Steinar H. Gunderson
e56697e3f1
Merge commit 'b0287dcb1c436887075962b596cf2068d2ca9ba8' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 15:23:14 +01:00
Steinar H. Gunderson
125f4f3df0
Merge commit 'ed79745bb9e7207b604c62758ea45dd5c597ed8d' into cluster
2025-12-24 15:22:12 +01:00
Steinar H. Gunderson
ea9a328340
Merge commit 'c14b69790a62aad89fcc471cde482923dfe57f1e' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 15:17:55 +01:00
Steinar H. Gunderson
fb9a3d3323
Merge commit '2dbb44e28d2e5b3c72ddbbd6f436d41f75031a22' into cluster
2025-12-24 15:17:18 +01:00
Steinar H. Gunderson
649004ed47
Merge commit 'db147fe2586527a854516016699949af53dc5b17' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 15:14:23 +01:00
Steinar H. Gunderson
b7045f1bf6
Merge commit 'bc45cbc820a53a9fc405c06ca67bd7be3970344e' into cluster
2025-12-24 15:13:28 +01:00
Steinar H. Gunderson
5f5f991780
Merge commit '3502c8ae426506453ca64e87e48d962b327c2356' into cluster
2025-12-24 15:12:37 +01:00
Steinar H. Gunderson
ba47c8eeeb
Merge commit 'ddd250b9d655117920dd65a973cea2f8b3c57fce' into cluster
2025-12-24 15:03:08 +01:00
Steinar H. Gunderson
6b6279098d
Merge commit 'd47aa639bd614b37a59f87e6ab68496580f0cf3e' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 15:02:03 +01:00
Steinar H. Gunderson
2a1ed1267e
Merge commit 'd3fc1d835e5144cc98d6a7658fb8cfd9370792f1' into cluster
2025-12-24 14:37:41 +01:00
Steinar H. Gunderson
8e509e240a
Merge commit '432995ad82119070afa0bf720eb65d800bcbf817' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 13:57:03 +01:00
Steinar H. Gunderson
1b80a18fac
Merge commit '4912f5b0b5f2656bc5fcdb0af480765ad5aa8932' into cluster
2025-12-24 13:55:47 +01:00
Steinar H. Gunderson
ee41dc5c98
Merge commit '14f6eab07d1d1e1a59372974e5534128676e9440' into cluster
...
This is the last commit before there are more conflicts.
2025-12-24 13:51:24 +01:00
Steinar H. Gunderson
f0793a2080
Merge commit '9032c6cbe74ccf7e8963755501e7e6cc473ae471' into cluster
...
This is a rather involved merge, since the cluster changes interact
fairly badly with the refactoring we're merging:
The new code wants the search to know nothing at all about the UCI protocol,
it just calls a callback with some worker information (including a Position),
which then transforms that information into a InfoFull which is then sent
through another callback, upon which UCIEngine converts it to UCI and writes
it to stdout.
On the other hand, the MPI information wants to exchange PVs between workers
at this point, and it wants to use the UCI string as the primary medium of
exchange. Position is a lot of work to serialize, so we choose a middle road;
we capture the InfoFull by switching out the callback, serializes it, does the
MPI exchange on that, unserializes it and then continues with the print callback
(if there is new information).
2025-12-24 13:50:14 +01:00
Steinar H. Gunderson
a3cb287405
Merge commit '299707d2c2cbf1694bb21ed4a375b54ef35d719e' into cluster
2025-12-23 16:21:07 +01:00
Disservin and Joost VandeVondele
b0287dcb1c
apply const to prefetch parameter
...
closes https://github.com/official-stockfish/Stockfish/pull/5296
No functional change
2024-05-28 18:31:06 +02:00
FauziAkram and Joost VandeVondele
d0b9411b82
Tweak return value in futility pruning
...
Tweak the return value formula in futility pruning.
Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 60544 W: 15791 L: 15440 D: 29313
Ptnml(0-2): 193, 7024, 15520, 7309, 226
https://tests.stockfishchess.org/tests/view/6654ef22a86388d5e27db122
Passed LTC:
LLR: 2.96 (-2.94,2.94) <0.50,2.50>
Total: 126426 W: 32317 L: 31812 D: 62297
Ptnml(0-2): 55, 13871, 34869, 14350, 68
https://tests.stockfishchess.org/tests/view/66550644a86388d5e27db649
closes https://github.com/official-stockfish/Stockfish/pull/5295
bench: 1856147
2024-05-28 18:30:24 +02:00
Shawn Xu and Joost VandeVondele
5e98a4e43d
Simplify Away TT Cutoff Return Value Adjustments
...
