Enable gated long context real trace replay

This commit is contained in:
2026-07-24 00:59:40 +08:00
parent 7aed90f9e6
commit 766f09d3ed
2 changed files with 483 additions and 0 deletions

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#!/usr/bin/env python3
"""Replay a private exact-trace anchor without emitting prompt text."""
from __future__ import annotations
import argparse
import asyncio
import hashlib
import json
import math
from pathlib import Path
from typing import Any
TARGET_PASS_RATE = 0.95
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser()
parser.add_argument("--host", default="127.0.0.1")
parser.add_argument("--port", type=int, required=True)
parser.add_argument("--requests-file", type=Path, required=True)
parser.add_argument("--output", type=Path, required=True)
parser.add_argument(
"--served-model",
default=None,
help="Optional server-side model alias used only for HTTP routing.",
)
parser.add_argument("--tpot-slo-ms", type=float, default=150.0)
parser.add_argument("--timeout-seconds", type=float, default=1800.0)
return parser.parse_args()
def percentile(values: list[float], fraction: float) -> float | None:
if not values:
return None
ordered = sorted(values)
return ordered[math.ceil(fraction * len(ordered)) - 1]
def ttft_slo_ms(input_tokens: int) -> float:
return 1000.0 + 1000.0 * input_tokens / 8000.0
def row_vector_sha256(rows: list[dict[str, Any]]) -> str:
digest = hashlib.sha256()
for row in rows:
digest.update(
json.dumps(
[
row["source_index"],
row["arrived_at"],
row["input_length"],
row["output_length"],
row["session_id"],
row["runtime_block_ids"],
],
separators=(",", ":"),
).encode()
)
digest.update(b"\n")
return digest.hexdigest()
async def request_one(
session: aiohttp.ClientSession,
row: dict[str, Any],
*,
scheduled_at: float,
benchmark_start: float,
tpot_slo_ms: float,
served_model: str | None,
) -> dict[str, Any]:
loop = asyncio.get_running_loop()
delay = scheduled_at - loop.time()
if delay > 0:
await asyncio.sleep(delay)
admitted_at = loop.time()
record: dict[str, Any] = {
"source_index": int(row["source_index"]),
"session_id": int(row["session_id"]),
"scheduled_s": scheduled_at - benchmark_start,
"admitted_s": admitted_at - benchmark_start,
"admission_lag_ms": (admitted_at - scheduled_at) * 1000.0,
"input_tokens": int(row["input_length"]),
"requested_output_tokens": int(row["output_length"]),
"success": False,
}
body = dict(row["body"])
if served_model is not None:
body["model"] = served_model
body.update(
{
"temperature": 0,
"stream": True,
"stream_options": {"include_usage": True},
"return_token_ids": True,
}
)
try:
started = loop.time()
async with session.post("/v1/completions", json=body) as response:
if response.status != 200:
detail = (await response.text())[:1000]
raise RuntimeError(f"HTTP {response.status}: {detail}")
first_token_at = None
last_token_at = None
streamed_tokens = 0
usage = None
while True:
raw = await response.content.readline()
if not raw:
break
line = raw.decode(errors="replace").strip()
if not line.startswith("data:"):
continue
data = line[5:].strip()
if data == "[DONE]":
break
payload = json.loads(data)
if payload.get("usage"):
usage = payload["usage"]
emitted = 0
for choice in payload.get("choices") or []:
token_ids = choice.get("token_ids") or []
emitted += len(token_ids) if token_ids else int(bool(choice.get("text")))
if emitted:
now = loop.time()
first_token_at = first_token_at or now
last_token_at = now
streamed_tokens += emitted
finished = loop.time()
if first_token_at is None or last_token_at is None or usage is None:
raise RuntimeError("missing streaming token or usage")
