accelerate

diffsynth/pipelines/wan_video_new.py

@@ -212,6 +212,7 @@ class WanVideoPipeline(BasePipeline):
             WanVideoUnit_FunReference(),
             WanVideoUnit_SpeedControl(),
             WanVideoUnit_VACE(),
+            WanVideoUnit_UnifiedSequenceParallel(),
             WanVideoUnit_TeaCache(),
             WanVideoUnit_CfgMerger(),
         ]
@@ -375,6 +376,19 @@ class WanVideoPipeline(BasePipeline):
             )
             
             
+    def initialize_usp(self):
+        import torch.distributed as dist
+        from xfuser.core.distributed import initialize_model_parallel, init_distributed_environment
+        dist.init_process_group(backend="nccl", init_method="env://")
+        init_distributed_environment(rank=dist.get_rank(), world_size=dist.get_world_size())
+        initialize_model_parallel(
+            sequence_parallel_degree=dist.get_world_size(),
+            ring_degree=1,
+            ulysses_degree=dist.get_world_size(),
+        )
+        torch.cuda.set_device(dist.get_rank())
+            
+            
     def enable_usp(self):
         from xfuser.core.distributed import get_sequence_parallel_world_size
         from ..distributed.xdit_context_parallel import usp_attn_forward, usp_dit_forward
@@ -423,6 +437,7 @@ class WanVideoPipeline(BasePipeline):
         
         # Initialize pipeline
         pipe = WanVideoPipeline(device=device, torch_dtype=torch_dtype)
+        if use_usp: pipe.initialize_usp()
         pipe.text_encoder = model_manager.fetch_model("wan_video_text_encoder")
         pipe.dit = model_manager.fetch_model("wan_video_dit")
         pipe.vae = model_manager.fetch_model("wan_video_vae")
@@ -434,6 +449,9 @@ class WanVideoPipeline(BasePipeline):
         tokenizer_config.download_if_necessary(local_model_path, skip_download=skip_download)
         pipe.prompter.fetch_models(pipe.text_encoder)
         pipe.prompter.fetch_tokenizer(tokenizer_config.path)
+        
+        # Unified Sequence Parallel
+        if use_usp: pipe.enable_usp()
         return pipe
 
 
@@ -492,11 +510,11 @@ class WanVideoPipeline(BasePipeline):
         # Inputs
         inputs_posi = {
             "prompt": prompt,
-            "tea_cache_l1_thresh": tea_cache_l1_thresh, "tea_cache_model_id": tea_cache_model_id,
+            "tea_cache_l1_thresh": tea_cache_l1_thresh, "tea_cache_model_id": tea_cache_model_id, "num_inference_steps": num_inference_steps,
         }
         inputs_nega = {
             "negative_prompt": negative_prompt,
-            "tea_cache_l1_thresh": tea_cache_l1_thresh, "tea_cache_model_id": tea_cache_model_id,
+            "tea_cache_l1_thresh": tea_cache_l1_thresh, "tea_cache_model_id": tea_cache_model_id, "num_inference_steps": num_inference_steps,
         }
         inputs_shared = {
             "input_image": input_image,
@@ -507,7 +525,7 @@ class WanVideoPipeline(BasePipeline):
             "seed": seed, "rand_device": rand_device,
             "height": height, "width": width, "num_frames": num_frames,
             "cfg_scale": cfg_scale, "cfg_merge": cfg_merge,
-            "num_inference_steps": num_inference_steps, "sigma_shift": sigma_shift,
+            "sigma_shift": sigma_shift,
             "motion_bucket_id": motion_bucket_id,
             "tiled": tiled, "tile_size": tile_size, "tile_stride": tile_stride,
             "sliding_window_size": sliding_window_size, "sliding_window_stride": sliding_window_stride,
@@ -811,6 +829,18 @@ class WanVideoUnit_VACE(PipelineUnit):
 
 
 
+class WanVideoUnit_UnifiedSequenceParallel(PipelineUnit):
+    def __init__(self):
+        super().__init__(input_params=())
+
+    def process(self, pipe: WanVideoPipeline):
+        if hasattr(pipe, "use_unified_sequence_parallel"):
+            if pipe.use_unified_sequence_parallel:
+                return {"use_unified_sequence_parallel": True}
+        return {}
+
+
+
 class WanVideoUnit_TeaCache(PipelineUnit):
     def __init__(self):
         super().__init__(

examples/wanvideo/README_zh.md

@@ -78,6 +78,7 @@ ModelConfig(path=[
 * `local_model_path`: 用于保存下载模型的路径，默认值为 `"./models"`。
 * `skip_download`: 是否跳过下载，默认值为 `False`。当您的网络无法访问[魔搭社区](https://modelscope.cn/)时，请手动下载必要的文件，并将其设置为 `True`。
 * `redirect_common_files`: 是否重定向重复模型文件，默认值为 `True`。由于 Wan 系列模型包括多个基础模型，每个基础模型的 text encoder 等模块都是相同的，为避免重复下载，我们会对模型路径进行重定向。
+* `use_usp`: 是否启用 Unified Sequence Parallel，默认值为 `False`。用于多 GPU 并行推理。
 
