## Search found 62 matches

Thu May 03, 2018 2:21 am
Forum: Computer Chess Club: General Topics
Topic: LCZero Accomplishments and Goals Thus Far
Replies: 177
Views: 26961

### Re: LCZero Accomplishments and Goals Thus Far

Well, the search algorithm plays the move with the most visits. The initial visit is made to the move with the highest probability from the policy head. With a 1 visit "search", the search will evaluate the position after the move with the highest probability from the policy head, but no matter wha...
Thu May 03, 2018 12:44 am
Forum: Computer Chess Club: General Topics
Topic: LCZero Accomplishments and Goals Thus Far
Replies: 177
Views: 26961

### Re: LCZero Accomplishments and Goals Thus Far

Well, the search algorithm plays the move with the most visits. The initial visit is made to the move with the highest probability from the policy head. With a 1 visit "search", the search will evaluate the position after the move with the highest probability from the policy head, but no matter what...
Wed May 02, 2018 11:38 pm
Forum: Computer Chess Club: General Topics
Topic: LCZero Accomplishments and Goals Thus Far
Replies: 177
Views: 26961

### Re: LCZero Accomplishments and Goals Thus Far

For me it's exciting but it's not that incredible as I was following Leela Zero in go and something similar happened there. I like playing against pure policy networks (1 playout, no search) , it's a lot of fun in both chess and go. In go pure network is already around 3-4 dan level which would cor...
Tue May 01, 2018 8:30 pm
Forum: Computer Chess Club: General Topics
Topic: Elo/source-code meter
Replies: 14
Views: 2106

### Re: Elo/source-code meter

Should probably slightly change the original calculation. It's taking the expected score of Engine A vs Engine B, then doing 1/expected score to show much better Engine B is. When Engine A and Engine B have the same rating, that would output that each engine is twice as good as the other :) If you m...
Tue May 01, 2018 8:21 pm
Forum: Computer Chess Club: General Topics
Topic: Leela on more then one GPU??
Replies: 1
Views: 589

### Re: Leela on more then one GPU??

Yes, Leela supports multiple GPUs. You just pass multiple --gpu <OpenCL ID> parameters to the engine. I've tested that this works on 8 K80s (although I didn't have enough CPU to fully utilize all those GPUs, at 1 thread per GPU NPS scaled linearly; I just couldn't drive GPU utilization much past 50%...
Fri Apr 27, 2018 6:28 pm
Forum: Computer Chess Club: General Topics
Topic: 2 open projects
Replies: 43
Views: 7454

### Re: 2 open projects

A0 after 10 millions training games already (allegedly because there is no proof beside that Google advertising leaflet) surpassed SF8. I'm all for keeping a grounded view of expectations, but let's at least get the math right. 44 million games in 9 hours = ~4.888 million games/hour From the paper:...
Fri Apr 20, 2018 8:50 pm
Forum: Computer Chess Club: General Topics
Topic: LCzero sacs a knight for nothing
Replies: 106
Views: 17005

### Re: LCzero sacs a knight for nothing

I suspect the averaging of scores is responsible for this blunder. When a position has a few good moves and the policy network fails to pick them, these things can happen. It's the second thing you mentioned, not the first. I ran a few times the same position to similar visit counts as what were se...
Sat Apr 14, 2018 2:30 am
Forum: Computer Chess Club: General Topics
Topic: Leela network questions
Replies: 7
Views: 1734

### Re: Leela network questions

Full tuning is only for the GPU version.

Cheers!
Fri Apr 13, 2018 6:23 pm
Forum: Computer Chess Club: General Topics
Topic: lczero faq
Replies: 6
Views: 1882

### Re: lczero faq

It doesn't take longer just because the network gets better. It's slower now because the network size was recently increased substantially. A larger network means evaluating the network is more computationally expensive (essentially, the NN is just a giant set of math operations, and now there are a...
Fri Apr 13, 2018 4:16 pm
Forum: Computer Chess Club: General Topics
Topic: LCZero Elo
Replies: 34
Views: 7122

### Re: LCZero Elo

In normal rating lists, a common book is used to generate diverse starting positions; engines don't use proprietary own books or anything like that. LC0 can do that just fine, so I'm not sure what the issue is there :) Again, at any rate, literally the only point of my post was that it's completely ...