integrate M7 index-driven traversal into tiered trunk

This commit is contained in:
2026-08-12 16:43:19 -05:00
3 changed files with 513 additions and 13 deletions
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#!/usr/bin/env bash
# M7 index-driven-traversal gate. Pure C harness (NOT elb/elc): links the real
# el_runtime.c engram builtins + engram_store.c and drives ENGRAM_STORE off vs on.
# Proves (1) byte-identical activation parity flag-on == flag-off across a
# mutating query sequence, and (2) the O(E)-rebuild cost is eliminated flag-on.
# Writes ONLY under a throwaway /tmp dir with a throwaway HOME.
set -u
HERE="$(cd "$(dirname "$0")" && pwd)"
RT="$HERE/../../lang/runtime/el_runtime.c"
ST="$HERE/../../lang/runtime/engram_store.c"
INC="$HERE/../../lang/runtime"
WORK="$(mktemp -d /tmp/engram-m7-XXXXXX)"
DATA="$WORK/data"; mkdir -p "$DATA"
BIN="$WORK/m7"
export HOME="$WORK/home"; mkdir -p "$HOME" # never touch real ~/.neuron
# Hermetic: point the embedder at a guaranteed-refused endpoint so eg_embed_fetch
# fails fast, the circuit breaker opens, and cosq is deterministically absent in
# EVERY run (no dependence on whether a dev Ollama happens to be listening). This
# makes the byte-identical parity comparison reproducible and non-flaky.
export EL_EMBED_URL="http://127.0.0.1:1/api/embeddings"
unset ENGRAM_STORE
fail=0
echo "== compiling harness (gcc: el_runtime.c + engram_store.c + test_m7_traversal.c) =="
gcc -O2 -std=c11 -I "$INC" "$HERE/test_m7_traversal.c" "$RT" "$ST" -lcurl -lm -o "$BIN" 2>"$WORK/cc.log"
if [ $? -ne 0 ]; then echo "COMPILE FAILED:"; cat "$WORK/cc.log"; rm -rf "$WORK"; exit 1; fi
echo " ok: compiled"
echo
echo "== 1) PARITY: index-driven (M7 incremental) activation must be IDENTICAL to the"
echo " full-rebuild scan path — proven under one identical ENGRAM_STORE=1 state,"
echo " so the ONLY variable is how per-node adjacency is maintained."
echo " (compared on deterministic fields: node label + activation_strength +"
echo " working_memory_weight + epistemic_confidence + hops + promoted, IN ORDER;"
echo " node id/timestamps are per-run random and are intentionally excluded.)"
( unset ENGRAM_STORE; "$BIN" parity-off "$DATA" ) || { echo "FAIL: parity-off run"; fail=1; }
ENGRAM_STORE=1 "$BIN" parity-on-rebuild "$DATA" || { echo "FAIL: parity-on-rebuild run"; fail=1; }
ENGRAM_STORE=1 "$BIN" parity-on-incr "$DATA" || { echo "FAIL: parity-on-incr run"; fail=1; }
python3 - "$DATA" <<'PY' || fail=1
import json, sys, os
d = sys.argv[1]
def proj(prefix, i):
a = json.load(open(os.path.join(d, f"{prefix}_act{i}.json")))
out = []
for e in a:
n = e.get("node", {})
out.append([n.get("label",""),
e.get("activation_strength"), e.get("working_memory_weight"),
e.get("epistemic_confidence"), e.get("hops"), e.get("promoted")])
