Python CuPy on MacBookPro

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CUDAのインストール
CUDA関連の環境変数の設定 (plist)
CuPyのインストール
なんか動いた

CUDAのインストール †

→Python CUDA on MacBookPro

↑

CUDA関連の環境変数の設定 (plist) †

~~Shellから動かすぶんには、~/.bashrc とかに定義すればいいけど、PyCharm? に環境変数を渡すためには launchd に設定する必要がある~~ この設定は macOS 10.12 Sierra 以降は無効 → どうすればいいかは後述
- ~~launchd は macOS の systemd/initd~~
~~~/Library/LaunchAgents?/ に plist 形式でログイン時に実行するコマンドを定義する~~

~~-~/Library/LaunchAgents?/PATH.plist~~

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>PATH</string>
<key>ProgramArguments</key>
<array>
  <string>/bin/launchctl</string>
  <string>setenv</string>
  <string>PATH</string>
  <string>/Developer/NVIDIA/CUDA-9.1/bin:$PATH</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>

~~~/Library/LaunchAgents?/DYLD_LIBRARY_PATH.plist~~

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>DYLD_LIBRARY_PATH</string>
<key>ProgramArguments</key>
<array>
  <string>/bin/launchctl</string>
  <string>setenv</string>
  <string>DYLD_LIBRARY_PATH</string>
  <string>/usr/local/cuda/lib:/Developer/NVIDIA/CUDA-9.1/lib:$DYLD_LIBRARY_PATH</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>

この設定は macOS 10.12 Sierra 以降はこうする
- 上記の設定だと、CuPy? が Cuda のライブラリを見つけられずに、実行時の (PythonからGPUコードへの) コンパイルでエラーが起きて動かない
```
cupy.cuda.nvrtc.NVRTCError: NVRTC_ERROR unknown (7)
cupy.cuda.compiler.CompileException: nvrtc: error: failed to load builtins
```

Cuda関係のライブラリは、$(HOME)/lib:/usr/local/lib/:/lib/:/usr/lib のどこかに Symbolic link を作る

#!/bin/sh
for file in $1/*
do
  b=`basename $file`
  ln -vs $file ~/lib/$b
done

みたいなシェルスクリプトを作って

[~]$ ./mklink.sh /Developer/NVIDIA/CUDA-9.1/lib
/Users/atsushi/lib/libcublas.9.1.dylib -> /Developer/NVIDIA/CUDA-9.1/lib/libcublas.9.1.dylib
/Users/atsushi/lib/libcublas.dylib -> /Developer/NVIDIA/CUDA-9.1/lib/libcublas.dylib
/Users/atsushi/lib/libcublas_device.a -> /Developer/NVIDIA/CUDA-9.1/lib/libcublas_device.a
/Users/atsushi/lib/libcublas_static.a -> /Developer/NVIDIA/CUDA-9.1/lib/libcublas_static.a
/Users/atsushi/lib/libcudadevrt.a -> /Developer/NVIDIA/CUDA-9.1/lib/libcudadevrt.a
/Users/atsushi/lib/libcudart.9.1.dylib -> /Developer/NVIDIA/CUDA-9.1/lib/libcudart.9.1.dylib
...

↑

CuPy?のインストール †

$ git clone https://github.com/cupy/cupy.git
$ cd cupy
$ git checkout v4.2.0
$ python setup.py clean
$ MACOSX_DEPLOYMENT_TARGET=10.13 CC=clang CXX=clang++ python setup.py install
$ pip install .
Processing /Users/atsushi/PycharmProjects/cupy
Requirement already satisfied: numpy>=1.9.0 in /Users/atsushi/.pyenv/versions/anaconda3-5.1.0/envs/jupyter-env/lib/python3.6/site-packages (from cupy==4.2.0) (1.14.3)
Requirement already satisfied: six>=1.9.0 in /Users/atsushi/.pyenv/versions/anaconda3-5.1.0/envs/jupyter-env/lib/python3.6/site-packages (from cupy==4.2.0) (1.11.0)
Requirement already satisfied: fastrlock>=0.3 in /Users/atsushi/.pyenv/versions/anaconda3-5.1.0/envs/jupyter-env/lib/python3.6/site-packages (from cupy==4.2.0) (0.3)
Building wheels for collected packages: cupy
  Running setup.py bdist_wheel for cupy ... done
  Stored in directory: /private/var/folders/cm/p00lclws0jxdmjlb89qyqq580000gn/T/pip-ephem-wheel-cache-47vpnvhd/wheels/f3/4b/b6/cf3092440fb9ebf35bfb25a4de43ee2a9609fae446258288e9
Successfully built cupy
Installing collected packages: cupy
  Found existing installation: cupy 4.2.0
    Uninstalling cupy-4.2.0:
      Successfully uninstalled cupy-4.2.0
Successfully installed cupy-4.2.0

↑

なんか動いた †

import cupy as cp
a = cp.array([1,2,3,4,5])
b = cp.array([6,7,8,9,10])
c = a + b
print (c)

[ 7  9 11 13 15]

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