 </details>
 
@@ -142,6 +143,23 @@ FP8 量化能够大幅度减少显存占用，但不会加速，部分模型在
 </details>
 
 
+<details>
+
+<summary>推理加速</summary>
+
+Wan 支持多种加速方案，包括
+
+* 高效注意力机制实现：当您的 Python 环境中安装过这些注意力机制实现方案时，我们将会按照以下优先级自动启用。
+    * [Flash Attention 3](https://github.com/Dao-AILab/flash-attention)
+    * [Flash Attention 2](https://github.com/Dao-AILab/flash-attention)
+    * [Sage Attention](https://github.com/thu-ml/SageAttention)
+    * [torch SDPA](https://pytorch.org/docs/stable/generated/torch.nn.functional.scaled_dot_product_attention.html) (默认设置，建议安装 `torch>=2.5.0`)
+* 统一序列并行：基于 [xDiT](https://github.com/xdit-project/xDiT) 实现的序列并行，请参考[示例代码](./acceleration/unified_sequence_parallel.py)。
+* TeaCache：加速技术 [TeaCache](https://github.com/ali-vilab/TeaCache)，请参考[示例代码](./acceleration/teacache.py)。
+
+</details>
+
+
 <details>
 
 <summary>输入参数</summary>

examples/wanvideo/acceleration/teacache.py

@@ -1,34 +1,27 @@
 import torch
-from diffsynth import ModelManager, WanVideoPipeline, save_video, VideoData
-from modelscope import snapshot_download
+from PIL import Image
+from diffsynth import save_video, VideoData
+from diffsynth.pipelines.wan_video_new import WanVideoPipeline, ModelConfig
 
 
-# Download models
-snapshot_download("Wan-AI/Wan2.1-T2V-1.3B", local_dir="models/Wan-AI/Wan2.1-T2V-1.3B")
-
-# Load models
-model_manager = ModelManager(device="cpu")
-model_manager.load_models(
-    [
-        "models/Wan-AI/Wan2.1-T2V-1.3B/diffusion_pytorch_model.safetensors",
-        "models/Wan-AI/Wan2.1-T2V-1.3B/models_t5_umt5-xxl-enc-bf16.pth",
-        "models/Wan-AI/Wan2.1-T2V-1.3B/Wan2.1_VAE.pth",
+pipe = WanVideoPipeline.from_pretrained(
+    torch_dtype=torch.bfloat16,
+    device="cuda",
+    model_configs=[
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="diffusion_pytorch_model*.safetensors", offload_device="cpu"),
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="models_t5_umt5-xxl-enc-bf16.pth", offload_device="cpu"),
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="Wan2.1_VAE.pth", offload_device="cpu"),
     ],
-    torch_dtype=torch.bfloat16, # You can set `torch_dtype=torch.float8_e4m3fn` to enable FP8 quantization.
 )
-pipe = WanVideoPipeline.from_model_manager(model_manager, torch_dtype=torch.bfloat16, device="cuda")
-pipe.enable_vram_management(num_persistent_param_in_dit=None)
+pipe.enable_vram_management()
+
 
-# Text-to-video
 video = pipe(
     prompt="纪实摄影风格画面，一只活泼的小狗在绿茵茵的草地上迅速奔跑。小狗毛色棕黄，两只耳朵立起，神情专注而欢快。阳光洒在它身上，使得毛发看上去格外柔软而闪亮。背景是一片开阔的草地，偶尔点缀着几朵野花，远处隐约可见蓝天和几片白云。透视感鲜明，捕捉小狗奔跑时的动感和四周草地的生机。中景侧面移动视角。",
     negative_prompt="色调艳丽，过曝，静态，细节模糊不清，字幕，风格，作品，画作，画面，静止，整体发灰，最差质量，低质量，JPEG压缩残留，丑陋的，残缺的，多余的手指，画得不好的手部，画得不好的脸部，畸形的，毁容的，形态畸形的肢体，手指融合，静止不动的画面，杂乱的背景，三条腿，背景人很多，倒着走",
-    num_inference_steps=50,
     seed=0, tiled=True,
     # TeaCache parameters
     tea_cache_l1_thresh=0.05, # The larger this value is, the faster the speed, but the worse the visual quality.
     tea_cache_model_id="Wan2.1-T2V-1.3B", # Choose one in (Wan2.1-T2V-1.3B, Wan2.1-T2V-14B, Wan2.1-I2V-14B-480P, Wan2.1-I2V-14B-720P).
 )
 save_video(video, "video1.mp4", fps=15, quality=5)
-
-# TeaCache doesn't support video-to-video

