stable-diffusion 3 体验部署流程（ComfyUI)

环境准备

下载及简介

git clone https://huggingface.co/stabilityai/stable-diffusion-3-medium
SD3 checkpoints：

sd3_medium_incl_clips.safetensors (5.5GB)
sd3_medium_incl_clips_t5xxlfp8.safetensors (10.1GB)
sd3_medium.safetensors (4.3GB)

前两个可以像 ComfyUI 中的任何常规checkpoints一样使用。这两个checkpoints之间的区别在于，第一个仅包含 2 个文本编码器：CLIP-L 和 CLIP-G，第二个包含 3 个：CLIP-L、CLIP-G 和 T5XXL。第三个模型不包含文本编码器，必须单独加载它们才能使用该文件。

模型保存

把如下三个模型放在 ComfyUI/models/checkpoints/ 目录中（可以选择其中一个模型体验）

sd3_medium_incl_clips.safetensors
sd3_medium_incl_clips_t5xxlfp8.safetensors
sd3_medium.safetensors

文本编码器保存

从text_encoders目录下载文本编码器，选择其中的一个文件保存到ComfyUI/models/clip/目录中：

clip_g.safetensors
clip_l.safetensors
t5xxl_fp8_e4m3fn.safetensors
t5xxl_fp16.safetensors

