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Note
Day-0 Nemotron 3 Ultra recipes available. Tested and performance optimized Kubernetes deployment paths for Nemotron 3 Ultra are merged to main for vLLM, with a prebuilt container image published on NGC.
Recipes include KV-aware routing, multi-token prediction (MTP), and disaggregated prefill/decode
The open-source, datacenter-scale inference stack. Dynamo is the orchestration layer above inference engines — it doesn't replace SGLang, TensorRT-LLM, or vLLM, it turns them into a coordinated multi-node inference system. Disaggregated serving, intelligent routing, multi-tier KV caching, and automatic scaling work together to maximize throughput and minimize latency for LLM, reasoning, multimodal, and video generation workloads.
Built in Rust for performance, Python for extensibility.
If you're running a single model on a single GPU, your inference engine alone is probably sufficient.
Feature support at a glance:
| SGLang | TensorRT-LLM | vLLM | |
|---|---|---|---|
| Disaggregated Serving | ✅ | ✅ | ✅ |
| KV-Aware Routing | ✅ | ✅ | ✅ |
| SLA-Based Planner | ✅ | ✅ | ✅ |
| KVBM | 🚧 | ✅ | ✅ |
| Multimodal | ✅ | ✅ | ✅ |
| Tool Calling | ✅ | ✅ | ✅ |
Full Feature Matrix → — LoRA, request migration, speculative decoding, and feature interactions.
| Result | Context |
|---|---|
| 7x higher throughput per GPU | DeepSeek R1 on GB200 NVL72 w/ Dynamo vs B200 without (InferenceX) |
| 7x faster model startup | ModelExpress weight streaming (DeepSeek-V3 on H200) |
| 2x faster time to first token | KV-aware routing, Qwen3-Coder 480B (Baseten benchmark) |
| 80% fewer SLA breaches | Planner autoscaling at 5% lower TCO (Alibaba APSARA 2025 @ 2:50:00) |
| 750x higher throughput | DeepSeek-R1 on GB300 NVL72 (InferenceXv2) |
Most inference engines optimize a single GPU or a single node. Dynamo is the orchestration layer above them — it turns a cluster of GPUs into a coordinated inference system.
| Capability | What it does | Why it matters |
|---|---|---|
| Disaggregated Prefill/Decode | Separates prefill and decode into independently scalable GPU pools | Maximizes GPU utilization; each phase runs on hardware tuned for its workload |
| KV-Aware Routing | Routes requests based on worker load and KV cache overlap | Eliminates redundant prefill computation — 2x faster TTFT |
| KV Block Manager (KVBM) | Offloads KV cache across GPU → CPU → SSD → remote storage | Extends effective context length beyond GPU memory |
| ModelExpress | Streams model weights GPU-to-GPU via NIXL/NVLink | 7x faster cold-start for new replicas |
| Planner | SLA-driven autoscaler that profiles workloads and right-sizes pools | Meets latency targets at minimum total cost of ownership (TCO) |
| Grove | K8s operator for topology-aware gang scheduling (NVL72) | Places workloads optimally across racks, hosts, and NUMA nodes |
| AIConfigurator | Simulates 10K+ deployment configs in seconds | Finds optimal serving config without burning GPU-hours |
| Fault Tolerance | Canary health checks + in-flight request migration | Workers fail; user requests don't |
Dynamo can expose traffic through two Kubernetes request routing topologies. Both expose an OpenAI-compatible API and support the same backends, disaggregated serving, and KV-aware routing.
| Topology | What it is | When to use |
|---|---|---|
| Dynamo-native Frontend routing | The Dynamo Frontend serves HTTP and the integrated Dynamo Router makes worker-selection decisions. No external gateway is required. | Local development, single-cluster deployments, and environments where Dynamo should own the request entry point end to end. |
| Gateway API routing with GAIE | A Kubernetes Gateway API Inference Extension gateway calls the Dynamo Endpoint Picker Plugin (EPP) before forwarding to the selected worker's Frontend sidecar in --router-mode direct. | Kubernetes platforms that standardize on Gateway API, or deployments where gateway-level policy, auth, rate limiting, and observability should sit at the cluster edge. |
Request flow for the Dynamo-native path is client → Frontend → Router → workers. Request flow for the Gateway API path is client → Gateway → EPP → Frontend sidecar (direct) → workers.
