Basic HTML version of Foils prepared August 7 98

Foil 8 Jacobi Iteration: Communication

From DoD HPF Training -- 5. Parallel Programming in HPF DoD Training and Others -- 1995-98. by Chuck Koelbel -- Rice University
1 Element updates:
  • Each requires 4 values from previous update step
  • Static, local communication
    • Generally, the second-fastest kind (after no communication)
2 Convergence test:
  • Uses all values from latest update step
  • Static, global communication
    • Reduction operation
    • Efficient methods known, encapsulated in libraries
in Table To:

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