Author: Steven J. Brann
Date: 08:24:19 01/02/04
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On January 02, 2004 at 11:05:41, Anthony Cozzie wrote: >On January 02, 2004 at 09:57:38, Jasmine Baer wrote: > >>I've seen it written that under the following conditions: >> >>1. Engine vs. Engine match or tournament >>2. Held on a single computer with a single processor >> >>having ponder=ON(or Permanent Brain in the Fritz GUI) will impact the play of >>the engines since the each individual engine would not have full access to the >>processor during its own turn. >> >>First, is this true? >> >>Second, is this issue, if it actually is an issue, something that is eliminated >>by running a two-processor system? >> >>And, finally, does anyone have any solid insight on how ponder=off/on or >>Permanent Brain works on a Pentium 4 with Hyperthreading? >> >>Thanks. > >Ponder means that the engine thinks while its opponent moves. Since there is >only 1 cpu, and both engines are thinking, they get half the cpu. > >HT is garbage for computer chess. A pentium 4 is ONE core. HT is designed for >applications that spend most of their time in the memory system. > >anthony To me, my 3.0G HT machine is NOT garbage for computer chess. When it is thinking about a position it takes up 50% of the CPU and is still much much faster than my 1.9G P4 machine. When analyzing a position with my 1.9G P4, the machine would be rendered useless for using any other application while it was thinking about a position. So, HT enables me to accomplish other things on the machine at the same time ... email, reviewing this site, chat with video, Word, Excel ... and performance-wise its as if the chess program isn't running at all. I'm analyzing a position as I write this. That means a lot to ME. Certainly not garbage in my opinion. Steve
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