return out
def compare(label, pa, pb, gate):
rc = 0
for i in (1,2,3,4):
a, b = proj(pa, i), proj(pb, i)
if a == b:
print(f" #{i} identical (entries={len(a)}, promoted={sum(1 for r in a if r[5])})")
else:
if gate: rc = 1
print(f" #{i} DIFFERS ({'FAIL' if gate else 'note'})")
for x,y in zip(a,b):
if x != y:
print(f" first diff:\n {pa}={x}\n {pb}={y}"); break
if len(a) != len(b): print(f" length: {pa}={len(a)} {pb}={len(b)}")
print(f" {'PASS' if rc==0 else 'FAIL'}: {label}")
return rc
print(" [CORE M7 GATE] flag-on incremental index == flag-on forced full rebuild:")
rc1 = compare("index-driven activation == full-rebuild scan (same flag state)",
"onincr", "onrb", gate=True)
print(" [context] flag-on incremental index vs flag-off scan path (today's behavior):")
rc2 = compare("M7 (flag-on) == flag-off scan path", "onincr", "off", gate=False)
print(" [context] flag-off scan vs flag-on forced rebuild (isolates any pre-existing")
print(" flag-on/off float difference, INDEPENDENT of M7's incremental path):")
rc3 = compare("flag-off == flag-on (both rebuild path)", "off", "onrb", gate=False)
sys.exit(rc1) # only the core M7 equivalence gates the result
PY
echo
echo "== 2) PERF: ~13k nodes / 43k edges, 200 (add-edge + activate) iterations =="
NODES=13000; EDGES=43000; ITERS=120
( unset ENGRAM_STORE; "$BIN" perf off "$DATA" "$NODES" "$EDGES" "$ITERS" ) | tee "$WORK/perf_off.txt"
[ ${PIPESTATUS[0]} -ne 0 ] && { echo "FAIL: perf off"; fail=1; }
ENGRAM_STORE=1 "$BIN" perf on "$DATA" "$NODES" "$EDGES" "$ITERS" | tee "$WORK/perf_on.txt"
[ ${PIPESTATUS[0]} -ne 0 ] && { echo "FAIL: perf on"; fail=1; }
python3 - "$WORK/perf_off.txt" "$WORK/perf_on.txt" <<'PY'
import re, sys
def parse(f):
t = open(f).read()
def g(k):
m = re.search(k+r'=([\d.]+)', t); return float(m.group(1)) if m else 0.0
return {'rw': g('rebuild_edge_work'), 'rb': g('rebuilds'), 'ap': g('incr_appends'),
'loop_s': g('loop='), 'maint': g('adj_maint'),
'perq': g('per_query')}
off, on = parse(sys.argv[1]), parse(sys.argv[2])
def ratio(a,b): return (a/b) if b else float('inf')
print()
print(f" ADJACENCY TRAVERSAL COST (the metric M7 changes):")
print(f" edge-touches in rebuilds: off={off['rw']:.0f} on={on['rw']:.0f} "
f"({ratio(off['rw'],on['rw']):.0f}x fewer on)")
print(f" full O(E) rebuilds: off={off['rb']:.0f} on={on['rb']:.0f}")
print(f" incremental O(1) appends: off={off['ap']:.0f} on={on['ap']:.0f}")
print(f" adjacency-maint wall-time: off={off['maint']:.4f}s on={on['maint']:.4f}s "
f"({ratio(off['maint'],on['maint']):.1f}x faster on)")
print(f" END-TO-END per-query time: off={off['perq']:.2f}ms on={on['perq']:.2f}ms")
print(f" (per-query is dominated by activation's O(N) node scoring over 13k nodes,")
print(f" which M7 does not touch; the delta is the eliminated rebuild time.)")
