Instructions to use tonera/Chroma1-HD-SVDQ with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Diffusers
How to use tonera/Chroma1-HD-SVDQ with Diffusers:
pip install -U diffusers transformers accelerate
import torch from diffusers import DiffusionPipeline # switch to "mps" for apple devices pipe = DiffusionPipeline.from_pretrained("tonera/Chroma1-HD-SVDQ", dtype=torch.bfloat16, device_map="cuda") prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k" image = pipe(prompt).images[0] - Notebooks
- Google Colab
- Kaggle
- Local Apps Settings
- Draw Things
- DiffusionBee
| pipeline_tag: text-to-image | |
| library_name: diffusers | |
| tags: | |
| - Chroma | |
| - quantization | |
| - svdquant | |
| - nunchaku | |
| - fp4 | |
| - int4 | |
| base_model: tonera/Chroma1-HD-SVDQ | |
| base_model_relation: quantized | |
| license: apache-2.0 | |
| # 模型说明(SVDQuant) | |
| > **文档语言**:中文|[English](README.md) | |
|  | |
| ## 模型名称 | |
| - **模型仓库**:`tonera/Chroma1-HD-SVDQ` | |
| - **Base(Diffusers 权重路径)**:`tonera/Chroma1-HD-SVDQ`(本仓库根目录) | |
| - **量化 Transformer 权重**:`tonera/Chroma1-HD-SVDQ/svdq-<precision>_r32-Chroma1-HD.safetensors` | |
| ## 量化 / 推理技术 | |
| - **推理引擎**:[vitoom-nunchaku](https://huggingface.co/tonera/vitoom-nunchaku) — 社区维护的 Nunchaku 扩展版,已内置 **Chroma** 支持 | |
| Nunchaku 是面向 **4-bit(FP4/INT4)低比特神经网络** 的高性能推理引擎,实现 **SVDQuant** 等后训练量化方案。本仓库 Chroma1-HD 量化权重需配合 **vitoom-nunchaku** 在支持的 GPU 上推理。 | |
| 上游 [Nunchaku](https://github.com/nunchaku-ai/nunchaku) 长期未合并 Chroma 相关改动([PR #928](https://github.com/nunchaku-ai/nunchaku/pull/928) 仍在等待)。**无需再手动复制 `transformer_chroma.py`。** | |
| ## 安装 vitoom-nunchaku(用法一:自建 Python 环境) | |
| 从 **[tonera/vitoom-nunchaku](https://huggingface.co/tonera/vitoom-nunchaku)** 安装与平台、Python、CUDA 匹配的预编译 wheel: | |
| ```bash | |
| pip install torch==2.11.* torchvision==0.26.* torchaudio==2.11.* \ | |
| --index-url https://download.pytorch.org/whl/cu130 | |
| hf download tonera/vitoom-nunchaku \ | |
| nunchaku-1.3.0.dev20260622+cu13.0torch2.11-cp311-cp311-linux_x86_64.whl \ | |
| --local-dir ./wheels | |
| pip install ./wheels/nunchaku-1.3.0.dev20260622+cu13.0torch2.11-cp311-cp311-linux_x86_64.whl | |
| ``` | |
| cu128、cp310、ARM64 aarch64 等 wheel 见 [vitoom-nunchaku 说明](https://huggingface.co/tonera/vitoom-nunchaku)。 | |
| 验证安装: | |
| ```bash | |
| python -c "import nunchaku; from nunchaku import NunchakuChromaTransformer2dModel; print(nunchaku.__version__)" | |
| ``` | |
| ## 使用示例(Diffusers + Nunchaku Transformer) | |
| 以下示例假设已安装 **vitoom-nunchaku**: | |
| ```python | |
| import torch | |
| from diffusers import ChromaPipeline | |
| from nunchaku import NunchakuChromaTransformer2dModel | |
| from nunchaku.utils import get_precision | |
| MODEL = "Chroma1-HD-SVDQ" | |
| REPO_ID = f"tonera/{MODEL}" | |
| if __name__ == "__main__": | |
| transformer = NunchakuChromaTransformer2dModel.from_pretrained( | |
| f"{REPO_ID}/svdq-{get_precision()}_r32-{MODEL}.safetensors" | |
| ) | |
| pipe = ChromaPipeline.from_pretrained( | |
| f"{REPO_ID}", | |
| transformer=transformer, | |
| torch_dtype=torch.bfloat16, | |
| use_safetensors=True, | |
| ).to("cuda") | |
| prompt = "Make Pikachu hold a sign that says 'Nunchaku is awesome', yarn art style, detailed, vibrant colors" | |
| image = pipe(prompt=prompt, guidance_scale=2.5, num_inference_steps=40).images[0] | |
| image.save("Chroma1.png") | |
| ``` | |
| ## 用法二(推荐:vitoom 平台) | |
| 若希望开箱即用的 Web UI、无需手动安装 wheel,可部署 [vitoom](https://github.com/tonera/vitoom)。其 **visual** 模块已内置含 Chroma 支持的 **vitoom-nunchaku**。详见 [docker-usage-cn.md](https://github.com/tonera/vitoom/blob/main/docker-usage-cn.md)。 | |
| ```bash | |
| git clone https://github.com/tonera/vitoom.git | |
| cd vitoom | |
| python scripts/setup_vitoom.py | |
| python scripts/load_vitoom_images.py --components backend,visual | |
| docker compose up -d backend | |
| docker compose -f docker-compose.inference.release.yml --profile visual up -d | |
| ``` | |
| Web UI:**Models** → 下载并激活 **`tonera/Chroma1-HD-SVDQ`** → 在 **Image** 工作区推理。 | |