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Merged
merged 5 commits into from
Nov 27, 2024
Merged

⌛ Add node time management #1203

merged 5 commits into from
Nov 27, 2024

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eduherminio
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@eduherminio eduherminio commented Nov 26, 2024 •
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Node time management: scale soft limit time bound by the proportion of nodes spent searching the best move at root level vs the total nodes searched.
The more time spent in best move -> the more sure we are about our previous results, so the less time we spent in the search.
i.e. with nodeTmBase = 2 and nodeTmScale = 1

  • bestMoveFraction = 0.50 -> scale = 1.0 x (2 - 0.5) = 1.5
  • bestMoveFraction = 0.25 -> scale = 1.0 x (2 - 0.25) = 1.75
  • bestMoveFraction = 1.00 -> scale = 1.0 x (2 - 1.00) = 1
Test  | time/node-tm-2
Elo   | 3.59 +- 2.92 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | 2.90 (-2.25, 2.89) [0.00, 5.00]
Games | 25340: +7318 -7056 =10966
Penta | [692, 2963, 5130, 3161, 724]
https://openbench.lynx-chess.com/test/979/

Test  | time/node-tm-2
Elo   | 9.40 +- 5.79 (95%)
SPRT  | 16.0+0.16s Threads=1 Hash=32MB
LLR   | 2.91 (-2.25, 2.89) [0.00, 5.00]
Games | 5916: +1667 -1507 =2742
Penta | [113, 696, 1217, 782, 150]
https://openbench.lynx-chess.com/test/980/

Test  | time/node-tm-2
Elo   | 10.18 +- 5.93 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=128MB
LLR   | 2.91 (-2.25, 2.89) [0.00, 5.00]
Games | 5054: +1361 -1213 =2480
Penta | [87, 538, 1139, 666, 97]
https://openbench.lynx-chess.com/test/981/

@eduherminio eduherminio mentioned this pull request Nov 27, 2024
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@eduherminio eduherminio marked this pull request as ready for review November 27, 2024 09:02
@eduherminio eduherminio enabled auto-merge (squash) November 27, 2024 09:02
@eduherminio eduherminio merged commit ec5b19b into main Nov 27, 2024
27 checks passed
@eduherminio eduherminio deleted the time/node-tm-2 branch November 27, 2024 09:09
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