Author: Robert Hyatt
Date: 10:01:40 07/18/99
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On July 18, 1999 at 11:06:34, Andrew Williams wrote: >On July 18, 1999 at 10:00:42, Robert Hyatt wrote: > >>On July 18, 1999 at 03:17:02, Scott Gasch wrote: >> >>>What are the typical ways people use to improve the speed of the searching >>>algorithm? Here's what I have done: move ordering / history, memory pool for >>>moves so I am not calling malloc/free, optimized my C as much as I can, save a >>>pointer to the kings on a board representation so I do not have to search for >>>them when looking for checks. >>> >>>And still the program is sluggish; it gets a little over 20,000 nodes/sec on my >>>AMD K6-3 400. For comparison I clocked TSCP on the same machine and it is >>>getting about 15,000 nodes/sec. >>> >>>How can I speed this up more? What is a good speed on this kind of hardware? >>> >>>Thanks, >>>Scott >> >> >>First thing to check is your compile options. 15K is _very_ slow. It should >>be 10x that for TSCP... > > >Do you mean "2x that for TSCP"? I just tried mine and got approx 30Knps - this >is on a K6-2 300. (The position I tried was after 1. e4 e5 2. Nf3 Nf6) > >Andrew No... something is wrong. Crafty, on a P5/133, hits around 30K nodes per second. You are on a machine 3x faster at least, maybe 3.5x. It sounds like the optimizer isn't enabled...
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