add build pytorch from source

Deeplearning-Framework/Pytorch/README.md

@@ -1,3 +1,4 @@
 # AI-Engineer-Howto
 
-Tất cả những thứ liên quan đến Pytorch & Pytorch-serving
+Tất cả những thứ liên quan đến Pytorch & Pytorch-serving
+- [Build Pytorch from source](docs/build_from_source.md)

Deeplearning-Framework/Pytorch/docs/build_from_source.md

@@ -0,0 +1,30 @@
+# Pytorch
+
+## Build pytorch from source (best config for AMD CPU & NVIDIA-GPU)
+We will use OpenBLAS instead of MKL & MKLDNN
+```
+# Install anaconda (if not)
+curl -O https://repo.anaconda.com/archive/Anaconda3-2020.07-Linux-x86_64.sh
+bash Anaconda3-2020.07-Linux-x86_64.sh
+source ~/anaconda3/bin/activate
+
+# Install dependencies
+conda create -n myenv_pytorch_1.9 python=3.8
+conda activate myenv_pytorch_1.9
+conda install astunparse numpy ninja pyyaml setuptools cmake cffi typing_extensions future six requests dataclasses
+pip install ninja
+
+# Build
+git clone --recursive --branch v1.9.1  https://github.com/pytorch/pytorch.git
+cd pytorch
+export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"}
+USE_NCCL=ON USE_CUDNN=OFF USE_CUDA=ON USE_MKL=OFF USE_MKLDNN=OFF python setup.py install
+```
+## Compatible version
+TorchVision: 0.10.1
+OpenCV: 4.6.0
+MMCV: 1.3.3
+MMCV Compiler: GCC 9.4
+MMCV CUDA Compiler: 11.3
+MMDetection: 2.7.0+e78eee5
+