Basic HTML version of Foils prepared May 12 1996

Foil 133 HPCC and Java -- High Performance HPjava -- I

From CRPC Lectures on Java Language Applets Graphics CRPC Annual Meeting Tutorial -- May 14,1996. by Geoffrey C. Fox
1 The activities that has gone into defining High Performance Fortran (HPF) and HPC++ can be reexamined for Java which is quite well suited for parallelism as
  • It essentially has task parallelism built in with Applet mechanism
  • As there are no pointers, it is easier to define data and other implicit parallelism so it can be efficiently implemented
2 Interesting Compiler challenge independent of parallelism, is to produce efficient code from bytecodes. Here a technique called "just in time" compilation does compilation at runtime and can probably increase performance of Java code by a factor of 10 or so to become comparable with performance of C
3 Surely many will produce Fortran C PASCAL to Java translators so you can webify your existing applications
  • This is an alternative to wrapper technology as in native classes
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