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Multi-node and Load Balancing

πŸ’°SUBSCRIPTION

This feature is available in the Team and Enterprise Plans.

Tabby provides built-in distributed support for multi-node setups. This allows you to scale your Tabby deployment horizontally and distribute the workload across multiple GPU workers.

Start the Webserver​

Start the web server using the following command:

tabby serve --webserver

By doing so, the web server will operate without a model attached to it. If you send a POST request to /v1/completions, you will receive a 501 Not Implemented error.

Check the Cluster Information​

In the Cluster Information tab of the admin panel, you can see that there are no workers connected to the Tabby instance, except for the local code index.

Cluster Information

You'll also notice the Registration Token displayed on this page. This token is used to authenticate the worker nodes with the Tabby instance and will be referred to as TABBY_REGISTRATION_TOKEN in the following sections.

Register a Completion Worker​

To register a worker, you need to run the following command:

# In this tutorial, we'll start the worker on the same machine as the web server.
export TABBY_WEBSERVER_URL=127.0.0.1:8080
export TABBY_REGISTRATION_TOKEN=<token from the admin panel>

tabby worker::completion \
--model StarCoder-1B \
--url $TABBY_WEBSERVER_URL \
--token $TABBY_REGISTRATION_TOKEN \
--port 8081

After this command executes successfully, you should see the new worker in the Cluster Information tab. More workers can be added by running the same command on different machines to improve the concurrency of the system. Tabby will distribute the workload across all the workers.

(Optional) Register a Chat Worker​

Similarly, you can register a chat worker by running the following command to enable the chat playground.

tabby worker::chat \
--model Mistral-7B \
--url $TABBY_WEBSERVER_URL \
--token $TABBY_REGISTRATION_TOKEN \
--port 8082

Once it's registered, you should see the Chat Playground entry under the avatar menu.