examples/wanvideo/acceleration/unified_sequence_parallel.py

@@ -0,0 +1,27 @@
+import torch
+from PIL import Image
+from diffsynth import save_video, VideoData
+from diffsynth.pipelines.wan_video_new import WanVideoPipeline, ModelConfig
+import torch.distributed as dist
+
+
+pipe = WanVideoPipeline.from_pretrained(
+    torch_dtype=torch.bfloat16,
+    device="cuda",
+    use_usp=True,
+    model_configs=[
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-14B", origin_file_pattern="diffusion_pytorch_model*.safetensors", offload_device="cpu"),
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-14B", origin_file_pattern="models_t5_umt5-xxl-enc-bf16.pth", offload_device="cpu"),
+        ModelConfig(model_id="Wan-AI/Wan2.1-T2V-14B", origin_file_pattern="Wan2.1_VAE.pth", offload_device="cpu"),
+    ],
+)
+pipe.enable_vram_management()
+
+
+video = pipe(
+    prompt="一名宇航员身穿太空服，面朝镜头骑着一匹机械马在火星表面驰骋。红色的荒凉地表延伸至远方，点缀着巨大的陨石坑和奇特的岩石结构。机械马的步伐稳健，扬起微弱的尘埃，展现出未来科技与原始探索的完美结合。宇航员手持操控装置，目光坚定，仿佛正在开辟人类的新疆域。背景是深邃的宇宙和蔚蓝的地球，画面既科幻又充满希望，让人不禁畅想未来的星际生活。",
+    negative_prompt="色调艳丽，过曝，静态，细节模糊不清，字幕，风格，作品，画作，画面，静止，整体发灰，最差质量，低质量，JPEG压缩残留，丑陋的，残缺的，多余的手指，画得不好的手部，画得不好的脸部，畸形的，毁容的，形态畸形的肢体，手指融合，静止不动的画面，杂乱的背景，三条腿，背景人很多，倒着走",
+    seed=0, tiled=True,
+)
+if dist.get_rank() == 0:
+    save_video(video, "video1.mp4", fps=15, quality=5)

examples/wanvideo/wan_14b_text_to_video_usp.py

@@ -1,58 +0,0 @@
-import torch
-from diffsynth import ModelManager, WanVideoPipeline, save_video, VideoData
-from modelscope import snapshot_download
-import torch.distributed as dist
-
-
-# Download models
-snapshot_download("Wan-AI/Wan2.1-T2V-14B", local_dir="models/Wan-AI/Wan2.1-T2V-14B")
-
-# Load models
-model_manager = ModelManager(device="cpu")
-model_manager.load_models(
-    [
-        [
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00001-of-00006.safetensors",
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00002-of-00006.safetensors",
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00003-of-00006.safetensors",
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00004-of-00006.safetensors",
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00005-of-00006.safetensors",
-            "models/Wan-AI/Wan2.1-T2V-14B/diffusion_pytorch_model-00006-of-00006.safetensors",
-        ],
-        "models/Wan-AI/Wan2.1-T2V-14B/models_t5_umt5-xxl-enc-bf16.pth",
-        "models/Wan-AI/Wan2.1-T2V-14B/Wan2.1_VAE.pth",
-    ],
-    torch_dtype=torch.float8_e4m3fn, # You can set `torch_dtype=torch.bfloat16` to disable FP8 quantization.
-)
-
-dist.init_process_group(
-    backend="nccl",
-    init_method="env://",
-)
-from xfuser.core.distributed import (initialize_model_parallel,
-                                     init_distributed_environment)
-init_distributed_environment(
-    rank=dist.get_rank(), world_size=dist.get_world_size())
-
-initialize_model_parallel(
-    sequence_parallel_degree=dist.get_world_size(),
-    ring_degree=1,
-    ulysses_degree=dist.get_world_size(),
-)
-torch.cuda.set_device(dist.get_rank())
-
-pipe = WanVideoPipeline.from_model_manager(model_manager, 
-                                           torch_dtype=torch.bfloat16, 
-                                           device=f"cuda:{dist.get_rank()}", 
-                                           use_usp=True if dist.get_world_size() > 1 else False)
-pipe.enable_vram_management(num_persistent_param_in_dit=None) # You can set `num_persistent_param_in_dit` to a small number to reduce VRAM required.
-
-# Text-to-video
-video = pipe(
-    prompt="一名宇航员身穿太空服，面朝镜头骑着一匹机械马在火星表面驰骋。红色的荒凉地表延伸至远方，点缀着巨大的陨石坑和奇特的岩石结构。机械马的步伐稳健，扬起微弱的尘埃，展现出未来科技与原始探索的完美结合。宇航员手持操控装置，目光坚定，仿佛正在开辟人类的新疆域。背景是深邃的宇宙和蔚蓝的地球，画面既科幻又充满希望，让人不禁畅想未来的星际生活。",
-    negative_prompt="色调艳丽，过曝，静态，细节模糊不清，字幕，风格，作品，画作，画面，静止，整体发灰，最差质量，低质量，JPEG压缩残留，丑陋的，残缺的，多余的手指，画得不好的手部，画得不好的脸部，畸形的，毁容的，形态畸形的肢体，手指融合，静止不动的画面，杂乱的背景，三条腿，背景人很多，倒着走",
-    num_inference_steps=50,
-    seed=0, tiled=True
-)
-if dist.get_rank() == 0:
-    save_video(video, "video1.mp4", fps=25, quality=5)