Passed Non-regression STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 198432 W: 51161 L: 51119 D: 96152
Ptnml(0-2): 772, 23670, 50273, 23746, 755
https://tests.stockfishchess.org/tests/view/66517b9ea86388d5e27da966
Passed Non-regression LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 234150 W: 59200 L: 59197 D: 115753
Ptnml(0-2): 126, 26200, 64404, 26235, 110
https://tests.stockfishchess.org/tests/view/6653a84da86388d5e27daa63
closes https://github.com/official-stockfish/Stockfish/pull/5292
bench 1555200
2024-05-28 18:26:42 +02:00
Shahin M. Shahin and Disservin
8e1f273c7d
Remove rootDelta branch
...
This makes rootDelta logic easier to understand, recalculating the value
where it belongs so removes an unnecessary branch.
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/664fc147a86388d5e27d8d8e
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 206016 W: 53120 L: 53089 D: 99807
Ptnml(0-2): 591, 20928, 59888, 21061, 540
closes https://github.com/official-stockfish/Stockfish/pull/5289
No functional change
2024-05-26 20:32:41 +02:00
Linmiao Xu and Disservin
8bc3fd3871
Lower smallnet threshold with tuned eval params
...
The smallnet threshold is now below the training data range
of the current smallnet (simple eval diff > 1k, nn-baff1edelf90.nnue)
when no pawns are on the board.
Params found with spsa at 93k / 120k games at 60+06:
https://tests.stockfishchess.org/tests/view/664fa166a86388d5e27d7d6b
Tuned on top of: https://github.com/official-stockfish/Stockfish/pull/5287
Passed STC:
https://tests.stockfishchess.org/tests/view/664fc8b7a86388d5e27d8dac
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 64672 W: 16731 L: 16371 D: 31570
Ptnml(0-2): 239, 7463, 16517, 7933, 184
Passed LTC:
https://tests.stockfishchess.org/tests/view/664fd5f9a86388d5e27d8dfe
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 210648 W: 53489 L: 52813 D: 104346
Ptnml(0-2): 102, 23129, 58164, 23849, 80
closes https://github.com/official-stockfish/Stockfish/pull/5288
Bench: 1717838
2024-05-26 20:32:30 +02:00
Stéphane Nicolet and Disservin
4d876275cf
Simplify material weights in evaluation
...
This patch uses the same material weights for the nnue
amplification term and the optimism term in evaluate().
STC:
LLR: 2.99 (-2.94,2.94) <-1.75,0.25>
Total: 83360 W: 21489 L: 21313 D: 40558
Ptnml(0-2): 303, 9934, 21056, 10058, 329
https://tests.stockfishchess.org/tests/view/664eee69928b1fb18de500d9
LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 192648 W: 48675 L: 48630 D: 95343
Ptnml(0-2): 82, 21484, 53161, 21501, 96
https://tests.stockfishchess.org/tests/view/664fa17aa86388d5e27d7d6e
closes https://github.com/official-stockfish/Stockfish/pull/5287
Bench: 1495602
2024-05-26 20:24:05 +02:00
Muzhen Gaming and Disservin
61acbfc7d3
VVLTC search tune
...
Parameters were tuned in 2 stages:
1. 127k games at VVLTC:
https://tests.stockfishchess.org/tests/view/6649f8dfb8fa20e74c39f52a .
2. 106k games at VVLTC:
https://tests.stockfishchess.org/tests/view/664bfb77830eb9f886615a9d .
Passed VVLTC 1st sprt:
https://tests.stockfishchess.org/tests/view/664e8dd9928b1fb18de4e410
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 20466 W: 5340 L: 5093 D: 10033
Ptnml(0-2): 0, 1796, 6397, 2037, 3
Passed VVLTC 2nd sprt:
https://tests.stockfishchess.org/tests/view/664eb4aa928b1fb18de4e47d
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 15854 W: 4186 L: 3934 D: 7734
Ptnml(0-2): 1, 1367, 4938, 1621, 0
closes https://github.com/official-stockfish/Stockfish/pull/5286
Bench: 1558110
2024-05-23 21:37:46 +02:00
Linmiao Xu and Disservin
365aa85dce
Remove material imbalance param when adjusting optimism
...
