Dynamo NIXL Connect specializes in moving data between models/workers in a Dynamo Graph, and for the use cases where registration and memory regions need to be dynamic.
Dynamo connect provides utilities for such use cases, using the NIXL-based I/O subsystem via a set of Python classes.
The relaxed registration comes with some performance overheads, but simplifies the integration process.
A Pydantic type intended to provide JSON serialized NIXL metadata about a [`ReadableOperation`](readable-operation.md) or [`WritableOperation`](writable-operation.md) object.
NIXL metadata contains detailed information about a worker process and how to access memory regions registered with the corresponding agent.
This data is required to perform data transfers using the NIXL-based I/O subsystem.
An operation which enables a remote worker to read data from the local worker.
To create the operation, a set of local [`Descriptor`](descriptor.md) objects must be provided that reference memory intended to be transferred to a remote worker.
An operation which enables a remote worker to write data to the local worker.
To create the operation, a set of local [`Descriptor`](descriptor.md) objects must be provided which reference memory intended to receive data from a remote worker.
Dynamo SGLang supports three types of diffusion-based generation: **LLM diffusion** (text generation via iterative refinement), **image diffusion** (text-to-image), and **video generation** (text-to-video). Each uses a different worker flag and handler, but all integrate with SGLang's `DiffGenerator`.
For quick start instructions, see the [SGLang README](README.md). This document provides all deployment patterns for running SGLang with Dynamo, including LLMs, multimodal, and diffusion models, and Kubernetes deployment.
subtitle:Architecture, configuration, and operational details for the SGLang backend
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# Reference Guide
## Overview
The SGLang backend in Dynamo uses a modular architecture where `main.py` dispatches to specialized initialization modules based on the worker type. Each worker type has its own init module, request handler, health check, and registration logic.
This directory contains examples and reference implementations for deploying Large Language Models (LLMs) in various configurations using TensorRT-LLM.
This guide demonstrates how to deploy google/gemma-3-1b-it with Variable Sliding Window Attention (VSWA) using Dynamo. Since google/gemma-3-1b-it is a small model, each aggregated, decode, or prefill worker only requires one H100 GPU or one GB200 GPU.
VSWA is a mechanism in which a model’s layers alternate between multiple sliding window sizes. An example of this is Gemma 3, which incorporates both global attention layers and sliding window layers.
# Running gpt-oss-120b Disaggregated with TensorRT-LLM
Dynamo supports disaggregated serving of gpt-oss-120b with TensorRT-LLM. This guide demonstrates how to deploy gpt-oss-120b using disaggregated prefill/decode serving on a single B200 node with 8 GPUs, running 1 prefill worker on 4 GPUs and 1 decode worker on 4 GPUs.
Dan Gil <dagil@nvidia.com>