actual_input = int(usage["prompt_tokens"])
actual_output = int(usage["completion_tokens"])
if actual_input != int(row["input_length"]) or actual_output != int(
row["output_length"]
):
raise RuntimeError(f"usage mismatch: {actual_input}+{actual_output}")
ttft = (first_token_at - started) * 1000.0
tpot = (
(last_token_at - first_token_at) * 1000.0 / (actual_output - 1)
if actual_output > 1
else None
)
record.update(
{
"success": True,
"actual_input_tokens": actual_input,
"actual_output_tokens": actual_output,
"streamed_token_count": streamed_tokens,
"ttft_ms": ttft,
"tpot_ms": tpot,
"e2e_ms": (finished - started) * 1000.0,
"slo_pass": ttft <= ttft_slo_ms(actual_input)
and (tpot is None or tpot <= tpot_slo_ms),
}
)
except Exception as error:
record.update(
{
"error": f"{type(error).__name__}: {error}",
"slo_pass": False,
}
)
return record
async def replay(args: argparse.Namespace, rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
import aiohttp
timeout = aiohttp.ClientTimeout(total=args.timeout_seconds)
connector = aiohttp.TCPConnector(limit=0, ttl_dns_cache=300, force_close=True)
benchmark_start = asyncio.get_running_loop().time() + 2.0
async with aiohttp.ClientSession(
base_url=f"http://{args.host}:{args.port}",
timeout=timeout,
connector=connector,
) as session:
tasks = [
asyncio.create_task(
request_one(
session,
row,
scheduled_at=benchmark_start + float(row["arrived_at"]),
benchmark_start=benchmark_start,
tpot_slo_ms=args.tpot_slo_ms,
served_model=args.served_model,
)
)
for row in rows
]
return await asyncio.gather(*tasks)
def main() -> None:
args = parse_args()
if args.tpot_slo_ms <= 0 or args.timeout_seconds <= 0:
raise ValueError("SLO and timeout must be positive")
rows = [json.loads(line) for line in args.requests_file.open() if line.strip()]
if not rows:
raise ValueError("requests file is empty")
arrivals = [float(row["arrived_at"]) for row in rows]
if any(right < left for left, right in zip(arrivals, arrivals[1:])):
raise ValueError("request arrival order drift")
requests = asyncio.run(replay(args, rows))
requests.sort(key=lambda row: int(row["source_index"]))
completed = [row for row in requests if row["success"]]
passed = sum(bool(row["slo_pass"]) for row in requests)
ttfts = [float(row["ttft_ms"]) for row in completed]
tpots = [
float(row["tpot_ms"])
for row in completed
if row["tpot_ms"] is not None
]
pass_rate = passed / len(requests)
payload = {
"schema": "qwen30-exact-trace-anchor-v1",
"contract": {
"requests_file": str(args.requests_file.resolve()),
"requests_file_sha256": hashlib.sha256(
args.requests_file.read_bytes()
).hexdigest(),
"row_vector_sha256": row_vector_sha256(rows),
"requests": len(rows),
"first_arrival_s": arrivals[0],
"last_arrival_s": arrivals[-1],
"arrival": "original_trace_timestamp_and_order",
"input_output_prompt": "exact_source_values",
"served_model_alias": args.served_model,
"http_connection_reuse": False,
"ttft_slo": "1000ms + 1000ms * input_tokens / 8000",
"tpot_slo_ms": args.tpot_slo_ms,
"target_pass_rate": TARGET_PASS_RATE,
"prompt_text_emitted": False,
},
"summary": {
"completed": len(completed),
"failed": len(requests) - len(completed),
"passed": passed,
"pass_rate": pass_rate,
"feasible": pass_rate >= TARGET_PASS_RATE,
"ttft_p50_ms": percentile(ttfts, 0.50),
"ttft_p95_ms": percentile(ttfts, 0.95),
"tpot_p50_ms": percentile(tpots, 0.50),
"tpot_p95_ms": percentile(tpots, 0.95),
"admission_lag_p95_ms": percentile(
[float(row["admission_lag_ms"]) for row in requests], 0.95
),
},
"requests": requests,
}
args.output.parent.mkdir(parents=True, exist_ok=True)
