---
name: dgx-spark-connect-two-sparks
description: Connect two Spark devices and setup them up for inference and fine-tuning — on NVIDIA DGX Spark. Use when setting up connect-two-sparks on Spark hardware.
---

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# Connect Two Sparks

> Connect two Spark devices and setup them up for inference and fine-tuning

Configure two DGX Spark systems for high-speed inter-node communication using 200GbE direct
QSFP connections. This setup enables distributed workloads across multiple DGX Spark nodes
by establishing network connectivity and configuring SSH authentication.

**Outcome**: You will physically connect two DGX Spark devices with a QSFP cable, configure network
interfaces for cluster communication, and establish passwordless SSH between nodes to create
a functional distributed computing environment.

**Full playbook**: `/home/runner/work/dgx-spark-playbooks/dgx-spark-playbooks/nvidia/connect-two-sparks/README.md`
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