TensorFlow 准备 JupyterLab 交互式笔记本环境，方便我们边写代码、边做笔记。
基础环境
以下是本文的基础环境，不详述安装过程了。
Ubuntu
- Ubuntu 18.04.5 LTS (Bionic Beaver)
- ubuntu-18.04.5-desktop-amd64.iso
CUDA
- CUDA 11.2.2
- cuda_11.2.2_460.32.03_linux.run
- cuDNN 8.1.1
- libcudnn8_8.1.1.33-1+cuda11.2_amd64.deb
- libcudnn8-dev_8.1.1.33-1+cuda11.2_amd64.deb
- libcudnn8-samples_8.1.1.33-1+cuda11.2_amd64.deb
Anaconda
- Anaconda Python 3.8
- Anaconda3-2020.11-Linux-x86_64.sh
conda activate base
安装 JupyterLab
Anaconda 环境里已有，如下查看版本：
jupyter --version
不然，如下进行安装：
conda install -c conda-forge jupyterlab
安装 TensorFlow
创建虚拟环境 tf，再 pip 安装 TensorFlow：
# create virtual environment
conda create -n tf python=3.8 -y
conda activate tf
# install tensorflow
pip install --upgrade pip
pip install tensorflow
测试：
$ python - <<EOF
import tensorflow as tf
print(tf.__version__, tf.test.is_built_with_gpu_support())
print(tf.config.list_physical_devices('GPU'))
EOF
2021-04-01 11:18:17.719061: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcudart.so.11.0
2.4.1 True
2021-04-01 11:18:18.437590: I tensorflow/compiler/jit/xla_cpu_device.cc:41] Not creating XLA devices, tf_xla_enable_xla_devices not set
2021-04-01 11:18:18.437998: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcuda.so.1
2021-04-01 11:18:18.458471: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:941] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2021-04-01 11:18:18.458996: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1720] Found device 0 with properties:
pciBusID: 0000:01:00.0 name: GeForce RTX 2060 computeCapability: 7.5
coreClock: 1.35GHz coreCount: 30 deviceMemorySize: 5.79GiB deviceMemoryBand 245.91GiB/s
2021-04-01 11:18:18.459034: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcudart.so.11.0
2021-04-01 11:18:18.461332: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcublas.so.11
2021-04-01 11:18:18.461362: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcublasLt.so.11
2021-04-01 11:18:18.462072: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcufft.so.10
2021-04-01 11:18:18.462200: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcurand.so.10
2021-04-01 11:18:18.462745: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcusolver.so.10
2021-04-01 11:18:18.463241: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcusparse.so.11
2021-04-01 11:18:18.463353: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcudnn.so.8
2021-04-01 11:18:18.463415: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:941] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2021-04-01 11:18:18.463854: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:941] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2021-04-01 11:18:18.464170: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1862] Adding visible gpu devices: 0
[PhysicalDevice(name='/physical_device:GPU:0', device_type='GPU')]
Solution: Could not load dynamic library 'libcusolver.so.10'
cd /usr/local/cuda/lib64
sudo ln -sf libcusolver.so.11 libcusolver.so.10
安装 IPython kernel
在虚拟环境 tf 里，安装 ipykernel 与 Jupyter 交互。
# install ipykernel (conda new environment)
conda activate tf
conda install ipykernel -y
python -m ipykernel install --user --name tf --display-name "Python TF"
# run JupyterLab (conda base environment with JupyterLab)
conda activate base
jupyter lab
另一种方式，可用 nb_conda 扩展，其于笔记里会激活 Conda 环境：
# install ipykernel (conda new environment)
conda activate tf
conda install ipykernel -y
# install nb_conda (conda base environment with JupyterLab)
conda activate base
conda install nb_conda -y
# run JupyterLab
jupyter lab
最后，访问 http://localhost:8888/ ：
参考
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