args.output.write_text(json.dumps(payload, indent=2, sort_keys=True) + "\n")
print(json.dumps(payload["summary"], sort_keys=True), flush=True)
if len(completed) != len(requests):
raise SystemExit(2)
if __name__ == "__main__":
main()

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#!/usr/bin/env bash
set -euo pipefail
RHO="${1:?usage: run_full_real.sh RHO CONFIG TRIAL PORT}"
CONFIG="${2:?usage: run_full_real.sh RHO CONFIG TRIAL PORT}"
TRIAL="${3:?usage: run_full_real.sh RHO CONFIG TRIAL PORT}"
PORT="${4:?usage: run_full_real.sh RHO CONFIG TRIAL PORT}"
CONTROL_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
VENV_ROOT="${VENV_ROOT:-/home/admin/cpfs/wjh/venvs/vllm-0.20.0-cu129-workload-regime-v2}"
MODEL_ROOT="${MODEL_ROOT:-/home/admin/cpfs/wjh/models/Qwen/Qwen3-30B-A3B}"
SERVED_MODEL="qwen3-30b-s3-real-full"
MAX_MODEL_LEN="${MAX_MODEL_LEN:-40960}"
ALLOW_SYNTHETIC_PROMPTS="${ALLOW_SYNTHETIC_PROMPTS:-false}"
ALLOW_LONG_CONTEXT_SERVER="${ALLOW_LONG_CONTEXT_SERVER:-false}"
FLASHINFER_WORKSPACE_BASE="/tmp/wjh/flashinfer-frontier-s3-real-v0-${RHO}-${CONFIG}-t${TRIAL}"
SERVER_PID=""
TELEMETRY_PID=""
[[ "${RHO}" =~ ^[A-Za-z0-9._-]+$ ]] || {
echo "ERROR: rho label contains unsupported characters: ${RHO}" >&2; exit 1;
}
if [[ -n "${TRACE_INPUT_ROOT:-}" ]]; then
INPUT_NAME=""
else
case "${RHO}" in
0p00125) INPUT_NAME="canary-r0p00125" ;;
0p0025) INPUT_NAME="canary-r0p0025" ;;
0p005) INPUT_NAME="full-r0p005" ;;
0p01) INPUT_NAME="full-r0p01" ;;
0p02) INPUT_NAME="full-r0p02" ;;
*) echo "ERROR: unsupported built-in rho ${RHO}" >&2; exit 1 ;;
esac
fi
# Generic tp<N>_mns<M> parser: TP = tensor-parallel size, MNS = max-num-seqs.
if [[ "${CONFIG}" =~ ^tp([0-9]+)_mns([0-9]+)$ ]]; then
TP="${BASH_REMATCH[1]}"; MNS="${BASH_REMATCH[2]}"
else
echo "ERROR: unsupported config ${CONFIG}" >&2; exit 1
fi
[[ "${TRIAL}" == "1" || "${TRIAL}" == "2" ]] || {
echo "ERROR: trial must be 1 or 2" >&2; exit 1;
}
if (( MAX_MODEL_LEN > 40960 )) && [[ "${ALLOW_LONG_CONTEXT_SERVER}" != "true" ]]; then
echo "ERROR: MAX_MODEL_LEN>40960 requires ALLOW_LONG_CONTEXT_SERVER=true" >&2
exit 1
fi
TRACE_INPUT_ROOT="${TRACE_INPUT_ROOT:-${CONTROL_ROOT}/inputs/${INPUT_NAME}}"
REQUESTS_FILE="${TRACE_INPUT_ROOT}/real_requests.jsonl"
INPUT_MANIFEST="${TRACE_INPUT_ROOT}/manifest.json"
OUTPUT_ROOT="${OUTPUT_ROOT:-${CONTROL_ROOT}/outputs/full-real/rho-${RHO}/${CONFIG}/trial-${TRIAL}}"
for path in "${VENV_ROOT}/bin/python" "${VENV_ROOT}/bin/vllm" \
"${MODEL_ROOT}/config.json" "${REQUESTS_FILE}" "${INPUT_MANIFEST}" \
"${CONTROL_ROOT}/qwen30_exact_trace_client.py" \
"${CONTROL_ROOT}/qwen30_prefill_client.py"; do
[[ -e "${path}" ]] || { echo "ERROR: missing ${path}" >&2; exit 1; }
done
[[ ! -e "${OUTPUT_ROOT}" ]] || { echo "ERROR: refusing to overwrite ${OUTPUT_ROOT}" >&2; exit 1; }
mkdir -p "${OUTPUT_ROOT}/logs" "${OUTPUT_ROOT}/provenance" \
"${OUTPUT_ROOT}/results" "${OUTPUT_ROOT}/metrics" \
"${OUTPUT_ROOT}/telemetry" "${FLASHINFER_WORKSPACE_BASE}"
exec > >(tee -a "${OUTPUT_ROOT}/logs/controller.log") 2>&1
cleanup() {
if [[ -n "${TELEMETRY_PID}" ]] && kill -0 "${TELEMETRY_PID}" 2>/dev/null; then
kill "${TELEMETRY_PID}" 2>/dev/null || true
fi
TELEMETRY_PID=""
if [[ -n "${SERVER_PID}" ]] && kill -0 "${SERVER_PID}" 2>/dev/null; then
kill -TERM -- "-${SERVER_PID}" 2>/dev/null || true
for _ in $(seq 1 30); do
kill -0 "${SERVER_PID}" 2>/dev/null || break
sleep 1
done
kill -KILL -- "-${SERVER_PID}" 2>/dev/null || true
fi
SERVER_PID=""
}
trap cleanup EXIT INT TERM
IFS=',' read -r -a GPU_IDS <<< "${CUDA_VISIBLE_DEVICES:?fleet GPU allocation is required}"
[[ "${#GPU_IDS[@]}" -eq "${TP}" ]] || {