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/664d033d830eb9f886616aff
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 102144 W: 26283 L: 26135 D: 49726
Ptnml(0-2): 292, 12201, 25991, 12243, 345
Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/664d5c00830eb9f886616cb3
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 250032 W: 63022 L: 63036 D: 123974
Ptnml(0-2): 103, 27941, 68970, 27871, 131
closes https://github.com/official-stockfish/Stockfish/pull/5284
Bench: 1330940
2024-05-23 21:37:46 +02:00
Muzhen Gaming and Disservin
72a345873d
Revert "Reduce When TTValue is Above Alpha"
...
The patch regressed significantly at longer time controls. In
particular, the `depth--` behavior was predicted to scale badly based on
data from other variations of the patch.
Passed VVLTC 1st sprt:
https://tests.stockfishchess.org/tests/view/664d45cf830eb9f886616c7d
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 51292 W: 13242 L: 12954 D: 25096
Ptnml(0-2): 5, 4724, 15896, 5020, 1
Passed VVLTC 2nd sprt:
https://tests.stockfishchess.org/tests/view/664e641a928b1fb18de4e385
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 41884 W: 10933 L: 10634 D: 20317
Ptnml(0-2): 1, 3759, 13125, 4054, 3
closes https://github.com/official-stockfish/Stockfish/pull/5283
Bench: 1503815
2024-05-23 21:37:46 +02:00
cj5716 and Disservin
c6a1e7fd42
Optimise pairwise multiplication
...
This speedup was first inspired by a comment by @AndyGrant on my recent
PR "If mullo_epi16 would preserve the signedness, then this could be
used to remove 50% of the max operations during the halfkp-pairwise
mat-mul relu deal."
That got me thinking, because although mullo_epi16 did not preserve the
signedness, mulhi_epi16 did, and so we could shift left and then use
mulhi_epi16, instead of shifting right after the mullo.
However, due to some issues with shifting into the sign bit, the FT
weights and biases had to be multiplied by 2 for the optimisation to
work.
Speedup on "Arch=x86-64-bmi2 COMP=clang", courtesy of @Torom
Result of 50 runs
base (...es/stockfish) = 962946 +/- 1202
test (...ise-max-less) = 979696 +/- 1084
diff = +16750 +/- 1794
speedup = +0.0174
P(speedup > 0) = 1.0000
CPU: 4 x Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Hyperthreading: on
Also a speedup on "COMP=gcc", courtesy of Torom once again
Result of 50 runs
base (...tockfish_gcc) = 966033 +/- 1574
test (...max-less_gcc) = 983319 +/- 1513
diff = +17286 +/- 2515
speedup = +0.0179
P(speedup > 0) = 1.0000
CPU: 4 x Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Hyperthreading: on
Passed STC:
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 67712 W: 17715 L: 17358 D: 32639
Ptnml(0-2): 225, 7472, 18140, 7759, 260
https://tests.stockfishchess.org/tests/view/664c1d75830eb9f886616906
closes https://github.com/official-stockfish/Stockfish/pull/5282
No functional change
2024-05-23 21:37:46 +02:00
Shawn Xu and Disservin
c39b98b9e3
Simplify Away History Updates in Multicut
...
Passed Non-regression STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 44896 W: 11600 L: 11388 D: 21908
Ptnml(0-2): 140, 5230, 11532, 5370, 176
https://tests.stockfishchess.org/tests/view/664cee31830eb9f886616a80
Passed Non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 56832 W: 14421 L: 14234 D: 28177
Ptnml(0-2): 37, 6251, 15643, 6458, 27
https://tests.stockfishchess.org/tests/view/664cfd4e830eb9f886616aa6
closes https://github.com/official-stockfish/Stockfish/pull/5281
Bench: 1119412
2024-05-23 21:30:33 +02:00
Linmiao Xu and Disservin
1dcffa6210
Comment about re-evaluating positions
...
While the smallNet bool is no longer used as of now,
setting it to false upon re-evaluation represents the
correct eval state.
closes https://github.com/official-stockfish/Stockfish/pull/5279
No functional change
2024-05-23 21:30:24 +02:00
Viren6 and Disservin
6db47ed71a
Addition of new scaling comments
...