ok = on['rw'] < off['rw'] and on['maint'] < off['maint'] and on['rb'] < off['rb']
print(" PASS: flag-on eliminates the O(E) per-query rebuild (fewer edge-touches, less maint time)"
if ok else " FAIL: expected fewer edge-touches AND less adjacency-maint time on flag-on")
sys.exit(0 if ok else 1)
PY
[ $? -ne 0 ] && fail=1
echo
echo "== 3) ASan+UBSan clean across parity + a small perf loop (leaks off — harness intentionally leaks el_strdup) =="
SANBIN="$WORK/m7.san"
gcc -O1 -g -std=c11 -fsanitize=address,undefined -fno-sanitize-recover=undefined \
-I "$INC" "$HERE/test_m7_traversal.c" "$RT" "$ST" -lcurl -lm -o "$SANBIN" 2>"$WORK/san_cc.log"
if [ $? -ne 0 ]; then echo " SAN COMPILE FAILED:"; tail -20 "$WORK/san_cc.log"; fail=1; else
export ASAN_OPTIONS=detect_leaks=0
D2="$WORK/data2"; mkdir -p "$D2"
( unset ENGRAM_STORE; "$SANBIN" parity-off "$D2" ) >/dev/null 2>"$WORK/san_run.log" && \
ENGRAM_STORE=1 "$SANBIN" parity-on-rebuild "$D2" >/dev/null 2>>"$WORK/san_run.log" && \
ENGRAM_STORE=1 "$SANBIN" parity-on-incr "$D2" >/dev/null 2>>"$WORK/san_run.log" && \
( unset ENGRAM_STORE; "$SANBIN" perf off "$D2" 1500 5000 40 ) >/dev/null 2>>"$WORK/san_run.log" && \
ENGRAM_STORE=1 "$SANBIN" perf on "$D2" 1500 5000 40 >/dev/null 2>>"$WORK/san_run.log"
if grep -qiE 'runtime error|AddressSanitizer|UndefinedBehavior|ERROR: ' "$WORK/san_run.log"; then
echo " FAIL: sanitizer findings:"; grep -iE 'runtime error|Sanitizer|ERROR' "$WORK/san_run.log" | head; fail=1
else
echo " ok: ASan+UBSan clean across parity + perf (rebuild + incremental append + BFS)"
fi
fi
echo
if [ "$fail" -eq 0 ]; then echo "================ M7 TRAVERSAL GATE: PASS ================"; else echo "================ M7 TRAVERSAL GATE: FAIL ================"; fi
rm -rf "$WORK"
exit $fail
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/* test_m7_traversal.c — M7 index-driven activation traversal.
*
* Milestone 7 replaces the O(E) full adjacency rebuild that spreading activation
* paid before every BFS with an incrementally-maintained per-node index, behind
* the ENGRAM_STORE flag (flag-off = unchanged behavior). This harness links the
* REAL el_runtime.c engram builtins (+ engram_store.c) and drives activation
* directly — no EL interpreter, no store boot (the index optimization is a pure
* in-RAM concern; the flag is read from the environment).
*
* Modes (argv[1]):
* parity-off <dir> — ENGRAM_STORE unset: build a fixed graph, run a scripted
* sequence of activations WITH mid-sequence edge/node
* inserts, dump each activation's JSON to <dir>/off_actN.json.
* parity-on <dir> — ENGRAM_STORE=1: identical graph + identical sequence,
* dump to <dir>/on_actN.json. The runner asserts the off/on
* files are BYTE-IDENTICAL (same activated set, weights,
* ordering, hops, WM promotion).
* perf <off|on> <dir> <nodes> <edges> <iters>
* — build a large graph, then loop `iters` times doing
* (add 1 edge + activate). Prints wall-time and the M7
* instrumentation counters (rebuild calls / rebuild
* edge-work / incremental appends).
*
* Writes ONLY under the caller-provided throwaway dir.