echo "ERROR: ${CONFIG} requires exactly ${TP} GPUs" >&2; exit 1;
}
nvidia-smi --query-gpu=index,name,memory.total,memory.used,utilization.gpu \
--format=csv,noheader,nounits > "${OUTPUT_ROOT}/provenance/gpus.before.csv"
[[ "$(wc -l < "${OUTPUT_ROOT}/provenance/gpus.before.csv")" -eq 8 ]] || {
echo "ERROR: expected eight GPUs on host" >&2; exit 1;
}
grep -vq 'NVIDIA H20' "${OUTPUT_ROOT}/provenance/gpus.before.csv" && {
echo "ERROR: expected eight NVIDIA H20 GPUs" >&2; exit 1;
}
nvidia-smi --query-compute-apps=pid,process_name,used_memory --format=csv,noheader,nounits \
> "${OUTPUT_ROOT}/provenance/compute-apps.before.csv" || true
if grep -Eq '^[[:space:]]*[0-9]+' "${OUTPUT_ROOT}/provenance/compute-apps.before.csv"; then
echo "ERROR: host is no longer fully idle" >&2
exit 1
fi
"${VENV_ROOT}/bin/python" - <<'PY' > "${OUTPUT_ROOT}/provenance/runtime.versions"
import torch, transformers, vllm
print(f"vllm={vllm.__version__}")
print(f"torch={torch.__version__}")
print(f"torch_cuda={torch.version.cuda}")
print(f"transformers={transformers.__version__}")
if vllm.__version__ != "0.20.0" or torch.version.cuda != "12.9":
raise SystemExit("runtime version mismatch")
PY
env | sort > "${OUTPUT_ROOT}/provenance/environment.txt"
ps -eo user,pid,ppid,etimes,pcpu,pmem,rss,args --sort=pid \
> "${OUTPUT_ROOT}/provenance/processes.before.txt"
sha256sum "${REQUESTS_FILE}" "${INPUT_MANIFEST}" \
"${CONTROL_ROOT}/qwen30_exact_trace_client.py" \
"${CONTROL_ROOT}/qwen30_prefill_client.py" "${BASH_SOURCE[0]}" \
> "${OUTPUT_ROOT}/provenance/sources.sha256"
INPUT_MANIFEST="${INPUT_MANIFEST}" REQUESTS_FILE="${REQUESTS_FILE}" \
MAX_MODEL_LEN="${MAX_MODEL_LEN}" \
ALLOW_SYNTHETIC_PROMPTS="${ALLOW_SYNTHETIC_PROMPTS}" \
"${VENV_ROOT}/bin/python" - <<'PY'
import json
import os
from pathlib import Path
manifest = json.loads(Path(os.environ["INPUT_MANIFEST"]).read_text())
source_block_size = int(manifest["source_block_size"])
if source_block_size <= 0 or source_block_size % 16 or manifest["target_block_size"] != 16:
raise SystemExit("source-to-16 block-size contract failed")
failures = {
key: value for key, value in manifest["block_contract"].items()
if key.endswith(("mismatches", "collisions", "conflicts"))
}
if any(failures.values()):
raise SystemExit(f"block/hash contract failed: {failures}")
if (
manifest["prompt_contract"]["synthetic_fallback_requests"]
and os.environ["ALLOW_SYNTHETIC_PROMPTS"].lower() != "true"
):
raise SystemExit("full real requires real prompt text for every request")
with Path(os.environ["REQUESTS_FILE"]).open() as stream:
max_request_tokens = max(
int(row["input_length"]) + int(row["output_length"])
for row in map(json.loads, stream)
)
if max_request_tokens > int(os.environ["MAX_MODEL_LEN"]):
raise SystemExit(
f"trace max request tokens {max_request_tokens} exceeds "
f"MAX_MODEL_LEN={os.environ['MAX_MODEL_LEN']}"
)
PY
export TOKENIZERS_PARALLELISM=false VLLM_USE_V1=1 TORCH_CUDA_ARCH_LIST=9.0 PREFIX_CACHING=true
export HF_HUB_OFFLINE=1 TRANSFORMERS_OFFLINE=1 FLASHINFER_WORKSPACE_BASE
if [[ "${ALLOW_LONG_CONTEXT_SERVER}" == "true" ]]; then
export VLLM_ALLOW_LONG_MAX_MODEL_LEN=1
fi
ulimit -n 65536
setsid "${VENV_ROOT}/bin/vllm" serve "${MODEL_ROOT}" \
--host 127.0.0.1 --port "${PORT}" --served-model-name "${SERVED_MODEL}" \
--tensor-parallel-size "${TP}" --gpu-memory-utilization 0.92 \
--max-model-len "${MAX_MODEL_LEN}" --max-num-batched-tokens 8192 --max-num-seqs "${MNS}" \
--enable-prefix-caching --block-size 16 --enable-chunked-prefill --no-enable-log-requests \
--enable-logging-iteration-details \
> "${OUTPUT_ROOT}/logs/server.log" 2>&1 &
SERVER_PID=$!