This patch is intended to prevent patches like 9b90cd8e3c9ed7https://tests.stockfishchess.org/tests/view/6647b19f6dcff0d1d6b05d52
Elo: 4.28 ± 0.8 (95%) LOS: 100.0%
Total: 200000 W: 52555 L: 50094 D: 97351
Ptnml(0-2): 573, 22628, 51248, 24867, 684
nElo: 8.35 ± 1.5 (95%) PairsRatio: 1.10
VLTC: https://tests.stockfishchess.org/tests/view/6647b1b06dcff0d1d6b05d54
Elo: -1.48 ± 1.0 (95%) LOS: 0.2%
Total: 100000 W: 25009 L: 25436 D: 49555
Ptnml(0-2): 11, 10716, 28971, 10293, 9
nElo: -3.23 ± 2.2 (95%) PairsRatio: 0.96
The else if condition is moved to the non scaling section based on:
https://tests.stockfishchess.org/tests/view/664567a193ce6da3e93b3232 (It
has no proven scaling)
General comment improvements and removal of a redundant margin condition
have also been included.
closes https://github.com/official-stockfish/Stockfish/pull/5266
No functional change
2024-05-23 21:29:36 +02:00
Dubslow and Disservin
ed79745bb9
Improve comments about DEPTH constants
...
Also "fix" movepicker to allow depths between CHECKS and NO_CHECKS,
which makes them easier to tweak (not that they get tweaked hardly ever)
(This was more beneficial when there was a third stage to DEPTH_QS, but
it's still an improvement now)
closes https://github.com/official-stockfish/Stockfish/pull/5205
No functional change
2024-05-23 21:29:11 +02:00
Linmiao Xu and Joost VandeVondele
c14b69790a
Lower smallnet threshold with updated eval divisors
...
Params found after 30k spsa games at 60+0.6, with initial
values from 64k spsa games at 45+0.45
First spsa with 64k / 120k games at 45+0.45:
https://tests.stockfishchess.org/tests/view/664a561b5fc7b70b8817c663
https://tests.stockfishchess.org/tests/view/664ae88e830eb9f8866146f9
Second spsa with 30k / 120k games at 60+0.6:
https://tests.stockfishchess.org/tests/view/664be227830eb9f886615a36
Values found at 10k games at 60+0.6 also passed STC and LTC:
https://tests.stockfishchess.org/tests/view/664bf4bd830eb9f886615a72
https://tests.stockfishchess.org/tests/view/664c0905830eb9f886615abf
Passed STC:
https://tests.stockfishchess.org/tests/view/664c139e830eb9f886615af2
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 69408 W: 18216 L: 17842 D: 33350
Ptnml(0-2): 257, 8275, 17401, 8379, 392
Passed LTC:
https://tests.stockfishchess.org/tests/view/664cdaf7830eb9f886616a24
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 35466 W: 9075 L: 8758 D: 17633
Ptnml(0-2): 27, 3783, 9794, 4104, 25
closes https://github.com/official-stockfish/Stockfish/pull/5280
bench 1301287
2024-05-21 22:06:17 +02:00
MinetaS and Joost VandeVondele
c86ec8ec29
Remove cutoffCnt margin adjustment in razoring
...
Passed non-regression STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 65344 W: 16767 L: 16578 D: 31999
Ptnml(0-2): 198, 7557, 16987, 7718, 212
https://tests.stockfishchess.org/tests/view/664bd895830eb9f886615a26
Passed non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 35214 W: 8999 L: 8791 D: 17424
Ptnml(0-2): 16, 3804, 9760, 4010, 17
https://tests.stockfishchess.org/tests/view/664bead5830eb9f886615a52
closes https://github.com/official-stockfish/Stockfish/pull/5278
Bench: 1296223
2024-05-21 08:46:12 +02:00
FauziAkram and Joost VandeVondele
87bad0c38a
Refine Evaluation Scaling with Piece-Specific Weights
...
Refine Evaluation Scaling with Piece-Specific Weights, instead of the simplified npm method.
I took the initial idea from Viren6 , as he worked on it in September of last year.
I worked on it, and tuned it, and now it passed both tests.
Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 95712 W: 24731 L: 24325 D: 46656
Ptnml(0-2): 363, 11152, 24357, 11684, 300
https://tests.stockfishchess.org/tests/view/664b5493830eb9f886614af3
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 204480 W: 52167 L: 51501 D: 100812
Ptnml(0-2): 114, 22579, 56166, 23289, 92
https://tests.stockfishchess.org/tests/view/664b75dd830eb9f886614b44
closes https://github.com/official-stockfish/Stockfish/pull/5277
Bench: 1384337
2024-05-21 08:44:59 +02:00
Shawn Xu and Joost VandeVondele
f27a9be29c
Reduce When TTValue is Above Alpha
...
