disagg_flexkv.sh

#!/bin/bash
# SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
set -e
trap 'echo Cleaning up...; kill 0' EXIT

MODEL="Qwen/Qwen3-0.6B"
HTTP_PORT="${DYN_HTTP_PORT:-8000}"
SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
source "$SCRIPT_DIR/../../../common/launch_utils.sh"

print_launch_banner "Launching Disaggregated Serving + FlexKV (2 GPUs)" "$MODEL" "$HTTP_PORT"


# Run frontend
# dynamo.frontend accepts either --http-port flag or DYN_HTTP_PORT env var (defaults to 8000)
python -m dynamo.frontend &

# Run decode worker without FlexKV
CUDA_VISIBLE_DEVICES=0 python -m dynamo.vllm --model $MODEL --kv-transfer-config '{"kv_connector":"NixlConnector","kv_role":"kv_both"}' &

# Run prefill worker with FlexKV
DYN_VLLM_KV_EVENT_PORT=20081 \
VLLM_NIXL_SIDE_CHANNEL_PORT=20097 \
DYNAMO_USE_FLEXKV=1 \
FLEXKV_CPU_CACHE_GB=32 \
CUDA_VISIBLE_DEVICES=1 \
  python -m dynamo.vllm \
  --model $MODEL \
  --is-prefill-worker \
  --kv-transfer-config '{"kv_connector":"PdConnector","kv_role":"kv_both","kv_connector_extra_config":{"connectors":[{"kv_connector":"FlexKVConnectorV1","kv_role":"kv_both"},{"kv_connector":"NixlConnector","kv_role":"kv_both"}]},"kv_connector_module_path":"kvbm.vllm_integration.connector"}' \
  --kv-events-config '{"publisher":"zmq","topic":"kv-events","endpoint":"tcp://*:20081","enable_kv_cache_events":true}' &

# Exit on first worker failure; kill 0 in the EXIT trap tears down the rest
wait_any_exit