PhyCAD-Bench / benchmark.py
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"""Run and grade PhyCAD-Bench tasks."""
import argparse
import ast
import hashlib
import json
import os
import re
import subprocess
import sys
import tempfile
from concurrent.futures import FIRST_COMPLETED, ThreadPoolExecutor, wait
from decimal import Decimal
from pathlib import Path
from zipfile import ZIP_DEFLATED, ZipFile, ZipInfo
from models import ModelTimeoutError, OpenAICompatibleAdapter
ROOT = Path(__file__).resolve().parent
TASKS = ROOT / "tasks"
SOURCE_SHA256 = "e2bade23eb233f2210b152745c427708589574c83e4d6ccf764712481817e09b"
SOURCE_ROOT = "cad-physics-sample/tasks"
VERSION = "phycad-bench-v0.2"
LEGACY_VERSION = "physics2cadbench-v0.2"
OPENROUTER_BASE_URL = "https://openrouter.ai/api/v1"
SYSTEM_PROMPT = "You are editing a mechanical CAD solid to meet a physics performance target."
TASK_FILES = ("instruction.txt", "setup.json", "start.py", "start.step", "simulate.py")
RENDER_CODE = (
"import cadquery as cq, runpy, sys\n"
"shape = runpy.run_path(sys.argv[1]).get('result')\n"
"if isinstance(shape, cq.Workplane): shape = shape.val()\n"
"if isinstance(shape, cq.Shape) and len(shape.Solids()) == 1: shape = shape.Solids()[0]\n"
"if not isinstance(shape, cq.Shape) or shape.ShapeType() != 'Solid' "
"or not shape.isValid() or len(shape.Solids()) != 1: "
"raise ValueError('result must be one valid solid')\n"
"cq.exporters.export(shape, sys.argv[2])\n"
)
COMPARE_CODE = (
"import cadquery as cq, json, sys\n"
"a = cq.importers.importStep(sys.argv[1]).val()\n"
"b = cq.importers.importStep(sys.argv[2]).val()\n"
"print(json.dumps({'a_minus_b_mm3': a.cut(b).Volume(), "
"'b_minus_a_mm3': b.cut(a).Volume(), 'a_volume_mm3': a.Volume(), "
"'b_volume_mm3': b.Volume()}))\n"
)
def sha256(data: bytes) -> str:
return hashlib.sha256(data).hexdigest()
def zip_write(archive: ZipFile, name: str, data: bytes) -> None:
info = ZipInfo(name, (1980, 1, 1, 0, 0, 0))
info.compress_type = ZIP_DEFLATED
archive.writestr(info, data)
def verified_sample(path: Path) -> ZipFile:
if sha256(path.read_bytes()) != SOURCE_SHA256:
raise ValueError("Source ZIP does not match the PR #94 CAD physics sample")
archive = ZipFile(path)
bad_member = archive.testzip()
if bad_member:
archive.close()
raise ValueError(f"Corrupt source ZIP member: {bad_member}")
return archive
def task_ids() -> tuple[str, ...]:
ids = tuple(sorted(path.name for path in TASKS.iterdir() if path.is_dir() and path.name.isdigit()))
if not ids:
raise ValueError(f"No numbered tasks found in {TASKS}")
for task_id in ids:
for name in TASK_FILES:
if not (TASKS / task_id / name).is_file():
raise ValueError(f"Task {task_id} is missing {name}")
return ids
def task_file(task_id: str, name: str) -> bytes:
if task_id not in task_ids() or name not in TASK_FILES:
raise ValueError(f"Unknown task file: {task_id}/{name}")
return (TASKS / task_id / name).read_bytes()
def reference_file(archive: ZipFile, task_id: str, name: str) -> bytes:
return archive.read(f"{SOURCE_ROOT}/{task_id}/{name}")
def dataset_sha256() -> str:
digest = hashlib.sha256()
for task_id in task_ids():
for name in TASK_FILES:
digest.update(f"{task_id}/{name}\0".encode())
digest.update(task_file(task_id, name))
return digest.hexdigest()
def validate_candidate_source(code: str) -> None:
if len(code.encode()) > 50_000:
raise ValueError("CadQuery script exceeds 50 KB")
tree = ast.parse(code)
forbidden = {"open", "exec", "eval", "compile", "__import__", "globals", "locals", "vars", "getattr", "setattr", "delattr"}
for node in ast.walk(tree):
if isinstance(node, ast.Import) and any(alias.name not in ("cadquery", "math") for alias in node.names):
raise ValueError("Only cadquery and math imports are allowed")
if isinstance(node, ast.ImportFrom):
raise ValueError("Use only plain cadquery and math imports")
