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Permute master net weights to increase sparsity
Activation data collection using ac468039ab
run as
bench 16 1 13 varied_1000.epd depth NNUE log.bin
on FENs from https://gist.github.com/AndrovT/7eae6918eb50764227e2bafe7938953c.
Permutation found using https://gist.github.com/AndrovT/359c831b7223c637e9156b01eb96949e.
Uses a greedy algorithm that goes sequentially through the output positions and
chooses a neuron for that position such that the number of nonzero quartets is the smallest.
Net weights permuted using https://gist.github.com/AndrovT/9e3fbaebb7082734dc84d27e02094cb3.
Benchmark:
Result of 100 runs of 'bench 16 1 13 default depth NNUE'
========================================================
base (...kfish-master) = 885869 +/- 7395
test (./stockfish ) = 895885 +/- 7368
diff = +10016 +/- 2984
speedup = +0.0113
P(speedup > 0) = 1.0000
Passed STC:
https://tests.stockfishchess.org/tests/view/648866c4713491385c804728
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 126784 W: 34003 L: 33586 D: 59195
Ptnml(0-2): 283, 13001, 36437, 13358, 313
closes https://github.com/official-stockfish/Stockfish/pull/4620
No functional change.
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@ -39,7 +39,7 @@ namespace Eval {
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// The default net name MUST follow the format nn-[SHA256 first 12 digits].nnue
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// for the build process (profile-build and fishtest) to work. Do not change the
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// name of the macro, as it is used in the Makefile.
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#define EvalFileDefaultName "nn-fdc1d0fe6455.nnue"
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#define EvalFileDefaultName "nn-cd2ff4716c34.nnue"
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namespace NNUE {
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