Basic HTML version of Foils prepared 7 Sept 1997

Foil 31 What Limits Performance of Compiled Java?

From Introduction to Java to be used in (Scientific) Computing Basic Simulation Track for Computational Science CPS615 -- Fall Semester 97. by Geoffrey C. Fox, Nancy McCracken


1 Syracuse and Las Vegas Workshops saw no serious problem to High Performance Java on sequential or Shared Memory Machines
2 Some restrictions are needed in programming model
  • Cynic says write in Fortran with Curly Brackets but more seriously restrictions requires programming discipline but still exploit key advantages of Java
3 For instance, Avoid Complicated Exception handlers in areas compilers need to optimize!
4 Should be able to get comparable performance on compiled Java C and Fortran starting with either Java Language or JavaVM bytecodes
5 The Interpreted (Applet) JavaVM mode would always be slower than compiled Java/C/Fortran -- perhaps by a factor of two with best technology

in Table To:


© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Nov 29 1998