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Nexus

Docker Image

Nexus is a scalable and efficient serving system for DNN applications on GPU cluster.

SOSP 2019 Paper

  • Check out our SOSP 2019 paper here.
  • Check out the Google Drive that contains a sample of video dataset.

Building Nexus

See BUILDING.md for details.

Docker and Examples

We provide a Docker image so that you can try Nexus quickly. And there is an example that goes step by step on how to run Nexus with a simple example application. We recommend you to take a look here.

Deployment

Download Model Zoo

Nexus publishes public model zoo on our department-hosted GitLab. To download, you need to install Git LFS first. Then, run:

git clone https://gitlab.cs.washington.edu/syslab/nexus-models
cd nexus-models
git lfs checkout

Run the Profiler

Nexus is a profile-based system. So before running Nexus, make sure you have profiled all the GPUs. To profile a certain model on a certain GPU, run:

nexus/tools/profiler/profiler.py --gpu_list=GPU_INDEX --gpu_uuid \
    --framework=tensorflow --model=MODEL_NAME \
    --model_root=nexus-models/ --dataset=/path/to/datasets/

The profile will be saved to the --model_root directory. See examples for more concrete usage.

Run Nexus

To run Nexus, you need to run the scheduler first, then spawn a backend for each GPU card, and finally run the Nexus frontend of your application. See examples for more concrete usage.