Author: Vincent Diepeveen
Date: 15:49:47 06/29/03
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On June 29, 2003 at 18:37:35, Peter Stayne wrote: >The original question was about duals. Your results say 'single CPU', I'll take >that to mean that it's stressing the individual CPU's and not the combined >efficiency of the chipset's memory interface when spread over dual usage, which >was the point I was making before. the commercial software, scales dual very well in nodes a second. No big diff between dual K7 and dual Xeon there. So don't use stupid excuses. The K7 is simply *way* faster for the vaste *majority* of chessprograms. Just try 20 programs at it and you'll see. >I routinely ask people I play on Playchess what hardware they run on, and 'the >p4's of mine' are on par with the AMD PR numbers generally. You just ask fritz dudes of course. No wonder at playchess. that's the fritz server AFAIK. That program is so outdated technical seen that it still more or less fits in the L1 cache, nowadays called trace cache. So wake up. open your eyes. there is another 200 engines or so. And those are *not* on par. Here is the problem of fritz. It is such a tiny program that it can't even take advantage of the big features the K7 offers for positional chess knowledge. example is its 128KB L1 cache, versus the 8KB + 12K (that's microops, not even instructions) L1 cache of the P4. What is bigger? Right. Of course the marketing department never told you fritz doesn't know the diff between a bishop and a knight. Perhaps you as USER should demand that it knows what a strong bishop is! Guess why it fits in such a tiny processor? It just doesn't have all that knowledge! You just look to 1 very tiny in assembly written program. Now please take a look to something that can run fast at the opteron in 64 bits too. I'm not sure Frans is going to do effort to rewrite his entire assembly to x86-64 :) Where others can efficiently work on the knowledge or search or whatever, he has to recode for a full year his engine in order to run at such a new architecture. All i need is someone else (Nalimov?) sweatting creating a 64 bits x86-64 visual c++ compiler. If not then i'll go for 64 bits GCC at the opteron. And if that ain't enough then i'll take a bit older compiler (mipspro) and just get 500 cpu's :) Frans on the other hand is really outdated busy. Half his life he is just porting his code to a new assembly language and a new processor. No time to improve its knowledge! Best regards, Vincent
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