Passed STC:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 53376 W: 13818 L: 13476 D: 26082
Ptnml(0-2): 156, 6212, 13626, 6522, 172
https://tests.stockfishchess.org/tests/view/664aa261830eb9f8866145e5
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 393444 W: 100096 L: 99042 D: 194306
Ptnml(0-2): 191, 43516, 108248, 44582, 185
https://tests.stockfishchess.org/tests/view/664ab54f830eb9f88661463c
closes https://github.com/official-stockfish/Stockfish/pull/5276
Bench: 1024562
2024-05-21 08:40:37 +02:00
Michael Chaly and Joost VandeVondele
daf9787de1
Rescale pawn history updates
...
This patch is somewhat of a continuation of recent pawn history gainers.
It makes pawn history updates after search twice smaller. Since on average they make pawn history more negative offset is changed to lower value to remain average value approximately the same.
https://tests.stockfishchess.org/tests/view/664b3af9830eb9f886614aab
Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 170464 W: 44239 L: 43724 D: 82501
Ptnml(0-2): 523, 20278, 43128, 20767, 536
Passed LTC against pending PR :
https://tests.stockfishchess.org/tests/view/664b8c58830eb9f886614b64
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 98178 W: 25015 L: 24569 D: 48594
Ptnml(0-2): 48, 10769, 27005, 11223, 44
closes https://github.com/official-stockfish/Stockfish/pull/5275
Bench: 1343175
2024-05-21 08:36:32 +02:00
FauziAkram and Joost VandeVondele
b8ccaf038a
Use same shuffling Constant for both nets
...
Passed STC:
https://tests.stockfishchess.org/tests/view/664a42b15fc7b70b8817aeef
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 87840 W: 22759 L: 22594 D: 42487
Ptnml(0-2): 335, 10351, 22324, 10634, 276
Passed LTC:
https://tests.stockfishchess.org/tests/view/664a46995fc7b70b8817af02
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 163122 W: 41443 L: 41367 D: 80312
Ptnml(0-2): 105, 18154, 44927, 18310, 65
closes https://github.com/official-stockfish/Stockfish/pull/5273
bench: 1190174
2024-05-21 08:27:16 +02:00
Michael Chaly and Joost VandeVondele
0c797367a3
Update correction history in case of successful null move pruning
...
Since null move pruning uses the same position it makes some sense to try to update correction history there in case of fail high.
Update value is 4 times less than normal update.
Passed STC:
https://tests.stockfishchess.org/tests/view/664a011cae57c1758ac5b4dd
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 419360 W: 108390 L: 107505 D: 203465
Ptnml(0-2): 1416, 49603, 106724, 50554, 1383
Passed LTC:
https://tests.stockfishchess.org/tests/view/664a53d95fc7b70b8817c65b
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 193518 W: 49076 L: 48434 D: 96008
Ptnml(0-2): 89, 21335, 53263, 21989, 83
closes https://github.com/official-stockfish/Stockfish/pull/5272
bench 1301487
2024-05-21 08:17:20 +02:00
Linmiao Xu and Joost VandeVondele
4d88a63e60
Re-eval only if smallnet output flips from simple eval
...
Recent attempts to change the smallnet nnue re-eval
threshold did not show much elo difference:
https://tests.stockfishchess.org/tests/view/664a29bb25a9058c4d21d53c
https://tests.stockfishchess.org/tests/view/664a299925a9058c4d21d53a
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/664a3ea95fc7b70b8817aee2
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 22304 W: 5905 L: 5664 D: 10735
Ptnml(0-2): 67, 2602, 5603, 2783, 97
Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/664a43d35fc7b70b8817aef4
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 37536 W: 9667 L: 9460 D: 18409
Ptnml(0-2): 25, 4090, 10321, 4317, 15
closes https://github.com/official-stockfish/Stockfish/pull/5271
bench 1287409
2024-05-21 08:13:25 +02:00
Stefan Geschwentner and Joost VandeVondele
81e21a69f0
Simplify the recently introduced ply-based cmh bonus factor.
...
