121 lines
2.8 KiB
Markdown
121 lines
2.8 KiB
Markdown
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# 06 ComfyUI 装出图
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## 目标
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装 ComfyUI + 拉 Flux.1-dev fp8 模型 + 出第一张图。
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## 拉 ComfyUI 代码
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**WSL2 终端**：
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```bash
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cd /mnt/d/img-code
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git clone https://github.com/comfyanonymous/ComfyUI.git
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cd ComfyUI
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```
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## 建独立 venv（和 LLM 那个分开）
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```bash
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uv venv --python 3.11 .venv
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source .venv/bin/activate
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```
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## 装依赖
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```bash
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uv pip install -r requirements.txt
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uv pip install torch torchvision torchaudio \
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--index-url https://download.pytorch.org/whl/cu128 \
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--extra-index-url https://pypi.tuna.tsinghua.edu.cn/simple
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```
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## 让 ComfyUI 用 D 盘模型
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**WSL2 终端**（在 ComfyUI 目录下）：
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```bash
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cat > extra_model_paths.yaml << 'EOF'
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comfyui_models:
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base_path: /mnt/d/ComfyUI-models
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checkpoints: checkpoints
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vae: vae
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loras: loras
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controlnet: controlnet
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EOF
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```
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**这样配置后**：
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- 你把模型放 `/mnt/d/ComfyUI-models/checkpoints/`
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- ComfyUI 自动找到（不用改代码）
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## 验证 PyTorch（同 05 章）
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```bash
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python -c "import torch; print(torch.cuda.is_available(), torch.cuda.get_device_name(0))"
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```
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## 拉 Flux.1-dev fp8 模型（16G 显存能跑）
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**WSL2 终端**：
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```bash
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source .venv/bin/activate
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uv pip install huggingface_hub
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python -c "
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from huggingface_hub import hf_hub_download
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import os
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os.makedirs('/mnt/d/ComfyUI-models/checkpoints', exist_ok=True)
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os.makedirs('/mnt/d/ComfyUI-models/vae', exist_ok=True)
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hf_hub_download(repo_id='Comfy-Org/Flux.1-FP8', filename='flux1-dev-fp8.safetensors', local_dir='/mnt/d/ComfyUI-models/checkpoints/')
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hf_hub_download(repo_id='Comfy-Org/Flux.1-FP8', filename='ae.safetensors', local_dir='/mnt/d/ComfyUI-models/vae/')
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print('下载完成')
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"
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```
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**等 10-20 分钟**（约 12 GB）。
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## 启动 ComfyUI
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```bash
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python main.py --listen 0.0.0.0
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```
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**看到**：
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```
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To see the GUI go to: http://0.0.0.0:8188
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```
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**Windows 浏览器打开**：http://localhost:8188
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## 出第一张图
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1. 浏览器打开 `http://localhost:8188`
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2. 左键双击空白处 → 搜 "Load Checkpoint" → 选 `flux1-dev-fp8.safetensors`
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3. 加 "CLIP Text Encode" 节点（输入正面提示词）
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4. 加 "Empty Latent Image" 节点（设置 1024x1024）
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5. 加 "KSampler" 节点
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6. 加 "VAE Decode" + "Save Image" 节点
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7. 点 "Queue Prompt" → 等 30-60 秒
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**第一次出图会编译 kernel，比较慢**（2-3 分钟），之后每张 5-10 秒。
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## 模型推荐
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| 模型 | 显存 | 速度 | 质量 |
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|------|------|------|------|
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| Flux.1-dev fp8 | 12G | 中 | ⭐⭐⭐⭐⭐ |
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| SDXL | 7G | 快 | ⭐⭐⭐⭐ |
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| SD 1.5 | 4G | 很快 | ⭐⭐⭐ |
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**16G 显存**：
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- Flux.1-dev fp8 刚好
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- SDXL 舒服
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- SD 1.5 跑得飞快
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## 关掉 ComfyUI
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回到 WSL2 终端，按 `Ctrl+C`。
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## 下一步
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✅ 通过后 → 装更多模型 / 装 ComfyUI-Manager（一键装插件）/ 学 workflow
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