Version

Qwen/Qwen2.5-7B

A 7B dense chat model (AWQ INT4) on a single NVIDIA A16 on Vultr.

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This document is for an unreleased version of Modelplane.

This document applies to the Modelplane main branch and not to the latest release v0.3.

A 7B dense chat model served from an AWQ INT4 quantization on a single NVIDIA A16 on Vultr: one Standalone engine, no cache, weights pulled straight from Hugging Face. The A16 slice on the vcg-a16-6c-64g-16vram plan carries 16 GiB of VRAM, so the INT4 weights (~5 GiB) fit with headroom for KV cache; --gpu-memory-utilization=0.85 and --enforce-eager keep the engine inside the small card.

This recipe was run end to end on Vultr (ewr); the InferenceClass, InferenceCluster, and ModelDeployment are the exact manifests from that run. GPU plans are region-gated on Vultr, so check the plan is offered in your region before applying. Apply the platform side first, then the ML side.

Validated deployments

Dense 7B 8,192 ctx vLLM

Cloud

AWS Google Cloud Azure Nebius

GPU

A16 16G L4 24G A100 40/80G H100 80G H200 141G 1× per node

Serving mode

Standalone LeaderWorker PrefillDecode

Precision

Engine

vLLM SGLang llama.cpp

Image

vllm/vllm-openai:v0.9.2

Manifests

docs/manifests/recipes/qwen2.5-7b

Platform

# InferenceClass for the A16 shape, validated serving Qwen2.5-7B on Vultr.
#
# One NVIDIA A16 on a Vultr vcg-a16-6c-64g-16vram plan: 16 GiB of VRAM is
# enough for a 7B AWQ INT4 model with KV cache headroom. GPU plans are
# region-gated on Vultr, so check the plan is offered in the cluster's region
# before applying.
apiVersion: modelplane.ai/v1alpha1
kind: InferenceClass
metadata:
  name: vultr-a16-1x
spec:
  description: "Vultr vcg-a16-6c-64g-16vram, 1x NVIDIA A16 16GB"
  provisioning:
    provider: Vultr
    vultr:
      plan: vcg-a16-6c-64g-16vram
      accelerator:
        type: nvidia-a16
        count: 1
  devices:
  - name: gpu
    claim: DRA
    driver: gpu.nvidia.com
    deviceClassName: gpu.nvidia.com
    count: 1
    attributes:
      architecture: { string: Ampere }
      cudaComputeCapability: { version: "8.6.0" }
    capacity:
      memory: { value: "16384Mi" }

# A Vultr Kubernetes Engine cluster in ewr (New Jersey) with a single A16 node
# offering the class above.
apiVersion: modelplane.ai/v1alpha1
kind: InferenceCluster
metadata:
  name: vultr-a16
  labels:
    modelplane.ai/region: ewr
spec:
  cluster:
    source: Vultr
    vultr:
      region: ewr
  nodePools:
  - name: gpu-a16
    className: vultr-a16-1x
    nodeCount: 1
    minNodeCount: 1
    maxNodeCount: 1

Deployment

# Qwen2.5-7B served on a single NVIDIA A16, validated end to end on Vultr.
#
# A 7B AWQ INT4 model is a single Standalone engine: one self-contained vLLM
# pod, no ModelCache, weights pulled straight from Hugging Face. The 16 GiB
# card is the constraint: --gpu-memory-utilization=0.85 leaves headroom for
# the card's overhead, and --enforce-eager skips CUDA graph capture to save
# memory at some latency cost. It carries no clusterSelector, so device
# capacity alone matches it to any compatible GPU in the fleet.
apiVersion: modelplane.ai/v1alpha1
kind: ModelDeployment
metadata:
  name: qwen-7b
  namespace: ml-team
spec:
  replicas: 1
  template:
    spec:
      engines:
      - name: qwen-7b
        members:
        - role: Standalone
          nodeSelector:
            devices:
            - name: gpu
              count: 1
              selectors:
              - cel: |
                  device.capacity["gpu.nvidia.com"].memory.compareTo(quantity("14Gi")) >= 0
          template:
            spec:
              containers:
              - name: engine
                image: vllm/vllm-openai:v0.9.2
                args:
                - --model=Qwen/Qwen2.5-7B-Instruct-AWQ
                - --served-model-name=qwen-7b
                - --max-model-len=8192
                - --gpu-memory-utilization=0.85
                - --enforce-eager

# One OpenAI-compatible endpoint for the deployment. Read its public address:
#   kubectl get ms qwen-7b -n ml-team -o jsonpath='{.status.address}'
apiVersion: modelplane.ai/v1alpha1
kind: ModelService
metadata:
  name: qwen-7b
  namespace: ml-team
spec:
  endpoints:
  - selector:
      matchLabels:
        modelplane.ai/deployment: qwen-7b