Replace it with a constant which is an approximation of the limit of the factor.
STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 120064 W: 30967 L: 30836 D: 58261
Ptnml(0-2): 421, 14238, 30608, 14319, 446
https://tests.stockfishchess.org/tests/view/6649d146b8fa20e74c39f4ad
LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 53856 W: 13719 L: 13530 D: 26607
Ptnml(0-2): 31, 5879, 14922, 6062, 34
https://tests.stockfishchess.org/tests/view/664a027fae57c1758ac5b4ee
closes https://github.com/official-stockfish/Stockfish/pull/5270
Bench: 1355618
2024-05-21 08:11:17 +02:00
Michael Chaly and Joost VandeVondele
4a66a7c9ca
Do more aggressive pawn history updates
...
Tweak of recent patch that made pawn history to update for move that caused a fail low - and setting up default value of it to -900. This patch makes it more aggressive - twice bigger updates and default value -1100.
Passed STC:
https://tests.stockfishchess.org/tests/view/6648c5d4308cceea45533b5d
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 235200 W: 61090 L: 60476 D: 113634
Ptnml(0-2): 763, 27952, 59651, 28376, 858
Passed LTC:
https://tests.stockfishchess.org/tests/view/664a1008ae57c1758ac5b523
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 20076 W: 5193 L: 4908 D: 9975
Ptnml(0-2): 7, 2105, 5534, 2380, 12
closes https://github.com/official-stockfish/Stockfish/pull/5268
Bench: 1590474
2024-05-21 08:07:22 +02:00
Stefan Geschwentner and Joost VandeVondele
a3bb7e626d
Tweak continuation history bonus dependent on ply.
...
This patch is based on following tuning https://tests.stockfishchess.org/tests/view/6648b2eb308cceea45533abe by only using the tuned factors for the continuation history.
Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 99904 W: 25865 L: 25457 D: 48582
Ptnml(0-2): 281, 11705, 25578, 12101, 287
https://tests.stockfishchess.org/tests/view/6648c136308cceea45533af8
Passed LTC:
LLR: 2.96 (-2.94,2.94) <0.50,2.50>
Total: 36402 W: 9362 L: 9039 D: 18001
Ptnml(0-2): 20, 3952, 9951, 4241, 37
https://tests.stockfishchess.org/tests/view/6648ee3cb8fa20e74c39f3fd
closes https://github.com/official-stockfish/Stockfish/pull/5267
Bench: 1917762
2024-05-21 08:04:44 +02:00
cj5716 and Joost VandeVondele
27eb49a221
Simplify ClippedReLU
...
Removes some max calls
Some speedup stats, courtesy of @AndyGrant (albeit measured in an alternate implementation)
Dev 749240 nps
Base 748495 nps
Gain 0.100%
289936 games
STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 203040 W: 52213 L: 52179 D: 98648
Ptnml(0-2): 480, 20722, 59139, 20642, 537
https://tests.stockfishchess.org/tests/view/664805fe6dcff0d1d6b05f2c
closes #5261
No functional change
2024-05-21 07:58:16 +02:00
2d32581623
Revert "Simplify Away Quadruple Extensions"
...
This reverts commit 4edd1a3https://github.com/official-stockfish/Stockfish/pull/5265
bench 1404295
Co-Authored-By: Michael Chaly <26898827+Vizvezdenec@users.noreply.github.com >
2024-05-19 09:37:22 +02:00
Muzhen Gaming and Joost VandeVondele
99f1bacfd6
VVLTC search tune
...
Tuned with 85k games at VVLTC.
VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/6648b836308cceea45533ad7
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 14880 W: 3890 L: 3652 D: 7338
Ptnml(0-2): 0, 1255, 4694, 1489, 2
VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/6648c34f308cceea45533b4f
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 24984 W: 6502 L: 6235 D: 12247
Ptnml(0-2): 1, 2178, 7867, 2445, 1
closes https://github.com/official-stockfish/Stockfish/pull/5264
Bench: 1198142
2024-05-18 18:09:45 +02:00
Linmiao Xu and Joost VandeVondele
2694fce928
Simplify away adjustEval lambda
...
Now that only the shuffling constant differs between nets,
a lambda for adjusting eval is no longer needed.
