DeepInfer/serve/server.sh
whn09 d8f7a2e898 Neuron: PR #147 OpenAI server (+ /v1/completions, Neuron worker setup), offline bench, MoE fixes (#26, #27, #29)
- serve/: the minimal OpenAI-compatible server of deepseek-ai/DeepInfer#147,
  with a Neuron worker setup (basic mode env, per-rank NeuronCore, fixed KV
  pool via --num-kv-blocks, no MTP lookahead) and a /v1/completions endpoint
  (prompt text or token ids, no chat template): what vllm bench serve
  --backend openai drives, as vllm-neuron#71's run_bench.py does.
- examples/neuron/bench_neuron.py: the same TTFT/TPOT matrix offline.
- static MoE: one packed fp32 all-gather instead of three (each 64-rank
  collective is ~2 ms of fixed latency a layer); a capacity-grouped expert
  path for prefill chunks (DEEPINFER_NEURON_MOE_CAPACITY, dense rerun on
  overflow; not yet validated on device).
- Sub-region timings at split() boundaries under DEEPINFER_NEURON_REGION_TIMING.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-23 16:23:28 +08:00

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#!/bin/bash
# Start/stop serve/openai_server.py as one process group, so stopping it also reaps the
# engine's helper processes (otherwise they outlive the frontend and keep the GPUs).
#
# serve/server.sh start [openai_server.py args...]
# serve/server.sh stop
set -euo pipefail
ROOT=$(cd "$(dirname "$0")/.." && pwd)
PIDFILE="$ROOT/serve/server.pgid"
LOG="${LOG:-$ROOT/serve.log}"
case "${1:-}" in
start)
shift
[ -s "$PIDFILE" ] && kill -0 -- "-$(cat "$PIDFILE")" 2>/dev/null && { echo "already running (pgid $(cat "$PIDFILE"))" >&2; exit 1; }
[ -f "$ROOT/env.sh" ] && source "$ROOT/env.sh" # optional local environment (venv, DEEPINFER_* vars)
: "${DEEPINFER_HF_MODEL_DIR:?set DEEPINFER_HF_MODEL_DIR to the local checkpoint directory}"
export CUDA_VISIBLE_DEVICES="${CUDA_VISIBLE_DEVICES:-0,1,2,3}"
setsid python -u "$ROOT/serve/openai_server.py" --model "$DEEPINFER_HF_MODEL_DIR" \
--served-model-name deepseek-ai/DeepSeek-V4.1-Flash-1017 "$@" > "$LOG" 2>&1 < /dev/null &
echo $! > "$PIDFILE"
port=8888 prev=
for a in "$@"; do [[ "$prev" == --port ]] && port=$a; prev=$a; done
until curl -fs "localhost:$port/health" >/dev/null 2>&1; do
kill -0 "$(cat "$PIDFILE")" 2>/dev/null || { echo "server died; see $LOG" >&2; exit 1; }
sleep 3
done
echo "ready (pgid $(cat "$PIDFILE"), log $LOG)"
;;
stop)
[ -s "$PIDFILE" ] || { echo "not running"; exit 0; }
pgid=$(cat "$PIDFILE")
kill -TERM -- "-$pgid" 2>/dev/null || true
for _ in $(seq 30); do kill -0 -- "-$pgid" 2>/dev/null || break; sleep 1; done
kill -KILL -- "-$pgid" 2>/dev/null || true
rm -f "$PIDFILE"
echo "stopped"
;;
*)
echo "usage: $0 start|stop" >&2; exit 2 ;;
esac