Performance

Measured: Linux x86_64, g16 (Grok16-16.2.0) 16.2.0, gnu++26. Repo: PERFORMANCE.md.

Speed bench (report v5.0.0)

Suite speed_demo @ 1.1.0 — compile ms + execution ops/s. Full manual: Speed Bench.

SPEED_DEMO_TARGET_SEC=3 ./scripts/grok16-toolchain.sh exec-full-bench
./scripts/grok16-toolchain.sh exec-compare

Runner	Compile (ms)	ops/s
C++ — g16 belt_2_0	—	102,843,184.74
C++ — host g++ -O2	—	101,093,393.65
C — g16 belt_1_0	—	99,454,820.63
CMake — host g++ -O2	—	98,892,364.74
C — host gcc -O2	—	97,416,875.40
C — g16 belt_2_0	—	95,729,447.71
C++ — g16 belt_1_0	—	95,052,367.49
C++ — g16 belt_2_0 (post-meld re-exec)	—	93,388,093.30
C++ — g16 sense belt_2_0	—	91,070,985.42
Python — host CPython 3	—	843,828.62
Python — gpy-16 GrokVM	—	755,552.29

Belt triad compile and run comparison — bench-triad — host gcc vs belt_1_0 vs belt_2_0

Belt triad (bench-triad)

Workload: examples/field-nexus-bench — 240 frames, FieldX86 + entropy + wave + NEXUS.

Toolchain	Profile	compile_ms	run wall_ms	binary bytes
host `g++`	`-O3 -march=native`	2078	4	27,264
`g16`	`belt_1_0`	1108	3	22,712
`g16`	`belt_2_0`	1061	3	22,840

belt_1_0 matches host runtime; belt_2_0 trades compile time for production single-fabric belt.

./scripts/grok16-toolchain.sh bench-triad
cat data/bench/triad-latest.json

Field g16 vs host compile comparison — bench-compare — field g16 vs host gcc/g++

bench-all — field-nexus-bench across profiles

Field-Opt vs baseline

Build	Flags	kernel wall_ms	binary bytes
baseline	-std=gnu++26 -O2	2.65	17144
field_opt / belt_1_0	profile flags	2.11–2.19	22616

Delta: ~19% faster kernel vs -O2 on same source.

Profile suite (bench-all)

Profile	compile_ms	run_ms	bytes	kernel
field_opt	828–874	4–5	22616	wall_ms ~2.1
belt_2_0	~3708	~5	22840	single fabric
ai	735	6–7	18232	wall_ms ~4.0
vulkan_rtx	864–876	4–5	22728	wall_ms ~2.1

Reproduce

export G16_PREFIX="$(pwd)"
export G16_BELT_PROFILE=belt_2_0
./scripts/grok16-toolchain.sh bench-triad
./scripts/grok16-toolchain.sh field-bench
./scripts/grok16-toolchain.sh bench-all

PGO

./scripts/grok16-toolchain.sh profile
G16_ENABLE_PGO=1 ./scripts/grok16-toolchain.sh field-bench