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


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

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