KJNodes/wangenerated
WanVideo Mem Eff Sage Attention Patch(WanVideoMemoryEfficientSageAttentionPatch)
EXPERIMENTAL! Activates custom sageattention on the WanVideo self-attention to reduce peak VRAM usage, overrides the attention mode. Requires latest sageattention version.
Wan Video Memory Efficient Sage Attention Patch
model
model
KJNodes
Description
An experimental node that patches the WanVideo self-attention mechanism to use a custom sageattention implementation, reducing peak VRAM usage during inference. This node overrides the attention mode of the model.
Requires the latest version of sageattention – ensure it is installed, compatible, and up to date before using this node.
Inputs
| Name | Type | Description |
|---|---|---|
model | MODEL | The WanVideo model to which the memory‑efficient sageattention patch is applied. |
Outputs
| Type | Description |
|---|---|
MODEL | The same model instance with its self‑attention mechanism patched to use sageattention. |
Usage Notes
- This node is experimental – behaviour may change in future releases.
- It only affects the self‑attention layers of WanVideo; cross‑attention or other components remain unchanged.
- Patching is applied as a model wrapper; the output
MODELcan be used directly in subsequent sampling nodes. - If
sageattentionis not installed or is outdated, an error will be raised at runtime. - Running this patch may alter output quality or behaviour – test carefully with your specific workflow.
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