Search found 2293 matches

by Modern Times
Thu Aug 16, 2012 9:53 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: Rule of thumb posted by Kai.

Of course they aren't normal CCRL ratings, they use Elostat's default 2400 start rating. The numbers come from a single pgn of just the K5 games.
by Modern Times
Thu Aug 16, 2012 9:30 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: Rule of thumb posted by Kai.

Well, for what it is worth, I ran just the Komodo 5 40/40 games through EloStat (because I'm not sure how to use bayeselo) with AMD and Intel separated out, and got this: Program Elo + - Games Score Av.Op. Draws Komodo 5 64-bit Intel Non-SSE : 2462 21 21 457 58.4 % 2403 56.5 % Komodo 5 64-bit AMD-SS...
by Modern Times
Thu Aug 16, 2012 2:12 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012).

But the assumption here is that the +50 Elo due to speed doubling (or whatever the number is) is a linear progression. I believe (but can't prove) that this is not true.
by Modern Times
Thu Aug 16, 2012 12:16 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

I agree George, as I said before if SSE4 gives even 5 Elo I would be surprised I've the number of "10% speed up" for SSE4 (mainly from the popcount instruction), that would mean +7 Elo. How many thousands of games do you need to prove (or disprove) a +7 Elo improvement ? And have we seen such a tes...
by Modern Times
Thu Aug 16, 2012 8:21 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

I agree George, as I said before if SSE4 gives even 5 Elo I would be surprised
by Modern Times
Thu Aug 16, 2012 6:56 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

Back to the SSE4 question - CEGT have confirmed that *all* their games were SSE4, so Larry's comment in the CEGT thread about the use of non-SSE hardware "This is starting to look like the main culprit, in CCRL as well. " is not entirely true However, CEGT used AMD X4, and it would be interesting to...
by Modern Times
Wed Aug 15, 2012 2:50 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

There are other fatal flaws in this line of reasoning: - doubling the speed of a 2800 engine say, will yield different gains from doubling the speed of a 2950 engine (law of diminishing returns) - a 90 Elo increase from doubling the speed may not be a linear progression . It could well be that a 7%...
by Modern Times
Wed Aug 15, 2012 1:34 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

2)90 elo increase from doubling the speed does not have to be linear but usually it is very close to be linear. I don't agree with that. I'd say it is anything but linear. The extra speed is most beneficial if it causes the engine to go deeper. If the engine is on the threshold of taking that next ...
by Modern Times
Wed Aug 15, 2012 9:03 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/4 lists updated (11th August 2012)
Replies: 86
Views: 11378

Re: CCRL 40/4 lists updated (11th August 2012)

There are other fatal flaws in this line of reasoning: - doubling the speed of a 2800 engine say, will yield different gains from doubling the speed of a 2950 engine (law of diminishing returns) - a 90 Elo increase from doubling the speed may not be a linear progression . It could well be that a 7% ...
by Modern Times
Wed Aug 15, 2012 8:48 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CEGT - rating lists August 12th 2012
Replies: 26
Views: 2644

Re: CEGT - rating lists August 12th 2012

All the Komodo 5 x64 games for the CEGT 40/4 were played by using SSE4.

Best wishes,
G.S.
(CEGT member)
Well now, that blows Larry's theory out of the water.