File size: 2,089 Bytes
dd138ec | 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 | #!/bin/bash
# Launch vLLM server for google/gemma-4-31B-it.
#
# Hardware: 2× L40S 48GB (TP=2). Note: Gemma shares the same GPU pair (0-1 by
# default here) as Magistral in the paper's triadic-sweep node layout. They
# cannot run simultaneously; stop one before starting the other.
# Default port: 8009. Override with PORT env var.
#
# Key settings:
# --tool-call-parser gemma4 — requires the custom jinja chat template
# --chat-template — path to tool_chat_template_gemma4.jinja
# tool_choice=auto — Gemma 4 returns empty tool_calls with 'required'
# --max-num-seqs 64 — tuned to avoid KV-cache saturation under
# concurrent multi-agent load
# --no-scheduler-reserve-full-isl — avoids a vLLM 0.19.0 scheduler deadlock
#
# Note on max_tokens: Gemma 4 output is capped at 512 tokens in the runner
# (compared to 1536 for other models) to limit KV-cache pressure.
set -euo pipefail
HF_HUB_CACHE="${HF_HUB_CACHE:-/data/hf_cache/hub}"
export HF_HUB_CACHE
VENV="${SAFEMASS_VENV:-$(dirname "$0")/../.venv}"
PORT="${PORT:-8009}"
LOGS="${LOGS_DIR:-/tmp/vllm_logs}"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
TEMPLATE="${GEMMA_CHAT_TEMPLATE:-${SCRIPT_DIR}/../oasis/tool_chat_template_gemma4.jinja}"
mkdir -p "$LOGS"
if [[ ! -f "$TEMPLATE" ]]; then
echo "ERROR: Gemma chat template not found at: $TEMPLATE" >&2
echo "Set GEMMA_CHAT_TEMPLATE env var or ensure oasis/tool_chat_template_gemma4.jinja exists." >&2
exit 1
fi
CUDA_VISIBLE_DEVICES="${CUDA_VISIBLE_DEVICES:-0,1}" \
"${VENV}/bin/python3" -m vllm.entrypoints.openai.api_server \
--model google/gemma-4-31B-it \
--served-model-name google/gemma-4-31B-it \
--tensor-parallel-size 2 \
--max-model-len 16384 \
--gpu-memory-utilization 0.90 \
--port "$PORT" \
--host 127.0.0.1 \
--trust-remote-code \
--enable-auto-tool-choice \
--tool-call-parser gemma4 \
--chat-template "$TEMPLATE" \
--max-num-seqs 64 \
--no-scheduler-reserve-full-isl \
>> "${LOGS}/vllm_gemma_${PORT}.log" 2>&1
|