Author: Vincent Diepeveen
Date: 13:07:38 12/28/03
Go up one level in this thread
On December 27, 2003 at 19:00:30, Daniel Clausen wrote: >On December 27, 2003 at 14:05:23, Robert Hyatt wrote: > >>On December 27, 2003 at 12:36:32, Mridul Muralidharan wrote: >> >>>On December 27, 2003 at 09:04:05, Sune Fischer wrote: >>> >>>>On December 27, 2003 at 04:58:51, Mridul Muralidharan wrote: >>>> >>>>>4) Even with a 1:10 or 1:8 advantage crafty only barely manages to catch up or >>>>>beat these top order programs - so not much of a chance if they show up with the >>>>>above mentioned machines. >>>> >>>>I believe you are jumping to conclusions with "not much of a chance.." :) >>>> >>>>Crafty seems to be more than just barely holding on, it seems to be winning >>>>these matches at 8-10x speed advantage. >>>>That would mean Crafty still has chances even with "only" a 4x speed advantage. >>>> >>>>I'm not saying it would be a favorite but it's enough of a lottery to say that >>>>there are chances, and who knows what kind of hardware Bob could get his hands >>>>on ;) >>>> >>>>-S. >>>>>Mridul >>> >>>True - a good opening line which is favourale to crafty - and it could win even >>>with a 1 : 2 disadvantage :) >>>But it should be a good line - and this is like a jackpot - we cant count on >>>this ;) >>>On a even position - with lots of possibilities (not one of those dead drawn >>>boring opening lines) - it would be tougher. >>>If 1:8 just barely helps - then 1:4 is going to be a real challenge - also note >>>- it is going to be lower than 1:4 - not even 1:4 >>> >>>Mridul >> >>That's wrong. Pick your current box. I can _certainly_ find something that >>will be 4x faster than any box that showed up at the WCCC this year. And that >>is the reference point for this "test"... "would crafty be competitive." > >If they knew you'd show up they would also have got different hardware. :-D > >Sargon Not really, they all laugh loud. I had 250Ghz to my avail and got a good speedup at it (after some minor startup trouble first few rounds). Right now i'm calculating how much. It's already at > 100 right now. But the worst case being i guess now 80-100 speedup out of 460. The problem for Bob is he has a big mouth about big machines, but he knows very little about it. Actually, diep runs on most of those boxes and on all shared memory machines. Crafty however will already not work at a 4 processor node when latency is 2 microseconds to each node. Now let's discuss the 1Phz machine which he plans to get which is 4 times faster than the 512 processor origin i ran at :) Note the fastest machine i can imagine which Bob could arrange where crafty runs fine at is a 4 processor Opteron 2.0Ghz This is a great machine, but of course way slower than what some will show up with at Tel Aviv. Best regards, Vincent
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