Search found 16848 matches

by bob
Thu Jan 23, 2020 3:34 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Hyatt 4000 openings
Replies: 7
Views: 532

Re: Hyatt 4000 openings

We actually left in a few "polarized" positions. Nice to see if a program can win a "won" position every now and then, and then see how well it can defend the same position. Lots of tests showed those "polar" results ending up 1.5 - 0.5, which is useful data, so long as they don't overwhelm the rest...
by bob
Thu Jan 23, 2020 3:31 am
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 52
Views: 5081

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

How far it is above Crafty really doesn't affect my comments. 2K nodes per second is not going to beat a GM. Might not beat a master, since most of the speculative pruning stuff really needs exceptional search depth to bypass the holes it causes. 1 second per move vs 180 seconds per move? Maybe. Bu...
by bob
Sun Jan 19, 2020 7:38 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 11 at 120k nodes per move
Replies: 22
Views: 1579

Re: Stockfish 11 at 120k nodes per move

Jeroen has a bunch of opening collections that should work just fine for such a test. However, the thread has devolved into multiple different ideas. 100nps is a different thing from 100 nodes total. Just as is 2K or 5K total nodes much different from 2K to 5K nodes per second. All of the different ...
by bob
Fri Jan 17, 2020 6:47 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 11 at 120k nodes per move
Replies: 22
Views: 1579

Re: Stockfish 11 at 120k nodes per move

Except that processor is irrelevant in a fixed node search. Or did I misunderstand your comment?
by bob
Fri Jan 17, 2020 5:17 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 11 at 120k nodes per move
Replies: 22
Views: 1579

Re: Stockfish 11 at 120k nodes per move

OK, first, I assume that Komodo was not pondering? If that is wrong, then this brings the entire match into question since ponder hits would search FAR more nodes than when having to think on own time at a 30:1 handicap. So the obvious first question = ponder off? Next, the published ratings everywh...
by bob
Fri Jan 17, 2020 5:21 am
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 52
Views: 5081

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

How far it is above Crafty really doesn't affect my comments. 2K nodes per second is not going to beat a GM. Might not beat a master, since most of the speculative pruning stuff really needs exceptional search depth to bypass the holes it causes. 1 second per move vs 180 seconds per move? Maybe. Bu...
by bob
Thu Jan 16, 2020 6:21 pm
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 52
Views: 5081

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

How far it is above Crafty really doesn't affect my comments. 2K nodes per second is not going to beat a GM. Might not beat a master, since most of the speculative pruning stuff really needs exceptional search depth to bypass the holes it causes. 1 second per move vs 180 seconds per move? Maybe. But...
by bob
Wed Jan 15, 2020 6:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: NUMA
Replies: 7
Views: 852

Re: NUMA

There are some things you can do. First, if you want to join at node X, how many moves have ALREADY been searched there? Only one? You can't tell if this is a CUT or an ALL node. Look for one where more moves have been searched, suggesting that all will have to be searched. You can also (in a DTS fr...
by bob
Wed Jan 15, 2020 6:17 pm
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 52
Views: 5081

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

Surpassing Deep Blue's 200 Million nps. But 22 years later... But now, Stockfish at 1 Mn/s is stronger than Deep Blue at 200 Mn/s. 8-) Stockfish at 1 kn/s is stronger than Deep Blue. Is it? I’m not sure that’s right Stockfish should be GM level even at 100 n/s classical time control. Probably 0.5 k...
by bob
Wed Jan 15, 2020 5:55 pm
Forum: Computer Chess Club: General Topics
Topic: win at chess #223
Replies: 9
Views: 656

Re: win at chess #223

I am assuming he is using a broad brush and talking about the entire test set from the book.