From 241156da6f35cb888253e6b8814e7b61a76b4fc7 Mon Sep 17 00:00:00 2001
From: tslil <tslil@posteo.de>
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
---
 Makefile | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 5303448..7047e81 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,11 @@
 IDIR=include
-DEFINES=-DDETERMINISTIC
 CFLAGS=-O3 -ffast-math -Wall -Wextra -Wpedantic -std=c99 -D_DEFAULT_SOURCE $(DEFINES) -I$(IDIR)
+NATIVE_FLAGS=-march=native
 
 CTAK=include/tak.c
 CTAK_OBJS=$(CTAK:.c=.o)
-SRCS=$(filter-out include/lcdlib.c,$(wildcard include/*.c))
+CAND_SRCS=include/cand_weights_5.c include/cand_weights_6.c
+SRCS=$(filter-out include/lcdlib.c $(CAND_SRCS),$(wildcard include/*.c))
 OBJS=$(SRCS:.c=.o)
 
 BUILDROOT_DIR=buildroot-2020.11.1
@@ -25,14 +26,20 @@ ctlm: src/ctlm.o $(OBJS)
 cttei: src/cttei.o $(OBJS)
 	$(CC) $(CFLAGS) src/cttei.o $(OBJS) -o cttei
 
-pptdb: src/pptdb.o $(CTAK_OBJS)
-	$(CC) $(CFLAGS) src/pptdb.o $(CTAK_OBJS) -o pptdb
-
 clean:
-	rm -f ctlm ct1986 cttei pptdb geminict
+	rm -f ctlm ct1986 cttei pptdb geminict selfplay match
 	rm -f src/*.o include/*.o
 
-native: clean ctlm cttei geminict
+native: CFLAGS += $(NATIVE_FLAGS)
+native: clean ctlm cttei geminict selfplay
+
+selfplay: CFLAGS += $(NATIVE_FLAGS)
+selfplay: src/selfplay.o $(OBJS)
+	$(CC) $(CFLAGS) src/selfplay.o $(OBJS) -o selfplay
+
+match: CFLAGS += $(NATIVE_FLAGS)
+match: src/match.o $(OBJS)
+	$(CC) $(CFLAGS) src/match.o $(OBJS) -o match
 
 $(CROSS_CC):
 	./resources/do_buildroot.sh $(BUILDROOT_DIR)
-- 
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