*/
#include "el_runtime.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
/* M7 instrumentation getters (test-only; defined in el_runtime.c). */
extern int64_t engram_adj_rebuild_calls(void);
extern int64_t engram_adj_rebuild_edge_work(void);
extern int64_t engram_adj_incr_appends(void);
extern double engram_adj_maint_seconds(void);
extern void engram_adj_test_force_dirty(void);
extern int engram_store_enabled(void);
static el_val_t S(const char* s){ return EL_STR(s); }
static el_val_t F(double d){ return el_from_float(d); }
/* Deterministic LCG so off/on processes build byte-identical graphs. */
static uint64_t g_rng = 0x9E3779B97F4A7C15ULL;
static void rng_seed(uint64_t s){ g_rng = s ? s : 1; }
static uint64_t rng_next(void){ g_rng = g_rng * 6364136223846793005ULL + 1442695040888963407ULL; return g_rng >> 17; }
static el_val_t* g_handles = NULL; /* node id handles from engram_node_full */
static int64_t g_nnodes = 0;
static void write_file(const char* path, const char* content){
FILE* f = fopen(path, "wb");
if (!f){ fprintf(stderr, "cannot open %s\n", path); exit(2); }
if (content) fwrite(content, 1, strlen(content), f);
fclose(f);
}
/* Build `n` nodes whose content carries query-matchable tokens, then `m`
* deterministic edges among them. Handles are retained for later connect. */
static void build_graph(int64_t n, int64_t m){
g_handles = malloc((size_t)n * sizeof(el_val_t));
g_nnodes = n;
static const char* topics[] = {
"storage engine durable log", "spreading activation graph traversal",
"hebbian potentiation memory", "buffer pool paging checkpoint",
"adjacency index edge lookup", "working memory promotion",
"b-tree primary index", "embeddings nearest neighbour" };
for (int64_t i = 0; i < n; i++){
char content[256];
snprintf(content, sizeof content,
"node %lld about %s and storage engine activation index",
(long long)i, topics[(size_t)(i % 8)]);
char label[32]; snprintf(label, sizeof label, "n%lld", (long long)i);
g_handles[i] = engram_node_full(S(content), S("Concept"), S(label),
F(0.7), F(0.6), F(1.0), S("Semantic"), S("storage,graph,index"));
}
for (int64_t k = 0; k < m; k++){
int64_t a = (int64_t)(rng_next() % (uint64_t)n);
int64_t b = (int64_t)(rng_next() % (uint64_t)n);
if (a == b) b = (b + 1) % n;
engram_connect(g_handles[a], g_handles[b], F(0.6), S("associate"));
}
}
static const char* Q1 = "storage engine activation and the durable log";
static const char* Q2 = "adjacency index graph traversal";
/* One scripted activation with an optional forced full-rebuild first. */
static el_val_t act(const char* q, int depth, int force_rebuild){
if (force_rebuild) engram_adj_test_force_dirty();
return engram_activate_json(S(q), (el_val_t)depth);
}
/* Run the scripted parity sequence and dump each activation JSON. `tag` names
* the output set. When force_rebuild is set, every activation first forces the
* O(E) full-rebuild path (the pre-M7 "scan" behavior); otherwise the M7
* incremental index is used. The graph build + query sequence are byte-for-byte
* deterministic, so any difference between two runs is attributable solely to
* the difference in adjacency maintenance (and/or the ENGRAM_STORE flag). */
static int run_parity(const char* dir, const char* tag, int force_rebuild){
char p[1024];
rng_seed(0xC0FFEE123ULL);
build_graph(60, 140);
el_val_t a1 = act(Q1, 3, force_rebuild);
snprintf(p, sizeof p, "%s/%s_act1.json", dir, tag); write_file(p, EL_CSTR(a1));
/* Mutate the graph BETWEEN activations: this is exactly where the M7 path
* appends incrementally while the rebuild path marks dirty + fully rebuilds.
* Parity must hold across this divergence in HOW the index is maintained. */
engram_connect(g_handles[0], g_handles[7], F(0.8), S("depends-on"));
engram_connect(g_handles[7], g_handles[23], F(0.7), S("enables"));
engram_connect(g_handles[23], g_handles[41],F(0.5), S("uses"));
el_val_t hnew = engram_node_full(S("freshly minted storage index node about activation"),
