Documentation Index
Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
Use this file to discover all available pages before exploring further.
This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub
Overview
The SelectModelDevice node allows you to manually choose which device (CPU or a specific GPU) a diffusion model runs on. It can move a model to a different device, and it handles conflicts with other multi-GPU nodes automatically.Inputs
| Parameter | Data Type | Required | Range | Description |
|---|---|---|---|---|
model | MODEL | Yes | The diffusion model to place on a specific device. | |
device | COMBO | Yes | "default""cpu""gpu:0""gpu:1""gpu:2""gpu:3""gpu:4""gpu:5""gpu:6""gpu:7" | The target device for the model. Options are dynamically generated based on available GPUs. (default: “default”) |
"default": Restores the device assigned by the model loader, even if a previous SelectModelDevice node changed it."cpu": Pins both the load and offload device to the CPU."gpu:N": Pins the load device to the Nth available GPU (e.g.,"gpu:0"for the first GPU). The offload device is restored to the loader’s original choice.
- If the requested device does not exist on the current machine (e.g., a workflow created on a 2-GPU machine is opened on a 1-GPU machine), the node will pass the model through unchanged and log a message instead of failing.
- If the model is already on the requested device, the node takes a fast path and does not reload the model.
- Placing this node after a node that has already consumed the model (e.g., a KSampler) is not recommended, as any state changed by the prior node will be observed if the device matches the original.
Outputs
| Output Name | Data Type | Description |
|---|---|---|
model | MODEL | The diffusion model, now placed on the selected device. If the device was invalid or unavailable, the model is passed through unchanged. |
Source fingerprint (SHA-256):
02841975f123cc8ae8152ea86f1798e0e7e68255ecd11e04271da886b75eb0fd