Basic HTML version of Foils prepared Sept 12 97

Foil 103 What Limits Performance of Compiled Java?

From General NPAC Foils-B starting June97(PowerPoint) ParCo Conference Bonn -- Sept 16,97. by Geoffrey C. Fox


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

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