if isinstance(node, ast.Name) and node.id in forbidden:
raise ValueError(f"Disallowed function: {node.id}")
if isinstance(node, ast.Attribute) and node.attr.startswith("__"):
raise ValueError("Dunder attributes are not allowed")
def render_step(code: str, cad_python: Path) -> bytes:
validate_candidate_source(code)
in_container = os.environ.get("PHYCAD_BENCH_CONTAINER") == "1"
if not in_container:
if not Path("/usr/bin/sandbox-exec").is_file():
raise ValueError("Run inside the benchmark Docker image or on macOS with sandbox-exec")
if cad_python.resolve().is_relative_to(Path("/Users")):
raise ValueError("CadQuery Python must be outside /Users for sandbox isolation")
with tempfile.TemporaryDirectory(prefix="orla-cad-candidate-") as directory:
work = Path(directory)
source = work / "candidate.py"
output = work / "candidate.step"
source.write_text(code)
profile = (
'(version 1)(allow default)(deny network*)'
'(deny file-read* (subpath "/Users"))'
'(deny file-write* (subpath "/Users"))'
)
env = {"HOME": directory, "XDG_CACHE_HOME": directory, "TMPDIR": directory,
"PATH": "/opt/conda/envs/cad/bin:/usr/bin:/bin"}
command = ([str(cad_python)] if in_container else
["/usr/bin/sandbox-exec", "-p", profile, str(cad_python)])
completed = subprocess.run(
[*command, "-c", RENDER_CODE, str(source), str(output)],
cwd=work, env=env, text=True, capture_output=True, timeout=90, check=False,
)
if completed.returncode:
raise ValueError(f"CadQuery execution failed: {completed.stderr[-1200:] or completed.stdout[-1200:]}")
if not output.is_file() or output.stat().st_size > 10_000_000:
raise ValueError("CadQuery did not produce a STEP solid under 10 MB")
return output.read_bytes()
def verify_start_geometry(cad_python: Path, original: bytes, reproduced: bytes) -> None:
with tempfile.TemporaryDirectory(prefix="orla-cad-compare-") as directory:
old = Path(directory) / "original.step"
new = Path(directory) / "reproduced.step"
old.write_bytes(original)
new.write_bytes(reproduced)
run = subprocess.run(
[str(cad_python), "-c", COMPARE_CODE, str(old), str(new)],
capture_output=True, text=True, timeout=90, check=False,
)
if run.returncode:
raise ValueError(f"Could not compare reconstructed STEP: {run.stderr[-1000:]}")
result = json.loads(run.stdout)
if (abs(result["a_volume_mm3"] - result["b_volume_mm3"]) > 1e-5
or result["a_minus_b_mm3"] > 1e-5 or result["b_minus_a_mm3"] > 1e-5):
raise ValueError(f"Reconstructed source differs from original STEP: {result}")
def grade_step(task_id: str, candidate_step: bytes, cad_python: Path, physics_python: Path) -> dict:
result = {"task_id": task_id, "passed": False}
result["candidate_step_sha256"] = sha256(candidate_step)
with tempfile.TemporaryDirectory(prefix="orla-cad-physics-") as directory:
work = Path(directory)
(work / "before.step").write_bytes(task_file(task_id, "start.step"))
for name in ("setup.json", "simulate.py"):
(work / name).write_bytes(task_file(task_id, name))
(work / "after.step").write_bytes(candidate_step)
env = {key: value for key, value in os.environ.items() if key != "OPENROUTER_API_KEY"}
try:
run = subprocess.run(
[sys.executable, str(work / "simulate.py"), "--cad-python", str(cad_python),
"--physics-python", str(physics_python)],
cwd=work, env=env, capture_output=True, text=True, timeout=180, check=False,
)
except subprocess.TimeoutExpired:
return {**result, "stage": "physics", "error": "Physics run exceeded 180 seconds"}
after_path = work / "after.results.json"
if not after_path.is_file():
return {**result, "stage": "physics", "error": (run.stderr or run.stdout)[-1200:]}
after = json.loads(after_path.read_text())
comparison = after.get("comparison_to_before", {})
return {
**result,
"stage": "graded",
"passed": run.returncode == 0 and comparison.get("passed") is True,
"checks": comparison.get("checks", {}),
