Search found 1796 matches

by mar
Sun Aug 19, 2018 7:41 pm
Forum: Computer Chess Club: General Topics
Topic: Chess.com 2018 computer chess championship
Replies: 39
Views: 1993

Re: Chess.com 2018 computer chess championship

I'm quite familiar with hyperthreading. My concerns remain. :D Indeed, this shows the incompetence of the organizers by not understanding the difference between a logical and a physical core. I guess nobody even bothered to measure NPS ponder off vs ponder on (assuming running on the same machine),...
by mar
Sun Aug 19, 2018 7:45 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Lc0 strange results
Replies: 3
Views: 341

Re: Lc0 strange results

Werewolf wrote:
Sat Aug 18, 2018 8:10 pm
20 game match
What do you expect to get from 20 games except noise?
by mar
Sun Aug 12, 2018 10:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening book read speed
Replies: 17
Views: 534

Re: Opening book read speed

First of all, you don't have to read the whole book into memory, a waste of RAM and CPU resources, just as others pointed out already. Back to your (assume binary) book reader. A couple of things: 1) use unordered_map instead of map, I got 1.5x perf boost 2) in ReadBinary book you reconstruct the po...
by mar
Sat Aug 11, 2018 10:38 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4
Replies: 16
Views: 783

Re: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4

Actually Ted could have used less than 4 threads to feed his LC0 GPU. If you assume he has only 1 GPU, then 1 or 2 threads is very likely more than sufficient to keep it fully utilized. The point I'm trying to make is that with HT on, there are plenty of threads to run both programs simultaneously ...
by mar
Sat Aug 11, 2018 9:50 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4
Replies: 16
Views: 783

Re: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4

1.4x sounds like a speedup, not a slowdown...but no matter I have no idea where you got that number, or what it is. I can only speculate that you believe 1 physical core (HT off) is better or faster than 2 logical threads (HT on). But that's not true...talk to the power users on playchess, for ex.....
by mar
Sat Aug 11, 2018 8:57 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4
Replies: 16
Views: 783

Re: LC0 ver 0.16.0 ID 10520 vs Deep Shredder 13 x64 40/4

I'm quite sure that i7-4790 (being an Intel processor) ships with Hyperthreading 'on' That would be 4 physical cores (8 logical cores) meaning 8 threads Ted has carefully allocated 4 for LC0 and 4 for Shredder Where's the 'contention'?...other than with a couple users here who need to bully and cri...
by mar
Tue Jun 05, 2018 1:08 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Leela ID 243 vs tomitankChess 2.0 beta
Replies: 10
Views: 1346

Re: Leela ID 243 vs tomitankChess 2.0 beta

tomitank wrote:
Mon May 28, 2018 7:54 pm
How Much Elo is the 5x speed?
A consensus is 50 elo per doubling, but it really depends on time control. At very fast TC can be worth twice as much.
So log2(5)*50 = ~116, twice as much at bullet.
by mar
Tue Jun 05, 2018 1:02 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: MS acquires github??
Replies: 7
Views: 1279

Re: MS acquires github??

Microsoft is not known as a great proponent of free software. Of course not https://github.com/Microsoft VS code, type script, chakra core (their JS engine), .NET including their roslyn compiler and much more. VS supports Android, Linux and Mac targets including iOS, the community edition is free f...
by mar
Thu May 17, 2018 7:36 pm
Forum: Computer Chess Club: General Topics
Topic: LCZero: Progress and Scaling. Relation to CCRL Elo
Replies: 604
Views: 77352

Re: LCZero: Progress and Scaling. Relation to CCRL Elo

Reverting to an earlier version just because something went wrong is not smart. You're actually right - letting random people commit random stuff and changing random constants without testing is not smat but rather incompetent. Problems have been pointed out by Ronald, Alvaro and other people who a...