Author: Robert Hyatt
Date: 15:34:35 11/20/02
Go up one level in this thread
On November 20, 2002 at 16:52:11, Dan Andersson wrote: >>Why does this matter? The point is that a bitmap program and a non-bitmap >>program >>are playing with equal skill. If you want to take the position that one of the >>programmers >>is very good and the other is very bad, that's ok. I know my programming skill. >> I can't >>speak for anybody else. So that leaves us at "yace is poorly written and Crafty >>is well-written >>so the comparison is invalid." >> >>I don't buy that... >> >You don't have to. And I can only conclude that your sometimes overactive >imagination made you think that. And that has nothing whatsoever to do with the >issues discussed. The issue IMO is would any one of the programs would benefit >from a different data representation. That wasn't what was being discussed. It was quite simply: "will a bitmap program gain more from moving from 32 bit to 64 bit architecture than a non-bitmap program?" It then degenerated into: "is a bitmap program significantly worse than a non-bitmap implementation to start with on an X86 architecture?" I think the latter can be answered by taking a look at bitmap and non-bitmap programs and comparing their results on equal hardware. Fritz/tiger are pretty equal. Crafty/yace are pretty equal. The conclusion is that bitmaps don't necessarily handicap or help a program on X86. Then we go back to the other question which I _know_ the answer to, namely that 64 bit programs will get a bigger boost from moving to 64 bits than non-64bit programs. And I gave an example of this as well... > And what will happen on a 64 bit machine. >Not some veak claim of: Since these two programs are of similar strength. I >therefore conlude I am right. Weak logic. Handvaving and apples and oranges is >what I read. Not that I believe that you are wrong. But the fact is that you >make a claim and when you are asked to back it up. You resort to very shaky >lines of reasoning. I resort to the _only_ method of reasoning there is at the moment. I'm not interested in rewriting Crafty to use non-bitmaps so that _everything_ will be the same. I doubt any non-bitmapper is interested in doing the inverse. All that is left is to see if we see any "class" of program that seems to be significantly stronger than the other. I say no, for the examples cited above. it's not "science" but it also isn't a "coin toss" either... And, in fact, it is about the only data we have to look at. > >MvH Dan Andersson
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