Update 'README.md'

README.md

@@ -1,3 +1,51 @@
 # Open-Sora
 
-复现类Sora视频生成
+复现类Sora视频生成
+
+
+## Instal
+
+```
+# create a virtual env
+conda create -n opensora python=3.10
+
+# install torch
+# the command below is for CUDA 12.1, choose install commands from 
+# https://pytorch.org/get-started/locally/ based on your own CUDA version
+pip3 install torch torchvision
+
+# install flash attention (optional)
+pip install packaging ninja
+pip install flash-attn --no-build-isolation
+
+# install apex (optional)
+pip install -v --disable-pip-version-check --no-cache-dir --no-build-isolation --config-settings "--build-option=--cpp_ext" --config-settings "--build-option=--cuda_ext" git+https://github.com/NVIDIA/apex.git
+
+# install xformers
+pip3 install -U xformers --index-url https://download.pytorch.org/whl/cu121
+
+# install this project
+git clone https://github.com/hpcaitech/Open-Sora
+cd Open-Sora
+pip install -v .
+
+```
+
+推理，视频生成：
+
+```
+# Sample 16x256x256 (5s/sample)
+torchrun --standalone --nproc_per_node 1 scripts/inference.py configs/opensora/inference/16x256x256.py --ckpt-path ./path/to/your/ckpt.pth
+
+# Sample 16x512x512 (20s/sample, 100 time steps)
+torchrun --standalone --nproc_per_node 1 scripts/inference.py configs/opensora/inference/16x512x512.py --ckpt-path ./path/to/your/ckpt.pth
+
+# Sample 64x512x512 (40s/sample, 100 time steps)
+torchrun --standalone --nproc_per_node 1 scripts/inference.py configs/opensora/inference/64x512x512.py --ckpt-path ./path/to/your/ckpt.pth
+
+# Sample 64x512x512 with sequence parallelism (30s/sample, 100 time steps)
+# sequence parallelism is enabled automatically when nproc_per_node is larger than 1
+torchrun --standalone --nproc_per_node 2 scripts/inference.py configs/opensora/inference/64x512x512.py --ckpt-path ./path/to/your/ckpt.pth
+```
+
+