Gahow Wang
d5b276180d
Workload-conditioned operator profiling on patched vLLM 0.24.0 + Qwen3-30B-A3B/H20. H1b PASS (irregular patterns carry +23-45pp R64 raggedness, 8-45% token-efficiency loss vs rectangular controls); mechanism decomposition kills the padding narrative and finds the arrival-uniformization artifact (-12.9%); cross-version churn surface shows TP2/MNS64 -29.4% across vLLM 0.20->0.24 while the argmax held. Raw Layer-1 JSONL streams (507 MB) stay on disk, git-ignored; footer sidecars and metrics are tracked. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
354 lines
13 KiB
Python
354 lines
13 KiB
Python
#!/usr/bin/env python3
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from __future__ import annotations
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import asyncio
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import importlib.util
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import json
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import sys
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import tempfile
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import unittest
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from unittest import mock
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from pathlib import Path
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from types import SimpleNamespace
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from aiohttp import web
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HERE = Path(__file__).parent
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def load_module(name: str, filename: str):
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spec = importlib.util.spec_from_file_location(name, HERE / filename)
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module = importlib.util.module_from_spec(spec)
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sys.modules[name] = module
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assert spec.loader is not None
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spec.loader.exec_module(module)
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return module
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client = load_module("phase3_client", "opprof_phase3_client.py")
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controller = load_module("phase3_controller", "opprof_phase3_controller.py")
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def rows(n: int, arrival: str = "steady") -> list[dict]:
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return [
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{
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"schema": 1,
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"request_id": f"T-{i:05d}",
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"pattern_id": "T",
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"kind": "synthetic",
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"input_tokens": 8,
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"output_tokens": 2,
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"arrival": arrival,
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"token_seed": i + 1,
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}
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for i in range(n)
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]
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class MockServer:
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def __init__(self) -> None:
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self.active = 0
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self.max_active = 0
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self.payloads = []
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self.runner = None
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self.port = None
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async def completion(self, request):
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payload = await request.json()
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self.payloads.append(payload)
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self.active += 1
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self.max_active = max(self.max_active, self.active)
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await asyncio.sleep(0.01)
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response = web.StreamResponse(
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status=200, headers={"Content-Type": "text/event-stream"}
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)
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await response.prepare(request)
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await response.write(
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b'data: {"choices":[{"text":"x"}],"usage":null}\n\n'
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)
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usage = json.dumps(
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{
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"choices": [],
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"usage": {
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"prompt_tokens": len(payload["prompt"]),
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"completion_tokens": payload["max_tokens"],
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},
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}
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).encode()
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await response.write(b"data: " + usage + b"\n\n")
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await response.write(b"data: [DONE]\n\n")
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await response.write_eof()
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self.active -= 1
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return response
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async def start(self):
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app = web.Application()
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app.router.add_post("/v1/completions", self.completion)
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self.runner = web.AppRunner(app)
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await self.runner.setup()
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site = web.TCPSite(self.runner, "127.0.0.1", 0)
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await site.start()
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self.port = site._server.sockets[0].getsockname()[1]
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async def stop(self):
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await self.runner.cleanup()
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def run_args(
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manifest: Path,
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result_dir: Path,
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port: int,
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load_point: str = "saturation",
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saturation_result: Path | None = None,
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):
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return SimpleNamespace(
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manifest=str(manifest),
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base_url=f"http://127.0.0.1:{port}",
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model="mock",
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load_point=load_point,
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request_rate="inf" if load_point == "saturation" else None,
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saturation_result=None if saturation_result is None else str(saturation_result),
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rate_fraction=0.60,
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max_concurrency=3,
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ignore_eos=True,
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temperature=0,
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warmup_seconds=0.04,
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clean_segment_seconds=0.04,
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num_clean_segments=3,
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profile_after_clean=False,
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num_profile_windows=0,
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profile_warmup_iterations=2,
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profile_active_iterations=8,
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profile_trace_dir=None,