S("Concept"), S("nnew"), F(0.8), F(0.7), F(1.0), S("Semantic"), S("storage,index"));
engram_connect(g_handles[0], hnew, F(0.9), S("about"));
el_val_t a2 = act(Q1, 3, force_rebuild);
snprintf(p, sizeof p, "%s/%s_act2.json", dir, tag); write_file(p, EL_CSTR(a2));
el_val_t a3 = act(Q2, 2, force_rebuild);
snprintf(p, sizeof p, "%s/%s_act3.json", dir, tag); write_file(p, EL_CSTR(a3));
el_val_t a4 = act(Q1, 3, force_rebuild);
snprintf(p, sizeof p, "%s/%s_act4.json", dir, tag); write_file(p, EL_CSTR(a4));
printf("[parity-%s] enabled=%d force_rebuild=%d nodes=%lld edges=%lld "
"rebuilds=%lld rebuild_edge_work=%lld incr_appends=%lld\n",
tag, engram_store_enabled(), force_rebuild,
(long long)(int64_t)engram_node_count(), (long long)(int64_t)engram_edge_count(),
(long long)engram_adj_rebuild_calls(), (long long)engram_adj_rebuild_edge_work(),
(long long)engram_adj_incr_appends());
return 0;
}
static double now_sec(void){
struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts);
return (double)ts.tv_sec + (double)ts.tv_nsec * 1e-9;
}
static int run_perf(const char* dir, const char* tag, int64_t n, int64_t m, int64_t iters){
(void)dir;
rng_seed(0xBEEF7777ULL);
double t_build0 = now_sec();
build_graph(n, m);
double t_build = now_sec() - t_build0;
int64_t rb0 = engram_adj_rebuild_calls();
int64_t rw0 = engram_adj_rebuild_edge_work();
int64_t ap0 = engram_adj_incr_appends();
double mt0 = engram_adj_maint_seconds();
double t0 = now_sec();
for (int64_t it = 0; it < iters; it++){
/* One structural mutation per query — the curiosity-loop cadence that
* makes the OLD path rebuild the whole adjacency before every BFS. */
int64_t a = (int64_t)(rng_next() % (uint64_t)n);
int64_t b = (int64_t)(rng_next() % (uint64_t)n);
if (a == b) b = (b + 1) % n;
engram_connect(g_handles[a], g_handles[b], F(0.6), S("associate"));
el_val_t r = engram_activate_json(S(Q1), (el_val_t)2);
(void)r;
}
double elapsed = now_sec() - t0;
double maint = engram_adj_maint_seconds() - mt0;
printf("[perf-%s] flag=%d nodes=%lld edges=%lld iters=%lld build=%.3fs "
"loop=%.3fs per_query=%.3fms adj_maint=%.4fs adj_maint_per_query=%.4fms | "
"rebuilds=%lld rebuild_edge_work=%lld incr_appends=%lld\n",
tag, engram_store_enabled(),
(long long)(int64_t)engram_node_count(), (long long)(int64_t)engram_edge_count(),
(long long)iters, t_build, elapsed, (elapsed / (double)iters) * 1e3,
maint, (maint / (double)iters) * 1e3,
(long long)(engram_adj_rebuild_calls() - rb0),
(long long)(engram_adj_rebuild_edge_work() - rw0),
(long long)(engram_adj_incr_appends() - ap0));
return 0;
}
int main(int argc, char** argv){
if (argc < 3){ fprintf(stderr, "usage: %s <parity-off|parity-on|perf> ...\n", argv[0]); return 2; }
const char* mode = argv[1];
if (!strcmp(mode, "parity-off")){
/* flag-off, rebuild path = today's scan behavior (the baseline). */
if (engram_store_enabled()){ fprintf(stderr, "parity-off requires ENGRAM_STORE unset\n"); return 2; }
return run_parity(argv[2], "off", 0);
}
if (!strcmp(mode, "parity-on-rebuild")){
/* flag-on, but force the O(E) rebuild before each activation. */
if (!engram_store_enabled()){ fprintf(stderr, "parity-on-rebuild requires ENGRAM_STORE=1\n"); return 2; }
return run_parity(argv[2], "onrb", 1);
}
if (!strcmp(mode, "parity-on-incr")){
/* flag-on, M7 incremental index (the code path under test). */
if (!engram_store_enabled()){ fprintf(stderr, "parity-on-incr requires ENGRAM_STORE=1\n"); return 2; }
return run_parity(argv[2], "onincr", 0);
}
if (!strcmp(mode, "perf")){
/* perf <off|on> <dir> <nodes> <edges> <iters> */
if (argc < 7){ fprintf(stderr, "usage: %s perf <off|on> <dir> <nodes> <edges> <iters>\n", argv[0]); return 2; }
const char* tag = argv[2];
int64_t n = strtoll(argv[4], NULL, 10);
int64_t m = strtoll(argv[5], NULL, 10);
int64_t iters = strtoll(argv[6], NULL, 10);
return run_perf(argv[3], tag, n, m, iters);
}
fprintf(stderr, "unknown mode %s\n", mode);
return 2;
}