Author: Dan Newman
Date: 04:24:38 04/25/00
Go up one level in this thread
On April 25, 2000 at 06:50:18, Andrew Williams wrote: >On April 25, 2000 at 05:59:45, Bas Hamstra wrote: > >>On April 25, 2000 at 01:33:45, Tom Kerrigan wrote: >> >>>On April 25, 2000 at 01:32:48, Tom Kerrigan wrote: >>> >>>>On April 25, 2000 at 01:20:11, Bas Hamstra wrote: >>>> >>>>>(Currently I myself have started all over trying to make a really fast rotated >>>>>BB program. Looks promising so far: make/unmake=2M/sec and movegeneration=12M >>>>>moves/sec on a Celeron 466) >>>> >>>>My program does gen/make/unmake at 2M/sec, and just gen at ~10M/sec. >>>> >>>>I'm not using any sort of bitboards. >>>> >>>>Maybe something to consider... >>>> >>>>-Tom >>> >>>Whoops, forgot to mention that I have a Celeron/400. >>>-Tom >> >>I am not very familiar with these type of statistics. What exactly does that >>"gen/make/unmake" mean? Gen all moves and then making/unmaking each? But what >>does it SAY..? I am afraid not much for my type of program. Here is why. >> >>- I have distinct functions gencaps() and gennoncaps() >>- Profiler says caps() is called 10x as much called as noncaps() >>- So 90% the time all the work of gen() is only to find a capture that gives a >>cutoff. Regardless if you distinct them or not. >> >>So you can maybe extremely fast gen+make+unmake all moves. But what *I* want to >>know is "how many times/sec" can I do a capgen(), since that has to be done >>practically *every* node. >> >>And since it don't seem to matter a lot timewise if I generate 3 or 5 captures, >>I simply measure the above TotalCapGens/sec. Maybe we can compare (same hardware >>anyway): >> >>after e4 e5 Nf3 Nf6 Nc3 Nc6 Bc4 Bc5 >> >>I can do a CaptureGen() 800k times a second. I am interested in what others >>have, especially 0x88 and non-rotated BB programs. >> >> >>Regards, >>Bas Hamstra. > >Hi > >The fen string for the position you describe is: > >r1bqk2r/pppp1ppp/2n2n2/2b1p3/2B1P3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 0 5 > >PostModernist is a 0x88 program, but it keeps up-to-date 32-bit attack >records, which it uses for capture generation (amongst other things). PM >can call generate_captures 510k times per second on a PIII-450 in this >position. I'd be very interested in other programs' performances. > >Andrew My 0x88 program gets 830k capture generations/s (10M iterations) on a Cel-400, but I'm not doing anything fancy, like attack records... -Dan.
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