See the Gateway API Inference Extension (GAIE) guide for the Gateway API setup, supported features, and configuration.
# Pull a prebuilt container (SGLang example)
docker run --gpus all --network host --rm -it nvcr.io/nvidia/ai-dynamo/sglang-runtime:1.2.1
# Inside the container — start frontend and worker
python3 -m dynamo.frontend --http-port 8000 --discovery-backend file > /dev/null 2>&1 &
python3 -m dynamo.sglang --model-path Qwen/Qwen3-0.6B --discovery-backend file &
# Send a request
curl -s localhost:8000/v1/chat/completions -H "Content-Type: application/json" -d '{
"model": "Qwen/Qwen3-0.6B",
"messages": [{"role": "user", "content": "Hello!"}],
"max_tokens": 100
}' | jqAlso available: tensorrtllm-runtime:1.2.1 and vllm-runtime:1.2.1.
Install uv (curl -LsSf https://astral.sh/uv/install.sh | sh), then:
uv pip install --prerelease=allow "ai-dynamo[sglang]" # or [vllm]Note: TensorRT-LLM requires pip with --extra-index-url https://pypi.nvidia.com. See the install guide for TRT-LLM-specific instructions.
Then start the frontend and a worker as shown above. See the full installation guide for system dependencies and backend-specific notes.
For production multi-node clusters, install the Dynamo Platform and deploy with a single manifest:
# Zero-config deploy: specify model + SLA, Dynamo handles the rest
apiVersion: nvidia.com/v1beta1
kind: DynamoGraphDeploymentRequest
metadata:
name: my-model
spec:
model: Qwen/Qwen3-0.6B
backend: vllm
sla:
ttft: 200.0 # ms
itl: 20.0 # ms
autoApply: truePre-built recipes for common models:
| Model | Framework | Mode | Recipe |
|---|---|---|---|
| Llama-3-70B | vLLM | Aggregated | View |
| DeepSeek-R1 | SGLang | Disaggregated | View |
| Qwen3-32B-FP8 | TensorRT-LLM | Aggregated | View |
See recipes/ for the full list. Cloud-specific guides: AWS EKS · Google GKE · Azure AKS · Amazon ECS
For contributors who want to build and develop locally. See the full build guide for details.
# Install system deps (Ubuntu 24.04)
sudo apt install -y build-essential libhwloc-dev libudev-dev pkg-config libclang-dev protobuf-compiler python3-dev cmake
# Install Rust
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh && source $HOME/.cargo/env
# Create venv and build
uv venv dynamo && source dynamo/bin/activate
uv pip install pip 'maturin[patchelf]'
cd lib/bindings/python && maturin develop --uv && cd $PROJECT_ROOT
uv pip install -e lib/gpu_memory_service
uv pip install -e .VSCode/Cursor users: see the .devcontainer for a pre-configured dev environment.
Dynamo is built in the open with an OSS-first development model. We welcome contributions of all kinds.
Dynamo provides comprehensive benchmarking tools:
The OpenAI-compatible frontend exposes an OpenAPI 3 spec at /openapi.json. To generate without running the server:
cargo run -p dynamo-llm --bin generate-frontend-openapiThis writes to docs/reference/api/openapi.json.
Dynamo uses TCP for inter-component communication. On Kubernetes, native resources (CRDs + EndpointSlices) handle service discovery. External services are optional for most deployments:
| Deployment | etcd | NATS | Notes |
|---|---|---|---|
| Local Development | ❌ Not required | ❌ Not required | Pass --discovery-backend file; vLLM also needs --kv-events-config '{"enable_kv_cache_events": false}' |
| Kubernetes | ❌ Not required | ❌ Not required | K8s-native discovery; TCP request plane |
Note: KV-aware routing does not require NATS. Enable KV events when you need event-backed cache-state tracking, or use --no-router-kv-events for prediction-based routing without external event infrastructure.
For Slurm or other distributed deployments that choose etcd or NATS JetStream-backed modes:
To quickly setup both: docker compose -f dev/docker-compose.yml up -d
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