[diffusion] feat: support loading comfy nvfp4 minimax h3 checkpoints (#36044)

2026-08-24 22:57:02 +08:00
parent 76d1401881
commit 9b0007ed19
9 changed files with 123 additions and 6 deletions
@@ -314,6 +314,12 @@ honors each layer's activation mode; omit `--quantization`.
 Mixed exports use the same command: SGLang dispatches each marked layer to its
 serialized W4A4 or INT8 ConvRot kernel instead of applying one global method.

+Comfy NVFP4 DiTs reuse SGLang's ModelOpt NVFP4 backend, which requires CUDA
+compute capability 10.0 or newer. Pass a pruned FL2VA / Ref2VA file such as
+`Abiray/Minimax-H3-nvfp4-INT4-INT8-Convrot/MiniMax_H3_FL2VA_pruned_nvfp4.safetensors`
+to `--transformer-weights-path` and omit `--quantization`. SGLang infers the
+packed group size and Comfy scale layout from the checkpoint; FSDP is rejected.
+
 ### Advanced: precomputed AdaLN cache

 The [model card](https://huggingface.co/MiniMaxAI/MiniMax-H3) notes that about