Basic HTML version of Foils prepared 26 March 99

Foil 17 Java Grande Forum Floating Point Proposals

From Java Grande: Is Java Useful in MPP/HPCC Environments? Frontiers 99 Conference Annapolis -- February 21-25 99. by Geoffrey C. Fox


Design Goals/Requirements:
  • Good Performance on most processors
  • High performance supported
  • exact reproducibility supported
  • access to IEEE floating point features
We propose three modes of floating point execution
strictfp: Reproducible results as in current default
new default: Exploit natural hardware (extended exponent in Intel and fused multiply add)
associatefp: Allow conventional compiler optimizations
Not at all clear that floating point suggestions will be accepted or even considered by Sun?
Generic Types, Operator Loading and lightweight classes are less controversial?



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