Basic HTML version of Foils prepared 24 August 98

Foil 77 Pragmatic Computational Science August 1998

From Master Foilset for CPS615 Introduction -- Material from Culler and Koelbel Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken


1 So here is a recipe for developing HPCC (parallel) applications as of August 1998
2 Use MPI for data parallel programs as alternatives are HPF, HPC++ or parallelizing compilers today
  • Neither HPF or HPC++ has clear long term future for implementations -- ideas are sound
  • MPI will run on PC clusters as well as customized parallel machines -- parallelizing compilers will not work on distributed memory machines
3 Today Fortran and C are good production languages
4 Today Java can be used for client side applets and in systems middleware but too slow for production scientific code
  • This should change over next year with better Java compilers -- including "native" compilers which do not translate to Java Virtual Machine but go directly to native machine language
5 Use metacomputers for pleasingly parallel and metaproblems -- not for closely knit problems with tight synchronization between parts
6 Use where possible web and distributed object technology for "coordination"
7 pleasingly parallel problems can use MPI or web/metacomputing technology

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