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profile_timeout_seconds=1,
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recovery_seconds=0,
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post_clean_seconds=0,
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drain_timeout_seconds=1,
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workload_seed=20260712,
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server_seed=20260712,
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result_dir=str(result_dir),
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)
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class Phase3ToolTests(unittest.TestCase):
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def test_synthetic_prompt_exact_and_unique_early_prefix(self):
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generated = [client.synthetic_prompt(row) for row in rows(200)]
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self.assertTrue(all(len(value) == 8 for value in generated))
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self.assertEqual(len({tuple(value[:3]) for value in generated}), 200)
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def test_p05_manifest_has_exact_half_modes(self):
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with tempfile.TemporaryDirectory() as tmp:
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out = Path(tmp) / "P05.jsonl"
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args = SimpleNamespace(
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id="P05",
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kind="synthetic",
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input_uniform=None,
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input_fixed=None,
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input_mixture='{"uniform:128:512":0.5,"uniform:4096:8192":0.5}',
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output_fixed=64,
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prefix="none",
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arrival="steady",
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num_requests=100,
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workload_seed=20260712,
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num_prefixes=0,
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prefix_len=0,
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suffix_fixed=0,
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out=str(out),
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)
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client.materialize(args)
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manifest = client.load_manifest(out)
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self.assertEqual(sum(r["input_tokens"] <= 512 for r in manifest), 50)
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self.assertEqual(sum(r["input_tokens"] >= 4096 for r in manifest), 50)
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def test_prefix_pool_balanced(self):
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with tempfile.TemporaryDirectory() as tmp:
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out = Path(tmp) / "P08.jsonl"
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args = SimpleNamespace(
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id="P08",
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kind="prefix-pool",
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input_uniform=None,
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input_fixed=None,
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input_mixture=None,
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output_fixed=512,
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prefix="none",
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arrival="burst:8",
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num_requests=80,
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workload_seed=20260712,
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num_prefixes=8,
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prefix_len=1024,
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suffix_fixed=256,
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out=str(out),
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)
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client.materialize(args)
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manifest = client.load_manifest(out)
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counts = {i: 0 for i in range(8)}
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for row in manifest:
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counts[row["prefix_id"]] += 1
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self.assertEqual(row["input_tokens"], 1280)
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self.assertEqual(set(counts.values()), {10})
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def test_fixed_duration_saturation_and_redaction(self):
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async def case():
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with tempfile.TemporaryDirectory() as tmp:
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root = Path(tmp)
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manifest = root / "m.jsonl"
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client.atomic_jsonl(manifest, rows(1000))
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mock = MockServer()
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await mock.start()
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try:
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result = await client.run_load(
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run_args(manifest, root / "result", mock.port)
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)
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finally:
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await mock.stop()
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self.assertEqual(result["max_in_flight"], 3)
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self.assertEqual(mock.max_active, 3)
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self.assertAlmostEqual(result["clean"]["duration_s"], 0.12, places=9)
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self.assertEqual(len(result["segments"]), 3)
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self.assertLessEqual(result["drain_seconds"], 1)
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self.assertTrue(
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all(p["max_tokens"] == 2 and p["ignore_eos"] for p in mock.payloads)
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)
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text = (root / "result/requests.jsonl").read_text()
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self.assertNotIn('"prompt":', text)
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self.assertNotIn('"text":', text)
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asyncio.run(case())
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def test_drain_timeout_is_a_hard_sanity_failure(self):
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async def case():
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with tempfile.TemporaryDirectory() as tmp:
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root = Path(tmp)
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manifest = root / "m.jsonl"
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client.atomic_jsonl(manifest, rows(1000))
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mock = MockServer()
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await mock.start()
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try:
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args = run_args(manifest, root / "result", mock.port)
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args.drain_timeout_seconds = 0
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with self.assertRaisesRegex(RuntimeError, "drain_within_timeout"):
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await client.run_load(args)
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finally:
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await mock.stop()
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sanity = json.loads((root / "result/sanity.json").read_text())
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self.assertFalse(sanity["invariants"]["drain_within_timeout"])
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asyncio.run(case())
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def test_burst_schedule_is_eight_at_once(self):
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async def case():
