Author: Vincent Diepeveen
Date: 09:08:28 02/16/04
Go up one level in this thread
On February 16, 2004 at 12:02:16, Robert Hyatt wrote: >On February 16, 2004 at 11:30:57, Jorge Pichard wrote: > >>I still don't understand why Fritz nor Shredder have not been able to get an AMD >>sponsor, since 95% of the times it is sponsored by company that runs Intel >>inside. They need to get a different sponsor in order to beat Hydra in the World >>Championship. >> >>Hydra gets effectively around 4 million nodes a second >> >>I am very sure that a Quad opteron for a software program is >>faster than 4 fpga cards 30Mhz are. > >quad opteron box is NUMA. There are some issues there that have to be addressed >by anyone using such a box. Just taking a pure SMP program and dropping it in >may not produce such good results. Dual opterons are a bit easier to use. It works SMP great too. The latency when using it SMP is still faster than quad xeon chipset can deliver to you. Even without PGO and using old GCC version SMP version from diep gets a lot of nps at that box slightly less than it gets at a 8 processor Xeon. the numa version a lot less (not sharing evaluation tables nor pawn tables and the numa version tested wasn't sharing qsearch hashtables either). See www.aceshardware.com for diep SMP tests at quad opteron boxes. >Another issue is that AMD will likely want to see real 64 bit applications. >That is why they developed an interest in Crafty, in fact, because it really >needed the 64 bit internal stuff the opteron offers. Fritz, et al don't need >nor will they use this particular part of the opteron... > > >> >>Fritz and Shredder run in Paderborn on an identically constructed Transtec >>diagram workstation with two Intel each Xeon processors with 3,06 Ghz and 2 >>gigabyte memory. Deep Fritz will also count over 1 gigabyte Hashtabellen and >>with 2 to 2.3 million position/second for instance a search depth on 14 to 16 >>sections will reach, in the final game by means of 20 sections, strongly >>dependent on position and material. >> >>When ordered a Quad Opteron cost perhaps $45k and fpga cards cost only $3000 a >>card and a 4 node cluster Quad Xeon 3.06Ghz costs less than $45k. >> >>Here are some comparison of a Dual Opteron versus a Dual Xeon: >>http://www.gamepc.com/labs/view_content.asp?id=opt248vsxeon32a&page=5
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