Basic HTML version of Foils prepared 19 September 98

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

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken


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
5 MPI can be built efficiently at low risk whereas HPF compiler is difficult project with many unsolved issues

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