ComfyUI 测试体验

打开comfyui 界面导入脚本并执行：

{"last_node_id": 272,"last_link_id": 599,"nodes": [{"id": 11,"type": "TripleCLIPLoader","pos": [-1885,-49],"size": {"0": 315,"1": 106},"flags": {},"order": 0,"mode": 0,"outputs": [{"name": "CLIP","type": "CLIP","links": [5,94],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "TripleCLIPLoader"},"widgets_values": ["clip_g.safetensors","clip_l.safetensors","t5xxl_fp8_e4m3fn.safetensors"]},{"id": 71,"type": "CLIPTextEncode","pos": [-1869.2871546875003,560.071803930664],"size": {"0": 380.4615783691406,"1": 102.07693481445312},"flags": {},"order": 6,"mode": 0,"inputs": [{"name": "clip","type": "CLIP","link": 94}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [93,580],"shape": 3,"slot_index": 0}],"title": "CLIP Text Encode (Negative Prompt)","properties": {"Node name for S&R": "CLIPTextEncode"},"widgets_values": ["bad quality, poor quality, doll, disfigured, jpg, toy, bad anatomy, missing limbs, missing fingers, 3d, cgi"],"color": "#322","bgcolor": "#533"},{"id": 68,"type": "ConditioningSetTimestepRange","pos": [-1010,167],"size": {"0": 317.4000244140625,"1": 82},"flags": {},"order": 10,"mode": 0,"inputs": [{"name": "conditioning","type": "CONDITIONING","link": 90}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [91],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "ConditioningSetTimestepRange"},"widgets_values": [0.1,1]},{"id": 70,"type": "ConditioningSetTimestepRange","pos": [-1006,314],"size": {"0": 317.4000244140625,"1": 82},"flags": {},"order": 8,"mode": 0,"inputs": [{"name": "conditioning","type": "CONDITIONING","link": 93,"slot_index": 0}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [92],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "ConditioningSetTimestepRange"},"widgets_values": [0,0.1]},{"id": 67,"type": "ConditioningZeroOut","pos": [-1370,337],"size": {"0": 211.60000610351562,"1": 26},"flags": {},"order": 9,"mode": 0,"inputs": [{"name": "conditioning","type": "CONDITIONING","link": 580}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [90],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "ConditioningZeroOut"}},{"id": 266,"type": "Note","pos": [-2352,576],"size": {"0": 308.061279296875,"1": 102.86902618408203},"flags": {},"order": 1,"mode": 0,"properties": {"text": ""},"widgets_values": ["Resolution should be around 1 megapixel and width/height must be multiple of 64"],"color": "#432","bgcolor": "#653"},{"id": 13,"type": "ModelSamplingSD3","pos": [-974,-220],"size": {"0": 315,"1": 58},"flags": {"collapsed": false},"order": 7,"mode": 0,"inputs": [{"name": "model","type": "MODEL","link": 565}],"outputs": [{"name": "MODEL","type": "MODEL","links": [591],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "ModelSamplingSD3"},"widgets_values": [3]},{"id": 69,"type": "ConditioningCombine","pos": [-662,165],"size": {"0": 228.39999389648438,"1": 46},"flags": {},"order": 11,"mode": 0,"inputs": [{"name": "conditioning_1","type": "CONDITIONING","link": 91},{"name": "conditioning_2","type": "CONDITIONING","link": 92}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [592],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "ConditioningCombine"}},{"id": 233,"type": "PreviewImage","pos": [535.1143750722272,-147.92548481673106],"size": {"0": 604.7489624023438,"1": 592.15576171875},"flags": {},"order": 14,"mode": 0,"inputs": [{"name": "images","type": "IMAGE","link": 599}],"properties": {"Node name for S&R": "PreviewImage"}},{"id": 231,"type": "VAEDecode","pos": [141,-177],"size": {"0": 210,"1": 46},"flags": {},"order": 13,"mode": 0,"inputs": [{"name": "samples","type": "LATENT","link": 596},{"name": "vae","type": "VAE","link": 557}],"outputs": [{"name": "IMAGE","type": "IMAGE","links": [599],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "VAEDecode"}},{"id": 252,"type": "CheckpointLoaderSimple","pos": [-2314,-203],"size": {"0": 746.7357788085938,"1": 98},"flags": {},"order": 2,"mode": 0,"outputs": [{"name": "MODEL","type": "MODEL","links": [565],"shape": 3,"slot_index": 0},{"name": "CLIP","type": "CLIP","links": [],"shape": 3,"slot_index": 1},{"name": "VAE","type": "VAE","links": [557],"shape": 3,"slot_index": 2}],"properties": {"Node name for S&R": "CheckpointLoaderSimple"},"widgets_values": ["sdv3/2b_1024/sd3_medium.safetensors"]},{"id": 271,"type": "KSampler","pos": [-269,-179],"size": {"0": 315,"1": 446},"flags": {},"order": 12,"mode": 0,"inputs": [{"name": "model","type": "MODEL","link": 591},{"name": "positive","type": "CONDITIONING","link": 595},{"name": "negative","type": "CONDITIONING","link": 592},{"name": "latent_image","type": "LATENT","link": 593},{"name": "seed","type": "INT","link": 597,"widget": {"name": "seed"},"slot_index": 4}],"outputs": [{"name": "LATENT","type": "LATENT","links": [596],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "KSampler"},"widgets_values": [945512652412924,"fixed",28,4.5,"dpmpp_2m","sgm_uniform",1]},{"id": 135,"type": "EmptySD3LatentImage","pos": [-2352,438],"size": {"0": 315,"1": 106},"flags": {},"order": 3,"mode": 0,"inputs": [],"outputs": [{"name": "LATENT","type": "LATENT","links": [593],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "EmptySD3LatentImage"},"widgets_values": [1024,1024,1]},{"id": 6,"type": "CLIPTextEncode","pos": [-1876.2871546875003,284.0718039306641],"size": {"0": 389.06927490234375,"1": 207.84902954101562},"flags": {},"order": 5,"mode": 0,"inputs": [{"name": "clip","type": "CLIP","link": 5}],"outputs": [{"name": "CONDITIONING","type": "CONDITIONING","links": [595],"shape": 3,"slot_index": 0}],"properties": {"Node name for S&R": "CLIPTextEncode"},"widgets_values": ["a female character with long, flowing hair that appears to be made of ethereal, swirling patterns resembling the Northern Lights or Aurora Borealis. 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}

测试结果展示

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