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f1a4107 | 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 | from __future__ import annotations
import json
import os
import subprocess
import sys
from pathlib import Path
import pytest
pytest.importorskip("jax")
ROOT = Path(__file__).resolve().parents[1]
def test_tiny_sharding_probe_on_two_cpu_devices() -> None:
env = os.environ.copy()
env["FORCE_2_CPU"] = "1"
result = subprocess.run(
[sys.executable, str(ROOT / "scripts" / "tiny_sharding_probe.py")],
cwd=ROOT,
env=env,
text=True,
capture_output=True,
check=False,
)
assert result.returncode == 0, result.stdout + result.stderr
report = json.loads(result.stdout)
assert report["ok"] is True
assert len(report["devices"]) == 2
names = {case["name"] for case in report["cases"]}
assert names == {"column_sharded_matmul", "row_sharded_matmul", "replicated_reshard_matmul"}
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