Search found 42 matches

by grahamj
Fri Oct 19, 2018 8:19 am
Forum: Computer Chess Club: General Topics
Topic: What got you into computer chess?
Replies: 38
Views: 10447

Re: What got you into computer chess?

AlphaZero. I have a longstanding interest in machine learning, but little interest in chess except as a computational challenge. AlphaZero led to LC0 then to an interest in CUDA programming, and now I'm working on a chess engine which uses a GPU to do the last few plies of search. As I said to Srdja...
by grahamj
Thu Oct 18, 2018 12:04 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 speedup on 2 GPUs
Replies: 7
Views: 1937

Re: Lc0 speedup on 2 GPUs

As I understand it, LC0 sends a batch of positions to the GPU for NN evaluation. The default "Minibatch size for NN inference" is 256. If this is too small, the GPU will not be fully utilised. More powerful GPUs need bigger batches to keep them busy. If the batch size is too big, search becomes less...