadvantages:
  • Hard to program (optimally)
  • Not scalable due to bandwidth limitations in bus

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