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39665bd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #!/usr/bin/env python3
"""Validate the standardized CFDBench dataset package."""
from __future__ import annotations
import argparse
import hashlib
import json
import sys
from collections import defaultdict
from pathlib import Path
import numpy as np
REPO_ROOT = Path(__file__).resolve().parents[1]
DATA_ROOT = REPO_ROOT / "data"
CHECKSUM_PATH = REPO_ROOT / "files_sha256.jsonl"
PROBLEMS = ("cavity", "tube", "dam", "cylinder")
SUBSETS = ("bc", "geo", "prop")
REQUIRED_CASE_FILES = ("case.json", "u.npy", "v.npy")
OPTIONAL_EXTENSIONS = {".png"}
def fail(message: str) -> None:
print(f"[FAIL] {message}")
raise SystemExit(1)
def ok(message: str) -> None:
print(f"[OK] {message}")
def warn(message: str) -> None:
print(f"[WARN] {message}")
def sha256_file(path: Path) -> str:
digest = hashlib.sha256()
with path.open("rb") as handle:
for chunk in iter(lambda: handle.read(1024 * 1024), b""):
digest.update(chunk)
return digest.hexdigest()
def iter_case_dirs() -> list[Path]:
case_dirs = []
for problem in PROBLEMS:
problem_dir = DATA_ROOT / problem
if not problem_dir.is_dir():
fail(f"missing problem directory: {problem_dir}")
for subset in SUBSETS:
subset_dir = problem_dir / subset
if subset_dir.is_dir():
cases = sorted(subset_dir.glob("case*"), key=lambda p: int(p.name[4:]))
if not cases:
fail(f"empty subset directory: {subset_dir}")
case_dirs.extend(cases)
return case_dirs
def validate_structure(sample_cases_per_subset: int) -> None:
if not DATA_ROOT.is_dir():
fail(f"dataset data root does not exist: {DATA_ROOT}")
counts = defaultdict(int)
sampled = 0
for problem in PROBLEMS:
for subset in SUBSETS:
subset_dir = DATA_ROOT / problem / subset
if not subset_dir.is_dir():
continue
cases = sorted(subset_dir.glob("case*"), key=lambda p: int(p.name[4:]))
counts[f"{problem}/{subset}"] = len(cases)
for case_dir in cases[:sample_cases_per_subset]:
for name in REQUIRED_CASE_FILES:
if not (case_dir / name).is_file():
fail(f"missing required case file: {case_dir / name}")
params = json.loads((case_dir / "case.json").read_text(encoding="utf-8"))
if not isinstance(params, dict) or not params:
fail(f"case.json must be a non-empty object: {case_dir / 'case.json'}")
u = np.load(case_dir / "u.npy", mmap_mode="r")
v = np.load(case_dir / "v.npy", mmap_mode="r")
if u.shape != v.shape:
fail(f"u/v shape mismatch: {case_dir}: {u.shape} vs {v.shape}")
if u.ndim != 3:
fail(f"u/v arrays must be 3D time/grid arrays: {case_dir}: {u.shape}")
if not np.issubdtype(u.dtype, np.number) or not np.issubdtype(v.dtype, np.number):
fail(f"u/v dtype must be numeric: {case_dir}: {u.dtype}, {v.dtype}")
if not np.isfinite(np.asarray(u[0])).all() or not np.isfinite(np.asarray(v[0])).all():
fail(f"first frame contains non-finite values: {case_dir}")
sampled += 1
if not counts:
fail("no CFDBench subsets found")
ok(f"dataset structure and sampled arrays are valid: {sum(counts.values())} cases, sampled {sampled}")
def verify_checksums(full_hash: bool) -> None:
if not CHECKSUM_PATH.exists():
warn(f"checksum manifest is not present: {CHECKSUM_PATH}")
return
records = []
for line in CHECKSUM_PATH.read_text(encoding="utf-8").splitlines():
if line.strip():
records.append(json.loads(line))
if not records:
fail("checksum manifest is empty")
for record in records:
path = REPO_ROOT / record["path"]
if not path.is_file():
fail(f"checksum entry points to missing file: {path}")
size = path.stat().st_size
if size != record["size"]:
fail(f"size mismatch for {path}: expected {record['size']}, got {size}")
if full_hash:
digest = sha256_file(path)
if digest != record["sha256"]:
fail(f"sha256 mismatch for {path}")
mode = "size+sha256" if full_hash else "size"
ok(f"checksum manifest verified in {mode} mode: {len(records)} files")
def main() -> int:
parser = argparse.ArgumentParser()
parser.add_argument("--sample-cases-per-subset", type=int, default=2)
parser.add_argument("--full-hash", action="store_true")
args = parser.parse_args()
if args.sample_cases_per_subset < 1:
fail("--sample-cases-per-subset must be positive")
validate_structure(args.sample_cases_per_subset)
verify_checksums(args.full_hash)
ok("dataset validation completed")
return 0
if __name__ == "__main__":
sys.exit(main())
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