"improvement": {key: value for key, value in comparison.items() if key not in ("checks", "passed")},
"simulation_result": after.get("simulation_result"),
"step_properties": after.get("step_properties"),
}
def grade_one(task_id: str, code: str, cad_python: Path, physics_python: Path) -> dict:
try:
candidate_step = render_step(code, cad_python)
except (OSError, ValueError, SyntaxError, subprocess.TimeoutExpired) as exc:
return {"task_id": task_id, "passed": False, "stage": "render", "error": str(exc)[-1200:]}
return grade_step(task_id, candidate_step, cad_python, physics_python)
def audit(args: argparse.Namespace) -> None:
cad_python = Path(args.cad_python).expanduser().resolve()
physics_python = Path(args.physics_python).expanduser().resolve()
all_ids = task_ids()
if args.task and args.task not in all_ids:
raise ValueError(f"Unknown task: {args.task}")
ids = (args.task,) if args.task else all_ids
for task_id in ids:
if not (TASKS / task_id / "solution.py").is_file():
raise ValueError(f"Task {task_id} is missing solution.py for audit")
start = render_step(task_file(task_id, "start.py").decode(), cad_python)
verify_start_geometry(cad_python, task_file(task_id, "start.step"), start)
candidates = (
("start.py", False, grade_step(task_id, start, cad_python, physics_python)),
("solution.py", True, grade_one(
task_id, (TASKS / task_id / "solution.py").read_text(),
cad_python, physics_python)),
)
for name, expected_pass, report in candidates:
if report.get("stage") != "graded" or report["passed"] is not expected_pass:
raise ValueError(
f"Task {task_id} {name} expected "
f"{'PASS' if expected_pass else 'FAIL'}, got {report}"
)
print(f"PASS: task {task_id} {name} "
f"{'accepted' if expected_pass else 'rejected'}", flush=True)
if args.reference_zip:
with verified_sample(Path(args.reference_zip).expanduser().resolve()) as archive:
for task_id in (task_id for task_id in ("001", "002", "003", "004")
if task_id in ids):
verify_start_geometry(
cad_python, reference_file(archive, task_id, "before.step"),
task_file(task_id, "start.step"))
report = grade_step(task_id, reference_file(archive, task_id, "after.step"),
cad_python, physics_python)
if report.get("stage") != "graded" or report["passed"] is not True:
raise ValueError(f"Task {task_id} source after.step expected PASS, got {report}")
print(f"PASS: task {task_id} source after.step accepted", flush=True)
noun = "task" if len(ids) == 1 else "tasks"
print(f"PASS: {len(ids)} {noun} accepted gold scripts and rejected unchanged solids")
def grade(args: argparse.Namespace) -> None:
if args.task not in task_ids():
raise ValueError(f"Unknown task: {args.task}")
code = Path(args.candidate).read_text()
report = grade_one(args.task, code, Path(args.cad_python).resolve(), Path(args.physics_python).resolve())
Path(args.output).write_text(json.dumps(report, indent=2) + "\n")
print(f"Task {args.task}: {'PASS' if report['passed'] else 'FAIL'} ({report.get('stage')})")
print(f"Report: {args.output}")
def extract_code(content: str) -> str:
fences = re.findall(r"```(?:python|py)?\s*\n(.*?)```", content, flags=re.IGNORECASE | re.DOTALL)
return (max(fences, key=len) if fences else content).strip() + "\n"
def model_prompt(task_id: str) -> str:
instruction = task_file(task_id, "instruction.txt").decode()
setup = task_file(task_id, "setup.json").decode()
start_code = task_file(task_id, "start.py").decode()
step = task_file(task_id, "start.step").decode()
return (
f"Task {task_id}. All lengths in millimeters.\n\n"
f"Edit instruction:\n{instruction}\n\nPhysics setup:\n{setup}\n\n"
f"Starting CadQuery script:\n```python\n{start_code}```\n\n"
f"Starting STEP solid:\n```step\n{step}\n```\n\n"
"Return a complete CadQuery 2.6.1 Python script. It must define `result` as one valid solid. "
"Use only cadquery and math imports. Do not read or write files. "
"Return only code, without commentary."
