HTML version of Scripted Foils prepared 11 November 1996

Foil 4 MPI Overview -- Comparison with HPF -- II

From CPS615-Initial Lecture on MPI ending with discussion of basic MPI_SEND Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 31 October 96. by Geoffrey C. Fox *
Secs 105.1
1 HPF runs on SIMD and MIMD machines and is high level as it expresses a style of programming or problem architecture
2 MPI runs on MIMD machines (in principle it could run on SIMD but unnatural and inefficient) -- it expresses a machine architecture
3 Traditional Software Model is
  • Problem --> High Level Language --> Assembly Language --> Machine
  • -------- Expresses Problem -- Expresses Machine
4 So in this analogy MPI is universal "machine-language" of Parallel processing
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