MPI Overview -- Comparison with HPF -- II
HPF runs on SIMD and MIMD machines and is high level as it expresses a style of programming or problem architecture
MPI runs on MIMD machines (in principle it could run on SIMD but unnatural and inefficient) -- it expresses a machine architecture
Traditional Software Model is
- Problem --> High Level Language --> Assembly Language --> Machine
- Expresses Problem Expresses Machine
So in this analogy MPI is universal "machine-language" of Parallel processing
MPI can be built efficiently at low risk whereas HPF compiler is difficult project with many unsolved issues