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WanVideoSamplerMultiGPU.md

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WanVideoSamplerMultiGPU

WanVideoSamplerMultiGPU runs WanVideo diffusion sampling while respecting your chosen compute and offload devices. The node patches WanVideo's internal device tracking so samplers, transformer blocks, and optional block swap features all target the MultiGPU placements you configure.

Inputs

Required

Parameter Data Type Description
model WANVIDEOMODEL Wan diffusion model output by WanVideoModelLoaderMultiGPU.
compute_device MULTIGPUDEVICE Device identifier to run the sampler on.
image_embeds WANVIDIMAGE_EMBEDS Latent/video conditioning produced by Wan preprocessing nodes.
steps INT Number of denoising steps to execute.
cfg FLOAT Classifier-free guidance strength.
shift FLOAT Scheduler-specific shift parameter.
seed INT Random seed for reproducibility (0 uses the provided value).
force_offload BOOLEAN When true, move the model back to the offload device after sampling.
scheduler STRING Sampler scheduler to use (unipc, dpm++, euler, etc.).
riflex_freq_index INT Enables RIFLEX continuation frames when > 0.

Optional

Parameter Data Type Description
text_embeds WANVIDEOTEXTEMBEDS Conditioning from Wan text encoders.
samples LATENT Initial latents for video-to-video workflows.
denoise_strength FLOAT Fraction of steps to apply when reusing latents.
feta_args FETAARGS Wan FETA extension controls.
context_options WANVIDCONTEXT Context window adjustments.
cache_args CACHEARGS Cache behaviour for incremental runs.
flowedit_args FLOWEDITARGS FlowEdit animation refinements.
batched_cfg BOOLEAN Batch cond/uncond passes to trade VRAM for speed.
slg_args SLGARGS Sparse latent guidance options.
rope_function STRING Rotary embedding mode (default, comfy, comfy_chunked).
loop_args LOOPARGS Looping schedule configuration.
experimental_args EXPERIMENTALARGS Wan experimental toggles.
sigmas SIGMAS Custom sigma schedule.
unianimate_poses UNIANIMATE_POSE Pose conditioning inputs.
fantasytalking_embeds FANTASYTALKING_EMBEDS Speech animation embeds.
uni3c_embeds UNI3C_EMBEDS Multi-character conditioning embeds.
multitalk_embeds MULTITALK_EMBEDS MultiTalk conditioning embeds.
freeinit_args FREEINITARGS FreeInit configuration.
start_step INT Start step for partial denoising.
end_step INT End step for partial denoising (-1 uses full schedule).
add_noise_to_samples BOOLEAN Adds fresh noise to latents before diffusion.

Outputs

Output Name Data Type Description
samples LATENT Final latent video tensor after sampling.
denoised_samples LATENT Optional mid-run denoised latents for reuse or decoding.