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/664806ca6dcff0d1d6b05f34
LLR: 2.99 (-2.94,2.94) <-1.75,0.25>
Total: 31552 W: 8175 L: 7959 D: 15418
Ptnml(0-2): 76, 3180, 9065, 3362, 93
closes https://github.com/official-stockfish/Stockfish/pull/5260
No functional change
2024-05-18 18:08:39 +02:00
Shawn Xu and Joost VandeVondele
4edd1a389e
Simplify Away Quadruple Extensions
...
serendipitous gainer
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 95472 W: 24176 L: 24031 D: 47265
Ptnml(0-2): 52, 10533, 26414, 10692, 45
https://tests.stockfishchess.org/tests/live_elo/6647fa596dcff0d1d6b05efa
Passed VVLTC 70+7 th 7:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 6772 W: 1793 L: 1583 D: 3396
Ptnml(0-2): 0, 502, 2172, 712, 0
https://tests.stockfishchess.org/tests/live_elo/6648277a6dcff0d1d6b05ffb
Passed VVLTC 70+7 th 7 (2x):
https://tests.stockfishchess.org/tests/view/66484c896dcff0d1d6b0619d
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 5424 W: 1469 L: 1254 D: 2701
Ptnml(0-2): 0, 394, 1710, 607, 1
closes https://github.com/official-stockfish/Stockfish/pull/5259
Bench: 1441794
2024-05-18 09:32:21 +02:00
Linmiao Xu and Joost VandeVondele
99dfc63e03
Use one nnue pawn count multiplier
...
Switch to the value used by the main net.
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/6647e8096dcff0d1d6b05e96
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 51040 W: 13249 L: 13044 D: 24747
Ptnml(0-2): 139, 6029, 13016, 6160, 176
Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/6647f4a46dcff0d1d6b05eea
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 20460 W: 5195 L: 4972 D: 10293
Ptnml(0-2): 8, 2178, 5637, 2397, 10
https://github.com/official-stockfish/Stockfish/pull/5258
bench 1887462
2024-05-18 09:29:26 +02:00
Shawn Xu and Joost VandeVondele
285f1d2a66
Tweak NMP Formula
...
Passed STC:
LLR: 2.99 (-2.94,2.94) <0.00,2.00>
Total: 241728 W: 62440 L: 61811 D: 117477
Ptnml(0-2): 914, 28467, 61458, 29126, 899
https://tests.stockfishchess.org/tests/live_elo/6645992993ce6da3e93b5b99
Passed LTC:
LLR: 2.96 (-2.94,2.94) <0.50,2.50>
Total: 167850 W: 42620 L: 42030 D: 83200
Ptnml(0-2): 82, 18412, 46354, 18988, 89
https://tests.stockfishchess.org/tests/live_elo/6647c5726dcff0d1d6b05dd3
closes https://github.com/official-stockfish/Stockfish/pull/5257
Bench: 1636018
2024-05-18 09:26:42 +02:00
FauziAkram and Joost VandeVondele
f5e15441b8
Early Exit in Bitboards::sliding_attack()
...
he original code checks for occupancy within the loop condition. By moving this check inside the loop and adding an early exit condition, we can avoid unnecessary iterations if a blocking piece is encountered.
Passed stc:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 127200 W: 33129 L: 32700 D: 61371
Ptnml(0-2): 424, 13243, 35826, 13694, 413
https://tests.stockfishchess.org/tests/view/664646006dcff0d1d6b05bca
closes https://github.com/official-stockfish/Stockfish/pull/5256
No functional change
2024-05-18 09:24:23 +02:00
Linmiao Xu and Joost VandeVondele
d92d1f3180
Move smallnet threshold logic into a function
...
Now that the smallnet threshold is no longer a constant,
use a function to organize it with other eval code.
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/66459fa093ce6da3e93b5ba2
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 217600 W: 56281 L: 56260 D: 105059
Ptnml(0-2): 756, 23787, 59729, 23736, 792
closes https://github.com/official-stockfish/Stockfish/pull/5255
No functional change
2024-05-18 09:21:00 +02:00
Linmiao Xu and Joost VandeVondele
1b7dea3f85
Update default main net to nn-c721dfca8cd3.nnue
...
