ZigMa: A DiT-style Zigzag Mamba Diffusion Model (ECCV 2024)

ECCV 2024

Oral Talk in ICML 2024 Workshop on Long Context Foundation Models (LCFM)

This repository represents the official implementation of the paper titled "ZigMa: A DiT-style Zigzag Mamba Diffusion Model (ECCV 2024)".

Vincent Tao Hu, Stefan Andreas Baumann, Ming Gui, Olga Grebenkova, Pingchuan Ma, Johannes Schusterbauer, Björn Ommer

We present ZigMa, a scanning scheme that follows a zigzag pattern, considering both spatial continuity and parameter efficiency. We further adapt this scheme to video, separating the reasoning between spatial and temporal dimensions, thus achieving efficient parameter utilization. Our design allows for greater incorporation of inductive bias for non-1D data and improves parameter efficiency in diffusion models.

🎓 Citation

Please cite our paper:

bibtex @InProceedings{hu2024zigma, title={ZigMa: A DiT-style Zigzag Mamba Diffusion Model}, author={Vincent Tao Hu and Stefan Andreas Baumann and Ming Gui and Olga Grebenkova and Pingchuan Ma and Johannes Schusterbauer and Björn Ommer}, booktitle = {ECCV}, year={2024} }

:whitecheckmark: Updates

• May. 24th, 2024: 🚀🚀🚀 New checkpoints for FacesHQ1024, landscape1024, Churches256 datasets.
• April. 6th, 2024: Support for FP16 training, and checkpoint function, and torch.compile to achieve better memory utilization and speed boosting.
• April. 2th, 2024: Main code released.

