Search found 184 matches

by Javier Ros
Thu Jan 24, 2019 11:29 am
Forum: Computer Chess Club: General Topics
Topic: a test position that I composed
Replies: 13
Views: 2437

Re: a test position that I composed

With MultiPV it is more clear the evaluation of b6 and Kb2. FEN: 2k5/1pP5/p7/PP6/5B2/8/8/K4n2 w - - 0 1 AF125: 1/2 00:00 3 61 +3,19 1.Ka1-b2 a6xb5 1/2 00:00 3 61 +5,18 1.b5-b6 Kc8-d7 --------------------------------------------------------------------------- 2/4 00:00 9 118 +4,45 1.b5-b6 Kc8-d7 2.Ka...
by Javier Ros
Thu Jan 24, 2019 10:35 am
Forum: Computer Chess Club: General Topics
Topic: a test position that I composed
Replies: 13
Views: 2437

Re: a test position that I composed

White needs to move the king to win the game 2k5/1pP5/p7/PP6/5B2/8/8/K4n2 w - - 0 1 Very interesting test! See the analysis of Lc0_32472, 14 seconds !! on my Laptop with GTX1070 with only 5 men syzygy. And Lc0 AntiFish 125, less than one second!! Uri, with your outstanding experience in corresponde...
by Javier Ros
Sat Jan 19, 2019 9:31 am
Forum: Computer Chess Club: General Topics
Topic: Two GPUs
Replies: 11
Views: 2549

Re: Two GPUs

I am also thinking of setting up 2 GPU's for LC0. So is this code to be added to the .dll files? How do you get Leela to use both GPU's on CB GUI? Just install the UCI engine and add an edited .txt file? How about if you do setup in SLI, will LC0 consider 2 x GPU's as one GPU if SLI or Crossfire is...
by Javier Ros
Fri Jan 18, 2019 8:10 pm
Forum: Computer Chess Club: General Topics
Topic: Two GPUs
Replies: 11
Views: 2549

Re: Two GPUs

for use both GPU in Arena you must set: Backend: Multiplexing BackendOptions: (backend=cudnn,gpu=0),(backend=cudnn,gpu=1) For the RTX cards presumably it'd look like this: Backend: Multiplexing BackendOptions: (backend=cudnn-fp16,gpu=0),(backend=cudnn-fp16,gpu=1) Yes What is the difference in these...
by Javier Ros
Fri Jan 18, 2019 9:00 am
Forum: Computer Chess Club: General Topics
Topic: Two GPUs
Replies: 11
Views: 2549

Re: Two GPUs

Werewolf wrote:
Fri Jan 18, 2019 8:46 am
Javier Ros wrote:
Thu Jan 17, 2019 11:04 pm


for use both GPU in Arena you must set:

Backend: Multiplexing
BackendOptions: (backend=cudnn,gpu=0),(backend=cudnn,gpu=1)
For the RTX cards presumably it'd look like this:

Backend: Multiplexing
BackendOptions: (backend=cudnn-fp16,gpu=0),(backend=cudnn-fp16,gpu=1)
Yes
by Javier Ros
Fri Jan 18, 2019 7:58 am
Forum: Computer Chess Club: General Topics
Topic: King Solomon's position, again (Andscacs & Houdini)
Replies: 33
Views: 6640

Re: King Solomon's position, again (Andscacs & Houdini)

Here is a pv of King Solomon's position using a recent developmental version of Stockfish running for about 16 hours on my computer with an I9-7980XE processor (18 core): New game Line r5k1/1ppq1bp1/2n4r/1BBn1p2/p1NPp2p/P3P1P1/1PQ2P1P/2R3RK b - - 0 1 Analysis by Stockfish 140119 64 BMI2: 1...Bh5 2....
by Javier Ros
Thu Jan 17, 2019 11:04 pm
Forum: Computer Chess Club: General Topics
Topic: Two GPUs
Replies: 11
Views: 2549

Re: Two GPUs

Just trying an experiment with Lc0. To use two graphics cards, should they be set to run in SLI or independently? Thanks You must choose which GPU to use, or both, gpu=0 is for the first GPU and gpu=1 the second, for example in Cutechess -engine name="Lc0201_32644" cmd="lc0.exe" option.Threads=4 no...
by Javier Ros
Thu Jan 17, 2019 9:09 am
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 10937

Re: Can somebody explain what makes Leela as strong as Komodo?

Is it the Hardware speed or some breakthrough programming innovation? So far what is the score between Komodo and Leela ? https://www.youtube.com/watch?v=ymDA7-hdkKA My answer is a bit different than others. Leela (following AlphaZero) has found a way to use a powerful GPU for chess, which is itsel...
by Javier Ros
Wed Jan 16, 2019 11:28 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 with latest test30 nets is vastly superior positionally
Replies: 62
Views: 15842

Re: Lc0 with latest test30 nets is vastly superior positionally

Lc0 v20.1 ID32644: 756/1000 Lc0 v20.1 ID32458: 712/1000 Houdini 6.03: 558/1000 Komodo 12.3: 556/1000 Stockfish 10: 524/1000 Booot 6.3.1: 494/1000 Andscacs 0.95: 484/1000 Ethereal 11.00: 457/1000 Fire 7.1: 431/1000 Texel 1.07: 419/1000 ID32644 surpasses by huge margins any regular engine. I am prett...
by Javier Ros
Wed Jan 16, 2019 9:40 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 with latest test30 nets is vastly superior positionally
Replies: 62
Views: 15842

Re: Lc0 with latest test30 nets is vastly superior positionally

On my positional Openings200 test suite, largely based on databases of human games, I used Polyglot with particular settings, as engines like Lc0 and SF behave very differently in depth and such output. I used a setting whether from time/2 to time/1 engine sticks to the correct solution, as this se...