Created by first retraining the spsa-tuned main net `nn-ae6a388e4a1a.nnue` with:
- using v6-dd data without bestmove captures removed
- addition of T80 mar2024 data
- increasing loss by 20% when Q is too high
- torch.compile changes for marginal training speed gains
And then SPSA tuning weights of epoch 899 following methods described in:
https://github.com/official-stockfish/Stockfish/pull/5149
This net was reached at 92k out of 120k steps in this 70+0.7 th 7 SPSA tuning run:
https://tests.stockfishchess.org/tests/view/66413b7df9f4e8fc783c9bbb
Thanks to @Viren6 for suggesting usage of:
- c value 4 for the weights
- c value 128 for the biases
Scripts for automating applying fishtest spsa params to exporting tuned .nnue are in:
https://github.com/linrock/nnue-tools/tree/master/spsa
Before spsa tuning, epoch 899 was nn-f85738aefa84.nnue
https://tests.stockfishchess.org/tests/view/663e5c893a2f9702074bc167
After initially training with max-epoch 800, training was resumed with max-epoch 1000.
```
experiment-name: 3072--S11--more-data-v6-dd-t80-mar2024--see-ge0-20p-more-loss-high-q-sk28-l8
nnue-pytorch-branch: linrock/nnue-pytorch/3072-r21-skip-more-wdl-see-ge0-20p-more-loss-high-q-torch-compile-more
start-from-engine-test-net: False
start-from-model: /data/config/apr2024-3072/nn-ae6a388e4a1a.nnue
early-fen-skipping: 28
training-dataset:
/data/S11-mar2024/:
- leela96.v2.min.binpack
- test60-2021-11-12-novdec-12tb7p.v6-dd.min.binpack
- test78-2022-01-to-05-jantomay-16tb7p.v6-dd.min.binpack
- test80-2022-06-jun-16tb7p.v6-dd.min.binpack
- test80-2022-08-aug-16tb7p.v6-dd.min.binpack
- test80-2022-09-sep-16tb7p.v6-dd.min.binpack
- test80-2023-01-jan-16tb7p.v6-sk20.min.binpack
- test80-2023-02-feb-16tb7p.v6-sk20.min.binpack
- test80-2023-03-mar-2tb7p.v6-sk16.min.binpack
- test80-2023-04-apr-2tb7p.v6-sk16.min.binpack
- test80-2023-05-may-2tb7p.v6.min.binpack
# https://github.com/official-stockfish/Stockfish/pull/4782
- test80-2023-06-jun-2tb7p.binpack
- test80-2023-07-jul-2tb7p.binpack
# https://github.com/official-stockfish/Stockfish/pull/4972
- test80-2023-08-aug-2tb7p.v6.min.binpack
- test80-2023-09-sep-2tb7p.binpack
- test80-2023-10-oct-2tb7p.binpack
# S9 new data: https://github.com/official-stockfish/Stockfish/pull/5056
- test80-2023-11-nov-2tb7p.binpack
- test80-2023-12-dec-2tb7p.binpack
# S10 new data: https://github.com/official-stockfish/Stockfish/pull/5149
- test80-2024-01-jan-2tb7p.binpack
- test80-2024-02-feb-2tb7p.binpack
# S11 new data
- test80-2024-03-mar-2tb7p.binpack
/data/filt-v6-dd/:
- test77-dec2021-16tb7p-filter-v6-dd.binpack
- test78-juntosep2022-16tb7p-filter-v6-dd.binpack
- test79-apr2022-16tb7p-filter-v6-dd.binpack
- test79-may2022-16tb7p-filter-v6-dd.binpack
- test80-jul2022-16tb7p-filter-v6-dd.binpack
- test80-oct2022-16tb7p-filter-v6-dd.binpack
- test80-nov2022-16tb7p-filter-v6-dd.binpack
num-epochs: 1000
lr: 4.375e-4
gamma: 0.995
start-lambda: 0.8
end-lambda: 0.7
```
Training data can be found at:
https://robotmoon.com/nnue-training-data/
Local elo at 25k nodes per move:
nn-epoch899.nnue : 4.6 +/- 1.4
Passed STC:
https://tests.stockfishchess.org/tests/view/6645454893ce6da3e93b31ae
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 95232 W: 24598 L: 24194 D: 46440
Ptnml(0-2): 294, 11215, 24180, 11647, 280
Passed LTC:
https://tests.stockfishchess.org/tests/view/6645522d93ce6da3e93b31df
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 320544 W: 81432 L: 80524 D: 158588
Ptnml(0-2): 164, 35659, 87696, 36611, 142
closes https://github.com/official-stockfish/Stockfish/pull/5254
bench 1995552
2024-05-18 09:19:10 +02:00