)
def prompt_record(task_id: str) -> dict:
prompt = model_prompt(task_id)
return {"task_id": task_id, "prompt_sha256": sha256(prompt.encode()),
"messages": [{"role": "system", "content": SYSTEM_PROMPT},
{"role": "user", "content": prompt}]}
def export_prompts(args: argparse.Namespace) -> None:
output = Path(args.output).expanduser().resolve()
output.parent.mkdir(parents=True, exist_ok=True)
with output.open("w") as stream:
for task_id in task_ids():
stream.write(json.dumps(prompt_record(task_id)) + "\n")
print(f"Exported {len(task_ids())} prompts: {output}")
def grade_all(args: argparse.Namespace) -> None:
submissions = Path(args.submissions).expanduser().resolve()
if not submissions.is_dir():
raise ValueError(f"Submission folder does not exist: {submissions}")
cad_python = Path(args.cad_python).expanduser().resolve()
physics_python = Path(args.physics_python).expanduser().resolve()
ids = task_ids()
trials = []
for task_id in ids:
source = submissions / f"{task_id}.py"
if source.is_file():
code = source.read_text()
result = grade_one(task_id, code, cad_python, physics_python)
source_hash = sha256(code.encode())
else:
result = {"task_id": task_id, "passed": False, "stage": "submission",
"error": f"Missing {task_id}.py"}
source_hash = None
trials.append({"task_id": task_id, "submission_sha256": source_hash,
"prompt_sha256": prompt_record(task_id)["prompt_sha256"],
"grade": result})
print(f"Task {task_id}: {'PASS' if result['passed'] else 'FAIL'} ({result['stage']})", flush=True)
passed = sum(trial["grade"]["passed"] for trial in trials)
report = {"version": VERSION, "dataset_sha256": dataset_sha256(),
"model": args.model, "task_count": len(ids), "passed": passed,
"success_rate": passed / len(ids), "trials": trials}
output = Path(args.output).expanduser().resolve()
output.parent.mkdir(parents=True, exist_ok=True)
temporary = output.with_name(output.name + ".tmp")
temporary.write_text(json.dumps(report, indent=2) + "\n")
os.replace(temporary, output)
print(f"Overall: {passed}/{len(ids)} ({report['success_rate']:.1%})")
print(f"Report: {output}")
def usage_totals(trials: list[dict]) -> dict:
fields = ("prompt_tokens", "completion_tokens", "total_tokens", "cost")
totals = {}
reported_trials = {}
for field in fields:
values = [(trial.get("usage") or {}).get(field) for trial in trials]
values = [value for value in values if isinstance(value, (int, float))]
reported_trials[field] = len(values)
totals[field] = (float(sum(Decimal(str(value)) for value in values)) if field == "cost"
else sum(values)) if values else None
return {**totals, "reported_trials": reported_trials}
def save_report(path: Path, report: dict) -> None:
report["usage_totals"] = usage_totals(report["trials"])
path.parent.mkdir(parents=True, exist_ok=True)
temporary = path.with_name(path.name + ".tmp")
temporary.write_text(json.dumps(report, indent=2) + "\n")
os.replace(temporary, path)
scripts_zip = path.with_name(path.stem + ".scripts.zip")
with ZipFile(scripts_zip.with_name(scripts_zip.name + ".tmp"), "w") as archive:
for trial in report["trials"]:
name = f"task-{trial['task_id']}-repeat-{trial['repeat']}.py"
zip_write(archive, name, trial["cadquery_script"].encode())
os.replace(scripts_zip.with_name(scripts_zip.name + ".tmp"), scripts_zip)
def run_model(args: argparse.Namespace) -> None:
base_url = OPENROUTER_BASE_URL if args.command == "run-openrouter" else args.base_url
api_key_env = "OPENROUTER_API_KEY" if args.command == "run-openrouter" else args.api_key_env
adapter = OpenAICompatibleAdapter(base_url, api_key_env)
request_config = {args.token_field: args.max_output_tokens}
if args.reasoning_effort:
request_config["reasoning_effort"] = args.reasoning_effort
output = Path(args.output).expanduser().resolve()
task_hash = dataset_sha256()
ids = task_ids()
run_config = {"adapter": "openai-compatible", "base_url": adapter.base_url,
