Search found 4987 matches

by Laskos
Wed Nov 18, 2020 11:30 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 4 x Intel Xeon good idea?
Replies: 23
Views: 742

Re: 4 x Intel Xeon good idea?

His claim is unsupported so unless proper tests demonstrate that the scaling efficiency actually got worse, I'd just assume it was rubbish. The proper measure of scaling efficiency of N threads is finding the time factor X needed so that 1-core with X*T time scores 50% against N-cores with T time. ...
by Laskos
Wed Nov 18, 2020 9:54 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 4 x Intel Xeon good idea?
Replies: 23
Views: 742

Re: 4 x Intel Xeon good idea?

His claim is unsupported so unless proper tests demonstrate that the scaling efficiency actually got worse, I'd just assume it was rubbish. The proper measure of scaling efficiency of N threads is finding the time factor X needed so that 1-core with X*T time scores 50% against N-cores with T time. ...
by Laskos
Wed Nov 18, 2020 9:23 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

My personal feeling: human computer era ended around 2005 when SMP Rybka was released. Handicap matches are not interesting. I would like to see non handicap games against GM's even if the engines win every game. Note that I am not sure that they can win every game with black and maybe humans can f...
by Laskos
Wed Nov 18, 2020 8:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 4 x Intel Xeon good idea?
Replies: 23
Views: 742

Re: 4 x Intel Xeon good idea?

If running parallel single-core games, the total nps is a good indication of the performance, but multi-threading is lossy. At equal overall nps, more threads plays weaker. The scaling efficiency from 12 (24) to 48 (96) threads is really poor, so matching or moderately beating the modern 12 cores i...
by Laskos
Wed Nov 18, 2020 8:05 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

My personal feeling: human computer era ended around 2005 when SMP Rybka was released. Handicap matches are not interesting. I would like to see non handicap games against GM's even if the engines win every game. Note that I am not sure that they can win every game with black and maybe humans can f...
by Laskos
Wed Nov 18, 2020 3:13 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

My personal feeling: human computer era ended around 2005 when SMP Rybka was released. Handicap matches are not interesting. I would like to see non handicap games against GM's even if the engines win every game. Note that I am not sure that they can win every game with black and maybe humans can f...
by Laskos
Wed Nov 18, 2020 12:35 am
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

Dragon vs. my son Ray was drawn 2 to 2 at knight odds, same tc as the Naka match. So if the difference in the odds offsets the strength difference between Naka and Ray, the Dragon vs Naka match should be close. It should be noted that standard Dragon lost 1.5 to 0.5 to Ray, while MCTS Dragon won by...
by Laskos
Tue Nov 17, 2020 10:02 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

Ray won the first game. Dragon played well enough to recover two pawns by the time the endgame was reached, but the endgame with two pawns for the bishop was still easily won for Ray. Knight odds is a lot. Game two underway. Is Ray allowed to play the best openings? I remember now that Knight odds ...
by Laskos
Tue Nov 17, 2020 9:40 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

What I've consistently observed is that humans always do better taking handicaps from top engines than similarly rated engines do. Maybe it's because they have a better understanding of simplifying when ahead, or just that they know to respect the opponent and avoid anything unclear. I have been se...
by Laskos
Tue Nov 17, 2020 8:54 pm
Forum: Computer Chess Club: General Topics
Topic: Dragon vs GM Nakamura Analog Handicap Match
Replies: 84
Views: 3106

Re: Dragon vs GM Nakamura Analog Handicap Match

What I've consistently observed is that humans always do better taking handicaps from top engines than similarly rated engines do. Maybe it's because they have a better understanding of simplifying when ahead, or just that they know to respect the opponent and avoid anything unclear. I have been se...