Basic HTML version of Foils prepared 12 August 1996

Foil 4 Some Critical Features of Java and Parallelism

From Master Foilset Web Based Network Technologies for Scientific Computing CRPC NSF Review August 15-16 1996 -- 16 August 96. by Geoffrey C. Fox
Secs 113
1 Large Scale Applications (as discussed by Foster) need many forms of parallelism
  • Coarse Grain Software Integration or Coordination
    • Naturally built into Java through Applet mechanism and networking classes
  • Data Parallelism -- needed for "massive parallelism"
2 Java needs (runtime and perhaps language) extension to support HPF/HPC++ like data parallelism but Foster's talk has shown that "Java plus message passing" is already here
  • Note that Fortran or C plus message passing (PVM,MPI) is dominant implementation technology for data parallelism over last ten years
3 It is possible that Java will not "make it" but current momentum is hard to derail!
  • Limbo (A T and T) and Active-X (Microsoft) are possibilities
4 If Java is not the web language of future, then whatever replaces it must be better and our remarks should be applied to its replacement!
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