"api_key_env": api_key_env, "model_requested": args.model,
"repeats": args.repeats, "request_config": request_config,
"timeout_s": args.timeout}
if output.exists():
report = json.loads(output.read_text())
if (report.get("version") not in (VERSION, LEGACY_VERSION)
or report.get("dataset_sha256") != task_hash
or any(report.get(key) != value for key, value in run_config.items())):
raise ValueError("Existing report belongs to a different run configuration")
report["version"] = VERSION
else:
report = {"version": VERSION, "dataset_sha256": task_hash,
**run_config, "task_count": len(ids) * args.repeats, "trials": []}
done = {(trial["task_id"], trial["repeat"]) for trial in report["trials"]}
if len(done) != len(report["trials"]):
raise ValueError("Existing report has duplicate trials")
cad_python = Path(args.cad_python).expanduser().resolve()
physics_python = Path(args.physics_python).expanduser().resolve()
remaining = iter((task_id, repeat) for repeat in range(1, args.repeats + 1)
for task_id in ids if (task_id, repeat) not in done)
with ThreadPoolExecutor(max_workers=args.parallel_requests) as executor:
pending = {}
def submit_next() -> bool:
try:
task_id, repeat = next(remaining)
except StopIteration:
return False
prompt = prompt_record(task_id)
future = executor.submit(
adapter.generate, args.model, prompt["messages"], request_config, args.timeout)
pending[future] = (task_id, repeat, prompt["prompt_sha256"])
return True
while len(pending) < args.parallel_requests and submit_next():
pass
provider_error = None
while pending:
completed, _ = wait(pending, return_when=FIRST_COMPLETED)
ready = []
for future in completed:
task_id, repeat, prompt_hash = pending.pop(future)
try:
response = future.result()
except ModelTimeoutError as exc:
ready.append((task_id, repeat, prompt_hash, None, exc))
except Exception as exc:
if provider_error is None:
provider_error = exc
else:
ready.append((task_id, repeat, prompt_hash, response, None))
if provider_error is None:
while len(pending) < args.parallel_requests and submit_next():
pass
for task_id, repeat, prompt_hash, response, timeout_error in sorted(
ready, key=lambda item: (item[1], item[0])):
message = response.text if response else ""
code = extract_code(message) if response else ""
if timeout_error:
grade_result = {"task_id": task_id, "passed": False,
"stage": "provider", "error": str(timeout_error)}
elif response.finish_reason == "content_filter":
grade_result = {"task_id": task_id, "passed": False,
"stage": "provider", "error": "Provider stopped the response before complete code"}
else:
grade_result = grade_one(task_id, code, cad_python, physics_python)
report["trials"].append({
"task_id": task_id, "repeat": repeat,
"cadquery_script": code, "raw_response": message,
"prompt_sha256": prompt_hash,
"served_model": response.served_model if response else None,
"response_id": response.response_id if response else None,
"finish_reason": response.finish_reason if response else None,
"usage": response.usage if response else None, "grade": grade_result,
})
report["trials"].sort(key=lambda trial: (trial["repeat"], trial["task_id"]))
report["completed_trials"] = len(report["trials"])
report["passed"] = sum(t["grade"]["passed"] for t in report["trials"])
report["success_rate"] = (report["passed"] / report["task_count"]
if report["completed_trials"] == report["task_count"] else None)
save_report(output, report)
print(f"Task {task_id} repeat {repeat}: {'PASS' if grade_result['passed'] else 'FAIL'} ({grade_result.get('stage')})", flush=True)
if provider_error is not None:
raise provider_error
print(f"Overall: {report['passed']}/{report['task_count']} ({report['success_rate']:.1%})")
print(f"Saved run: {output}")
def main() -> None:
parser = argparse.ArgumentParser(description=__doc__)
commands = parser.add_subparsers(dest="command", required=True)
