Author: Dave Gomboc
Date: 10:27:53 04/08/99
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On April 08, 1999 at 13:15:37, David Eppstein wrote: >On April 08, 1999 at 00:50:38, Dave Gomboc wrote: >>My understanding is that the performance of JIT compilers on cpu-intensive >>code is approximately 40x slower than C++. (Does that figure sound realistic?) > >No, I think the factor is more like 2x-3x if even that. I can get 200K nodes per >second for the game program I wrote (not for chess, the game is simpler, but >even so...) using Apple's JIT on a 233Mhz G3. Hmmm. It's hard to beat real evidence. :) The same fellow who quoted me "40x" loss (actually 20x to 80x) also told me it's hard to tell for sure. He specifically mentioned that Apple's latest JIT was "5x" better than the previous iteration on some of his code, and that in general the technology was still changing rapidly. But 2x sounds quite bearable, for research, anyway. Dave Gomboc
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