Author: Vincent Diepeveen
Date: 05:08:44 03/25/02
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On March 24, 2002 at 17:08:32, Tom Kerrigan wrote: >On March 24, 2002 at 10:03:26, Vincent Diepeveen wrote: > >>there was no jump at all. the palomino is not faster than the tbird. >>If you look well the only thing that speeded up are the compilers. > >Wrong, the Palomino has a bigger TLB, prefetching, and SSE. Using the same compiler i do not see speed difference between palomino and tbird for DIEP, so this TLB, prefetching is not influencing my program a lot. Nor is it for crafty. Newer compilers are that 10-15% most people speak about. The 2% speedup diep has now is from adding a processor pack to the compiler. Not from the MPs i run at now :) SSE i'm not using of course, i'm not an assembly freak. > >>64 bits cpu's we won't see soon. >> a) they are hell slow because they are clocked low >> b) it is very expensive > >Wrong, Hammer will clock higher than the AXP and Clawhammer prices will be >similar. When did the 64 bits hype start, 1994? It's 2002 now and we won't see a hammer in the shops before 2003. >>Even the mckinley (if you can pay it) will be only available at 1Ghz >>initially is what intel says now. > >Who was talking about McKinley? And where did you get 1GHz? Their target has >been 1.2GHz for years. Exactly why i mentionned it, it's recently shifted to 1Ghz. >>Of course you can't compare this with P4, which simply has >>lobotomized its L1 data cache somehow and also RDRAM runs at >>a slow 100Mhz with 15T latency. >Quad-pumped 100MHz = effective 400MHz, and latency depends on the pages you're >accessing. Not a single chessprogram that i know is busy with sequential things, yours is? Only latency is important and that's 100Mhz simply. RDRAM is hell slow for me. Even if you pump it 16 times it still is 100Mhz latency for me. That the bandwidth is bigger *theoretically* (not practically as tests indicate) than DDR ram, that's not my worry, but gives hope for the future. >-Tom Best regards, Vincent
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