The NVIDIA-Fabric Manager service ensures that multiple GPUs that support NVSwitch (such as A100 and A800) are interconnected through NVSwitch. This guarantees normal network connectivity. If the NVIDIA-Fabric Manager service is not enabled on the node, the connection among multiple GPUs that support NVSwitch cannot be established.

Solution

In scenarios such as creating a node pool or adding new nodes, the NVIDIA-Fabric Manager package can be built into a custom image. In scenarios where nodes already exist, you can directly install NVIDIA-Fabric Manager to resolve this issue.

Solution 1 for scenarios where new nodes are added

Package a custom image. For packaging methods, see Overview of operating system (OS) images.

Select the packaged custom image to create a node pool or scale out nodes.

Solution 2 for scenarios where nodes already exist

Install and start the NVIDIA-Fabric Manager package that corresponds to the GPU driver version for the GPU node. For details, see Installing the NVIDIA-Fabric Manager package.

Last updated: 2026.07.23 14:31:45

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