Fr0zkaandClaude Opus 5.5
90378a585f
Opt-in at build time (VOXELFORGE_PROFILE_LEGACY_TERMS=1; compiled out by default, ~2% when on). Per legacy sample: passage/support composer ~1.05 us vs primitive scan ~0.19 us, boundary band ~0.06 us, noise ~0.01 us. Resolved-passage constants are cached at field binding (arithmetic order unchanged); whole-view effect within noise. Per-tile hashes identical to L75 in all 24 compiler x worker x view comparisons; fast tier PASS; Linux UE host builds. R40 researcher notes attached. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
85 lines
3.5 KiB
Python
85 lines
3.5 KiB
Python
#!/usr/bin/env python3
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"""Measure sampled per-term profiler overhead against the same clean candidate."""
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from __future__ import annotations
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import json
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import os
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import re
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import subprocess
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import time
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from pathlib import Path
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ROOT = Path(__file__).resolve().parents[4]
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DATA = ROOT / "Standalone/data/owner_world.json"
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OUT = ROOT / os.environ.get("VOXELFORGE_L76_PROFILE_OVERHEAD_OUT",
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"Saved/Linux/l76/term-profiler-overhead")
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BINARIES = {
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"clean": ROOT / "Standalone/bin/linux/VoxelForgeCoreHeadless-l76-clang",
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"profile": ROOT / "Standalone/bin/linux/VoxelForgeCoreHeadless-l76-termprofile-clang",
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}
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CAMERAS = {
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1: (25.8369140625, 3.19921875, -737.0),
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2: (19.166015625, -14.2001953125, -753.3740234375),
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}
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KV = re.compile(r"([a-zA-Z0-9_]+)=([^ ]+)")
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def run(kind: str, strate: int, pair: int) -> dict:
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OUT.mkdir(parents=True, exist_ok=True)
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log = OUT / f"strate{strate}-pair{pair}-{kind}.log"
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camera = ",".join(f"{value:.12f}" for value in CAMERAS[strate]) + ",0,0"
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command = [
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"taskset", "-c", "0-11", "prlimit", "--as=6442450944", "--", "timeout",
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"1740s", str(BINARIES[kind]), str(DATA), "--world-assembler-prototype",
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"--stream-benchmark", "--stream-pipeline", "--force-generate", "--workers=8",
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"--clip-radius=3", "--max-clip-level=8", "--max-level=8", f"--camera={camera}",
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"--profile-lod-work", "--instrument-tile-drain", "--profile-passage-composer",
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]
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started = time.monotonic()
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with log.open("w", encoding="utf-8") as output:
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result = subprocess.run(command, cwd=ROOT, stdout=output,
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stderr=subprocess.STDOUT, check=False, timeout=1740)
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pipeline = {}
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with log.open(encoding="utf-8", errors="replace") as stream:
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for line in stream:
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if line.startswith("[StreamPipeline]"):
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pipeline = dict(KV.findall(line))
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if result.returncode != 0 or "whole_view_ready" not in pipeline:
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raise SystemExit(f"profiler-overhead run failed; see {log}")
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return {
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"kind": kind, "strate": strate, "pair": pair, "exit_code": result.returncode,
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"process_wall_s": round(time.monotonic() - started, 3),
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"whole_view_ready_s": float(pipeline["whole_view_ready"].removesuffix("s")),
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"log": str(log.relative_to(ROOT)),
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}
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def main() -> int:
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missing = [str(path) for path in (*BINARIES.values(), DATA) if not path.is_file()]
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if missing:
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raise SystemExit("missing input: " + ", ".join(missing))
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rows = []
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for strate in (1, 2):
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for pair in range(3):
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order = ("clean", "profile") if pair % 2 == 0 else ("profile", "clean")
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pair_rows = {kind: run(kind, strate, pair) for kind in order}
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delta = pair_rows["profile"]["whole_view_ready_s"] \
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- pair_rows["clean"]["whole_view_ready_s"]
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result = {
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"strate": strate, "pair": pair,
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"clean_s": pair_rows["clean"]["whole_view_ready_s"],
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"profile_s": pair_rows["profile"]["whole_view_ready_s"],
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"delta_s": round(delta, 4),
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"delta_percent": round(100.0 * delta / pair_rows["clean"]["whole_view_ready_s"], 2),
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"runs": [pair_rows[kind] for kind in order],
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}
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rows.append(result)
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print("[L76TermProfilerOverhead] " + json.dumps(result, sort_keys=True), flush=True)
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(OUT / "summary.json").write_text(json.dumps(rows, indent=2) + "\n", encoding="utf-8")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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