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with tempfile.TemporaryDirectory() as tmp:
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root = Path(tmp)
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manifest = root / "m.jsonl"
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client.atomic_jsonl(manifest, rows(1000, "burst:8"))
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sat = root / "sat.json"
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client.atomic_json(
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sat, {"clean": {"completed_throughput_rps": 100.0}}
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)
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mock = MockServer()
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await mock.start()
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try:
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args = run_args(
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manifest, root / "result", mock.port, "moderate", sat
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)
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args.warmup_seconds = 0
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args.clean_segment_seconds = 0.4 / 3
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result = await client.run_load(args)
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finally:
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await mock.stop()
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records = [
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json.loads(line)
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for line in (root / "result/requests.jsonl").read_text().splitlines()
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]
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groups = {}
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for record in records:
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groups.setdefault(round(record["scheduled_s"], 6), 0)
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groups[round(record["scheduled_s"], 6)] += 1
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self.assertTrue(all(value == 8 for value in groups.values()))
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starts = sorted(groups)
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if len(starts) > 1:
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self.assertAlmostEqual(starts[1] - starts[0], 8 / 60, places=5)
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self.assertAlmostEqual(result["request_rate"], 60.0)
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asyncio.run(case())
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def test_manifest_exhaustion_stops_instead_of_wrapping(self):
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async def case():
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with tempfile.TemporaryDirectory() as tmp:
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root = Path(tmp)
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manifest = root / "m.jsonl"
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client.atomic_jsonl(manifest, rows(2))
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mock = MockServer()
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await mock.start()
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try:
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with self.assertRaises(client.ManifestExhausted):
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await client.run_load(
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run_args(manifest, root / "result", mock.port)
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)
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finally:
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await mock.stop()
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asyncio.run(case())
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def test_cpu_affinity_sets_are_disjoint_and_cover_host(self):
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values = []
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for spec in controller.CPU_MAP.values():
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lo, hi = [int(x) for x in spec.split("-")]
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values.extend(range(lo, hi + 1))
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self.assertEqual(sorted(values), list(range(160)))
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self.assertEqual(len(values), len(set(values)))
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def test_kernel_mapping_priority(self):
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cases = {
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"void vllm::moe::topkGating": "moe_router",
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"ncclDevKernel_AllReduce": "collective",
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"flash_fwd_kernel": "attention",
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"nvjet_sm90_tst": "moe_gemm",
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"argmax_kernel": "sampler",
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"cutlass_gemm": "dense_gemm",
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"triton_red_fused_add_rms_norm": "norm_elementwise",
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"cache_swap_kernel": "kv_memory",
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"unknown": "other",
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}
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self.assertEqual(
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{name: controller.classify_kernel(name) for name in cases}, cases
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)
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def test_atomic_state_replacement(self):
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with tempfile.TemporaryDirectory() as tmp:
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path = Path(tmp) / "state.json"
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controller.atomic_json(path, {"schema": 1, "value": 1})
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controller.atomic_json(path, {"schema": 1, "value": 2})
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self.assertEqual(json.loads(path.read_text())["value"], 2)
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self.assertFalse(list(path.parent.glob("*.tmp.*")))
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def test_fingerprint_survives_json_roundtrip(self):
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original_run_text = controller.run_text
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original_hash = controller.sha256_file
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try:
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controller.run_text = lambda *args, **kwargs: "deadbeef\n"
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controller.sha256_file = lambda path: "a" * 64
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fingerprint = controller.make_fingerprint()
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finally:
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controller.run_text = original_run_text
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controller.sha256_file = original_hash
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self.assertEqual(json.loads(json.dumps(fingerprint)), fingerprint)
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self.assertEqual(set(fingerprint["cpu_map"]), {str(i) for i in range(8)})
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def test_server_shutdown_signals_parent_before_group(self):
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process = SimpleNamespace(pid=12345, poll=lambda: None)
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with (
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mock.patch.object(controller.os, "kill") as kill,
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mock.patch.object(controller.os, "killpg") as killpg,
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mock.patch.object(controller, "_process_group_alive", return_value=False),
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):
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controller.stop_servers([process])
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kill.assert_called_once_with(12345, controller.signal.SIGINT)
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killpg.assert_not_called()
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if __name__ == "__main__":
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unittest.main(verbosity=2)
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