Quick Demo

```python from model_zigma import ZigMa

imgdim = 32 inchannels = 3

model = ZigMa( inchannels=inchannels, embeddim=640, depth=18, imgdim=imgdim, patchsize=1, hastext=True, dcontext=768, ncontexttoken=77, device="cuda", scantype="zigzagN8", usepe=2, )

x = torch.rand(10, inchannels, imgdim, imgdim).to("cuda") t = torch.rand(10).to("cuda") _context = torch.rand(10, 77, 768).to("cuda") o = model(x, t, y=context) print(o.shape) ```

Improved Training Performance

In comparison to the original implementation, we implement a selection of training speed acceleration and memory saving features including gradient checkpointing | torch.compile | gradient checkpointing | training speed | memory | | :-----------: | :--------------------: | :------------: | :----: | | ❌ | ❌ | 1.05 iters/sec | 18G | | ❌ | ✔ | 0.93 steps/sec | 9G | | ✔ | ❌ | 1.8 iters/sec | 18G |

torch.compiles is for indexing operation: here and here

🚀 Training

CelebaMM256

Sweep-2, 1GPU bash accelerate launch --num_processes 1 --num_machines 1 --mixed_precision fp16 train_acc.py model=sweep2_b1 use_latent=1 data=celebamm256_uncond ckpt_every=10_000 data.sample_fid_n=5_000 data.sample_fid_bs=4 data.sample_fid_every=10_000 data.batch_size=8 note=_

Zigzag-8, 1GPU bash CUDA_VISIBLE_DEVICES=4 accelerate launch --num_processes 1 --num_machines 1 --mixed_precision fp16 --main_process_ip 127.0.0.1 --main_process_port 8868 train_acc.py model=zigzag8_b1 use_latent=1 data=celebamm256_uncond ckpt_every=10_000 data.sample_fid_n=5_000 data.sample_fid_bs=4 data.sample_fid_every=10_000 data.batch_size=4 note=_

UCF101

Baseline, multi-GPU bash CUDA_VISIBLE_DEVICES="0,1,2,3" accelerate launch --num_processes 4 --num_machines 1 --multi_gpu --mixed_precision fp16 --main_process_ip 127.0.0.1 --main_process_port 8868 train_acc.py model=3d_sweep2_b2 use_latent=1 data=ucf101 ckpt_every=10_000 data.sample_fid_n=20_0 data.sample_fid_bs=4 data.sample_fid_every=10_000 data.batch_size=4 note=_

Factorized 3D Zigzag: sst, multi-GPU bash CUDA_VISIBLE_DEVICES="0,1,2,3" accelerate launch --num_processes 4 --num_machines 1 --multi_gpu --mixed_precision fp16 --main_process_ip 127.0.0.1 --main_process_port 8868 train_acc.py model=3d_zigzag8sst_b2 use_latent=1 data=ucf101 ckpt_every=10_000 data.sample_fid_n=20_0 data.sample_fid_bs=4 data.sample_fid_every=10_000 data.batch_size=4 note=_

🚀 Sampling

FacesHQ 1024

You can directly download the model in this repository. You also can download the model in python script: ```python from huggingfacehub import hfhub_download

hfhubdownload( repoid="taohu/zigma", filename="faceshq10240090000.pt", local_dir="./checkpoints", ) ``` huggingface model repo

|Dataset | Checkingpoint|Model |data| |---|---|---|---| |faceshq1024.pt|faceshq10240090000.pt|model=s1024zigzag8b2old|data=facehq1024| |landscape1024|landscape10240210000.pt|model=s1024zigzag8b2old|data=landscapehq1024| |Churches256|churches2560280000.pt|model=zigzag8b1pe2|data=churches256| |Coco256|zigzagN8b1pe2coco14bs480400000.pt|mode=zigzag8b1pe2|data=coco14 (31.0) |

1GPU sampling bash CUDA_VISIBLE_DEVICES="2" accelerate launch --num_processes 1 --num_machines 1 sample_acc.py model=s1024_zigzag8_b2_old use_latent=1 data=facehq_1024 ckpt_every=10_000 data.sample_fid_n=5_000 data.sample_fid_bs=4 data.sample_fid_every=10_000 data.batch_size=8 sample_mode=ODE likelihood=0 num_fid_samples=5_000 sample_debug=0 ckpt=checkpoints/faceshq1024_0060000.pt The sampled images will be saved both on wandb (disable with use_wandb=False) and directory samples/

🛠️ Environment Preparation

cuda==11.8,python==3.11, torch==2.2.0, gcc==11.3(for SSM enviroment)

python=3.11 # support the torch.compile for the time being. https://github.com/pytorch/pytorch/issues/120233#issuecomment-2041472137 bash conda create -n zigma python=3.11 conda activate zigma conda install -c "nvidia/label/cuda-11.8.0" cuda-toolkit conda install pytorch torchvision pytorch-cuda=11.8 -c pytorch -c nvidia pip install torchdiffeq matplotlib h5py timm diffusers accelerate loguru blobfile ml_collections wandb pip install hydra-core opencv-python torch-fidelity webdataset einops pytorch_lightning pip install torchmetrics --upgrade pip install opencv-python causal-conv1d cd dis_causal_conv1d && pip install -e . && cd .. cd dis_mamba && pip install -e . && cd .. pip install moviepy imageio #wandb.Video() need it pip install scikit-learn --upgrade pip install transformers==4.36.2 pip install numpy-hilbert-curve # (optional) for generating the hilbert path pip install av # (optional) to use the ucf101 frame extracting pip install -v -U git+https://github.com/facebookresearch/xformers.git@main#egg=xformers #for FDD metrics

Installing Mamba may cost a lot of effort. If you encounter problems, this issues in Mamba may be very helpful.

Create a file under the directory ./config/wandb/default.yaml:

yaml key: YOUR_WANDB_KEY entity: YOUR_ENTITY project: YOUR_PROJECT_NAME

Q&A

• If you meeet some issues for installing ssm, maybe you can find solution here: https://github.com/state-spaces/mamba/issues

📷 Dataset Preparation

Due to privacy issue, we cannot share the dataset here, basically, we use MM-CelebA-HQ-Dataset from https://github.com/IIGROUP/MM-CelebA-HQ-Dataset, we organize into the format of webdataset to enable the scalable training in multi-gpu.

Webdataset Format: - image: image.jpg # ranging from [-1,1], shape should be [3,256,256] - latent: img_feature256.npy # latent feature for latent generation, shape should be [4,32,32]

The dataset we use include: - MM-CelebA-HQ for 256 and 512 resolution training - FacesHQ1024 for 1024 resolution - UCF101 for 16x256x256 resolution

Trend

🎫 License

This work is licensed under the Apache License, Version 2.0 (as defined in the LICENSE).

By downloading and using the code and model you agree to the terms in the LICENSE.