READY=0
for _ in $(seq 1 900); do
if curl -fsS --max-time 2 "http://127.0.0.1:${PORT}/v1/models" \
> "${OUTPUT_ROOT}/results/models.json" 2>/dev/null; then READY=1; break; fi
kill -0 "${SERVER_PID}" 2>/dev/null || { tail -200 "${OUTPUT_ROOT}/logs/server.log"; exit 1; }
sleep 3
done
[[ "${READY}" -eq 1 ]] || { echo "ERROR: server readiness timeout" >&2; exit 1; }
"${VENV_ROOT}/bin/python" "${CONTROL_ROOT}/qwen30_prefill_client.py" \
--port "${PORT}" --served-model "${SERVED_MODEL}" --model-path "${MODEL_ROOT}" \
--rate 1 --requests 4 --input-tokens 512 --output-tokens 1 \
--output "${OUTPUT_ROOT}/results/warmup.json"
curl -fsS "http://127.0.0.1:${PORT}/metrics" > "${OUTPUT_ROOT}/metrics/before.prom"
(
while true; do
ts=$(date -u +%s.%N)
snap=$(curl -fsS "http://127.0.0.1:${PORT}/metrics" 2>/dev/null \
| grep -E 'vllm:(num_requests_running|num_requests_waiting|prefix_cache_hits|prefix_cache_queries|gpu_prefix_cache_hit_rate|gpu_cache_usage)' \
| tr '\n' '|')
printf '{"wall_time_epoch_s": %s, "metrics": "%s"}\n' "${ts}" "${snap}" \
>> "${OUTPUT_ROOT}/telemetry/server-state.jsonl"
sleep 15
done
) &
TELEMETRY_PID=$!
"${VENV_ROOT}/bin/python" "${CONTROL_ROOT}/qwen30_exact_trace_client.py" \
--port "${PORT}" --requests-file "${REQUESTS_FILE}" --served-model "${SERVED_MODEL}" \
--output "${OUTPUT_ROOT}/results/result.json" --tpot-slo-ms 150 \
--timeout-seconds 5400
kill "${TELEMETRY_PID}" 2>/dev/null || true
TELEMETRY_PID=""
curl -fsS "http://127.0.0.1:${PORT}/metrics" > "${OUTPUT_ROOT}/metrics/after.prom"
INPUT_MANIFEST="${INPUT_MANIFEST}" OUTPUT_ROOT="${OUTPUT_ROOT}" \
"${VENV_ROOT}/bin/python" - <<'PY'
import json
import os
from pathlib import Path
manifest = json.loads(Path(os.environ["INPUT_MANIFEST"]).read_text())
result = json.loads((Path(os.environ["OUTPUT_ROOT"]) / "results/result.json").read_text())
if result["contract"]["row_vector_sha256"] != manifest["paired_row_vector_sha256"]:
raise SystemExit("real/sim paired row-vector digest mismatch")
if result["contract"]["requests"] != manifest["requests"]:
raise SystemExit("real/sim request-count mismatch")
if not all(request["success"] for request in result["requests"]):
raise SystemExit("one or more requests failed")
PY
cleanup
nvidia-smi --query-gpu=index,name,uuid,driver_version,memory.total,memory.used,utilization.gpu \
--format=csv,noheader,nounits > "${OUTPUT_ROOT}/provenance/gpus.after.csv"
find "${OUTPUT_ROOT}" -type f ! -path '*/provenance/artifacts.sha256' -print0 \
| sort -z | xargs -0 sha256sum > "${OUTPUT_ROOT}/provenance/artifacts.sha256"
echo "FULL_REAL_COMPLETE rho=${RHO} config=${CONFIG} trial=${TRIAL}"