From 241156da6f35cb888253e6b8814e7b61a76b4fc7 Mon Sep 17 00:00:00 2001 From: tslil Date: Sun, 30 Aug 2026 19:46:07 +0100 Subject: TD(lambda), and a big rework NOTE: 6x6 weights are as-yet untrained On the performance side: * switch from linked-list chaining hash table to direct mapping * cache check_win by hash * persist transposition tables across plies (this was a big deal and difficult to puzzle out) * add align directives to the network floats * prepare_nn_input gained a small LUT to avoid branching (i suppose you might call this 1D embedding) * apply mtune=native for the native builds On the correctness side: * Zobrist has now includes the ply parity * the network now predicts something in [-1, 1] using tanh (approximated by polynomials) * the training object is now MSE because we're learning a value estimate * use .clangd instead of compile_commands.json On the training side: * completely forgo human-derived data set * implement td(lambda), self-play, tournaments --- include/weights_5.h | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) (limited to 'include/weights_5.h') diff --git a/include/weights_5.h b/include/weights_5.h index 6f376ee..db2a69f 100644 --- a/include/weights_5.h +++ b/include/weights_5.h @@ -1,5 +1,5 @@ /* - This file is part of ct. + This file is part of ctak. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -12,13 +12,25 @@ General Public License for more details. You should have received a copy of the GNU General Public License - along with ct. If not, see . + along with ctak. If not, see . */ +#ifndef WEIGHTS_5_H +#define WEIGHTS_5_H + #define FIVE_INP_NUM 3 + 5 * 5 #define FIVE_DENSE_NUM 64 -extern const float five_dense_weights[FIVE_DENSE_NUM][FIVE_INP_NUM]; +/* + * 16-byte alignment so the evaluation dot products can be + * auto-vectorised (SSE2 / NEON); the generated weights file defines + * the arrays with the same attribute. + */ +#define NN_ALIGNED __attribute__((aligned(16))) + +extern const float five_dense_weights[FIVE_DENSE_NUM][FIVE_INP_NUM] NN_ALIGNED; extern const float five_dense_biases[FIVE_DENSE_NUM]; -extern const float five_output_weights[2][FIVE_DENSE_NUM]; -extern const float five_output_bias[2]; +extern const float five_logit_weights[FIVE_DENSE_NUM] NN_ALIGNED; +extern const float five_logit_bias; + +#endif -- cgit v1.3.1