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Install Pytorch for windows

Last updated at Posted at 2018-07-09

#1.Pytorchのサイトを参照
https://pytorch.org/

#2. Get Started で、自分の環境を選択
PowerShellを開き、cmdでコマンドプロンプトにしてから、表示されたコマンドを実行

※以下は、windows & pip $ python 3.5 & CUDA 9.0 を選択した場合

pip3 install http://download.pytorch.org/whl/cu90/torch-0.4.0-cp35-cp35m-win_amd64.whl
pip3 install torchvision

#3.以下のエラーが表示された場合
Could not install packages due to an EnvironmentError: raw write() returned invalid length 2 (should have been between 0 and 1)

win_unicode_consoleを先にインストールしてから、再度whlのインストールを実行

conda install -c anaconda win_unicode_console

参考:バグ回避策有り:Fall Creator Update (Win10) でpython が 「OSError: raw write() returned invalid length・」

#4.Pytorchの動作確認

import torch
torch.__version__

#5.以下のエラーがでる場合
>>> import torch Traceback (most recent call last): File "<stdin>", line 1, in <module> File "D:\Anaconda3\lib\site-packages\torch\__init__.py", line 78, in <module> from torch._C import * ImportError: DLL load failed: このオペレーティング システムでは %1 は実行されません。

intel-openmpをインストール

conda install intel-openmp

参考:Pytorch on Windows gives ImportError

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