commands.add_parser("list", help="List available task IDs")
prompts_parser = commands.add_parser("export-prompts", help="Write provider-independent prompts as JSONL")
prompts_parser.add_argument("--output", required=True)
grade_parser = commands.add_parser("grade", help="Grade one CadQuery script")
grade_parser.add_argument("--task", required=True)
grade_parser.add_argument("--candidate", required=True)
grade_parser.add_argument("--cad-python", default=os.environ.get("CAD_PYTHON"))
grade_parser.add_argument("--physics-python", default=os.environ.get("PHYSICS_PYTHON"))
grade_parser.add_argument("--output", required=True)
all_parser = commands.add_parser("grade-all", help="Grade one numbered Python script per task")
all_parser.add_argument("--submissions", required=True)
all_parser.add_argument("--model", help="Model name to record in the report")
all_parser.add_argument("--cad-python", default=os.environ.get("CAD_PYTHON"))
all_parser.add_argument("--physics-python", default=os.environ.get("PHYSICS_PYTHON"))
all_parser.add_argument("--output", required=True)
audit_parser = commands.add_parser("audit", help="Check each task's gold script and unchanged solid")
audit_parser.add_argument("--task", help="Check only one numbered task")
audit_parser.add_argument("--reference-zip", help="Also check the original four source STEP edits")
audit_parser.add_argument("--cad-python", default=os.environ.get("CAD_PYTHON"))
audit_parser.add_argument("--physics-python", default=os.environ.get("PHYSICS_PYTHON"))
for name, help_text, token_field in (
("run", "Run an OpenAI-compatible local or cloud model", "max_tokens"),
("run-openrouter", "Run an OpenRouter model (convenience alias)", "max_completion_tokens"),
):
run_parser = commands.add_parser(name, help=help_text)
if name == "run":
run_parser.add_argument("--base-url", required=True, help="API base URL ending at /v1 or equivalent")
run_parser.add_argument("--api-key-env", help="Environment variable containing the API key")
run_parser.add_argument("--model", required=True)
run_parser.add_argument("--repeats", type=int, default=1)
run_parser.add_argument("--parallel-requests", type=int, default=1,
help="Maximum simultaneous model requests (1 to 16)")
run_parser.add_argument("--max-output-tokens", type=int, default=4096)
run_parser.add_argument("--token-field", choices=("max_tokens", "max_completion_tokens"),
default=token_field)
run_parser.add_argument("--reasoning-effort", choices=("low", "medium", "high"))
run_parser.add_argument("--timeout", type=int, default=180, help="Seconds allowed for one model response")
run_parser.add_argument("--cad-python", default=os.environ.get("CAD_PYTHON"))
run_parser.add_argument("--physics-python", default=os.environ.get("PHYSICS_PYTHON"))
run_parser.add_argument("--output", required=True)
args = parser.parse_args()
try:
if args.command == "list":
for task_id in task_ids():
print(f"{task_id}: {task_file(task_id, 'instruction.txt').decode().strip()}")
return
if args.command == "export-prompts":
export_prompts(args)
return
if not args.cad_python or not args.physics_python:
raise ValueError("Pass --cad-python and --physics-python, or set CAD_PYTHON and PHYSICS_PYTHON")
if args.command == "grade":
grade(args)
elif args.command == "grade-all":
grade_all(args)
elif args.command == "audit":
audit(args)
elif args.command in ("run", "run-openrouter"):
if not 1 <= args.repeats <= 3:
raise ValueError("Repeats must be between 1 and 3")
if not 1 <= args.parallel_requests <= 16:
raise ValueError("--parallel-requests must be between 1 and 16")
if args.max_output_tokens < 1 or args.timeout < 1:
raise ValueError("--max-output-tokens and --timeout must be positive")
run_model(args)
except (OSError, ValueError, SyntaxError, KeyError, IndexError, json.JSONDecodeError,
subprocess.TimeoutExpired) as exc:
parser.exit(1, f"FAIL: {exc}\n")
if __name__ == "__main__":
main()