Search found 756 matches

by Joerg Oster
Sun Aug 09, 2020 12:12 pm
Forum: Computer Chess Club: General Topics
Topic: this will be the merge of a lifetime : SF 80 Elo+
Replies: 115
Views: 7290

Re: this will be the merge of a lifetime : SF 80 Elo+

It is especially in unbalanced positions where classic eval seems to lack some knowledge, at least that was my impression from many examples given in the past. I suppose any gains from using the classic eval come solely from the time saving. This suggests that any simplification of the classic eval...
by Joerg Oster
Sun Aug 09, 2020 11:20 am
Forum: Computer Chess Club: General Topics
Topic: this will be the merge of a lifetime : SF 80 Elo+
Replies: 115
Views: 7290

Re: this will be the merge of a lifetime : SF 80 Elo+

However this change can never yield stronger analysis. Doesn't this statement assume that the classical evaluation is at least as good as the NNUE evaluation in "unbalanced" positions? That is, for positions for which abs(eg_value(pos.psq_score())) is at least 520? (Note that the criterion for Stoc...
by Joerg Oster
Sat Aug 08, 2020 2:20 pm
Forum: Computer Chess Club: General Topics
Topic: this will be the merge of a lifetime : SF 80 Elo+
Replies: 115
Views: 7290

Re: When to check NNUE box

"The idea is to use NNUE only on quite balanced material positions." This was based on the fact that SF-NNUE searches much more slowly than classic SF on most hardware. But if one has fast hardware, so that SF-NNUE runs fast enough, then why not always use SF-NNUE? How is stockfish defining 'quite ...
by Joerg Oster
Sat Aug 08, 2020 11:00 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Idea #13 [experiment]
Replies: 14
Views: 767

Re: Idea #13 [experiment]

There is no tuning, just a raw statistic from a large quality PGN, not suited for evaluation. Code: for each move : pst[piece_type][square_from]--; pst[piece_type][square_to]++; That's basically all there is except handling a few side effects . How is this possible then? A white pawn on d2, for exa...
by Joerg Oster
Sat Aug 08, 2020 9:59 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Idea #13 [experiment]
Replies: 14
Views: 767

Re: Idea #13 [experiment]

There is no tuning, just a raw statistic from a large quality PGN, not suited for evaluation. Code: for each move : pst[piece_type][square_from]--; pst[piece_type][square_to]++; That's basically all there is except handling a few side effects. How is this possible then? A white pawn on d2, for exam...
by Joerg Oster
Fri Aug 07, 2020 9:28 am
Forum: Computer Chess Club: General Topics
Topic: this will be the merge of a lifetime : SF 80 Elo+
Replies: 115
Views: 7290

Re: this will be the merge of a lifetime : SF 80 Elo+

https://tests.stockfishchess.org/tests/view/5f290229a5abc164f05e4c58 I think this qualifies for SF 12!! Using an unbalanced opening book built from 2moves_v1 to decrease the draw rate, I am getting about 150 Elo points advantage of the best SV nets and latest SF compile over SF_dev at 15s + 0.25s t...
by Joerg Oster
Fri Aug 07, 2020 8:53 am
Forum: Computer Chess Club: General Topics
Topic: this will be the merge of a lifetime : SF 80 Elo+
Replies: 115
Views: 7290

Re: this will be the merge of a lifetime : SF 80 Elo+

https://tests.stockfishchess.org/tests/view/5f290229a5abc164f05e4c58 I think this qualifies for SF 12!! Using an unbalanced opening book built from 2moves_v1 to decrease the draw rate, I am getting about 150 Elo points advantage of the best SV nets and latest SF compile over SF_dev at 15s + 0.25s t...
by Joerg Oster
Sat Aug 01, 2020 10:04 am
Forum: Computer Chess Club: General Topics
Topic: SF-NNUE - failed to store learned nn.bin
Replies: 7
Views: 509

Re: SF-NNUE - failed to store learned nn.bin

Just cut-and-pasted the Readme commands - without understanding. See below. So ... eval_save_interval 250000000 Perhaps then did not have enough data for eval_save to be triggered. Loop=1M and validation 100k as a quick test "gensfen depth 2 loop 1000000 use_draw_in_training_data_generation 1 eval_...
by Joerg Oster
Sat Aug 01, 2020 8:27 am
Forum: Computer Chess Club: General Topics
Topic: SF-NNUE - failed to store learned nn.bin
Replies: 7
Views: 509

Re: SF-NNUE - failed to store learned nn.bin

Thanks for replying. Nothing written anyway, as far as I can tell. Repeated the process with the same result. No idea what I am doing. Just following the readme receipe, so perhaps not a surprising result :) How large did you choose 'eval_save_interval'? Did you ever see a message like save_eval() ...
by Joerg Oster
Wed Jul 29, 2020 12:56 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 vs. NNUE - some tech details...
Replies: 17
Views: 1743

Re: LC0 vs. NNUE - some tech details...

I wonder when we will see the first MCTS-like searchers using a NNUE. Probably the Komodo guys are already working on it ... :) Am I right that "real" MCTS- search would work better on CPU too? I mean unlike the kind of search LC0 does? Lc0's search IS running on CPU, so not sure what you mean exac...