About the cuda

[November666]

Hello！Is the purpose of using C++ to speed up training? Can it be done without C++ extension?

[XinyiYing]

The purpose of using C++ is to speed up the training process by the parallel computation of cuda. For windows users, they have to install "Visual Studio" for C++ code compilation. The compilation is done by the function "cpp_extension" of pytorch, which accomplish the compilation and produce a bag named "D3D" in the folder ".\Anaconda3\Lib\site-packages". Then, you can use "D3D" in your code. For ubuntu users, they do not have to install any external software and can use "D3D" only after run "bash make.sh".

[November666]

您好，我进行编译的时候报了这样的错误，是由于pytorch版本的问题嘛 ，我的torchversion是0.8的

------------------ 原始邮件 ------------------ 发件人: "XinyiYing/D3Dnet" @.>; 发送时间: 2021年5月6日(星期四) 晚上7:21 @.>; @.**@.>; 主题: Re: [XinyiYing/D3Dnet] About the cuda (#22)

The purpose of using C++ is to speed up the training process by the parallel computation of cuda. For windows users, they have to install "Visual Studio" for C++ code compilation. The compilation is done by the function "cpp_extension" of pytorch, which accomplish the compilation and produce a bag named "D3D" in the folder ".\Anaconda3\Lib\site-packages". Then, you can use "D3D" in your code. For ubuntu users, they do not have to install any external software and can use "D3D" only after run "bash make.sh".

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[XinyiYing]

我看不到你报的错误的图片，麻烦再上传一次

[November666]

谢谢您耐心的解答！这是我报错的错误提示，还想再请问一下，如果直接用纯python的deformable convolution速度会很慢吗？

------------------ 原始邮件 ------------------ 发件人: "XinyiYing/D3Dnet" @.>; 发送时间: 2021年5月7日(星期五) 上午9:50 @.>; @.**@.>; 主题: Re: [XinyiYing/D3Dnet] About the cuda (#22)

我看不到你报的错误的图片，麻烦再上传一次

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[November666]

C:\Users\wgfy.conda\envs\py37gpu\lib\site-packages\torch\utils\cpp_extension.py:274: UserWarning: Error checking compiler version for g++: Command 'g++' returned non-zero exit status 1.   warnings.warn('Error checking compiler version for {}: {}'.format(compiler, error)) building 'DCN' extension C:\Users\wgfy.conda\envs\py37gpu\lib\site-packages\torch\utils\cpp_extension.py:274: UserWarning: Error checking compiler version for cl: [WinError 2] 系统找不到指定的文件。   warnings.warn('Error checking compiler version for {}: {}'.format(compiler, error)) 之前的图片好像还是看不了，我把报错的提示复制过来了 谢谢您耐心的解答！这是我报错的错误提示，还想再请问一下，如果直接用纯python的deformable convolution速度会很慢吗？

------------------ 原始邮件 ------------------ 发件人: "XinyiYing/D3Dnet" @.>; 发送时间: 2021年5月7日(星期五) 上午9:50 @.>; @.**@.>; 主题: Re: [XinyiYing/D3Dnet] About the cuda (#22)

我看不到你报的错误的图片，麻烦再上传一次

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[XinyiYing]

打开cpp_extension.py，把编码改成' gbk'，即下述行修改 match = re.search(r'(\d+).(\d+).(\d+)', compiler_info.decode(' gbk').strip())

[November666]

Emitting ninja build file E:\code\D3Dnet-f3ca2483d37430d113a0b920030d37d8b50c5006\D3Dnet-f3ca2483d37430d113a0b920030d37d8b50c5006\code\dcn\build\temp.win-amd64-3.7\Release\build.ninja... error: [Errno 2] No such file or directory: 'E:\code\D3Dnet-f3ca2483d37430d113a0b920030d37d8b50c5006\D3Dnet-f3ca2483d37430d113a0b920030d37d8b50c5006\code\dcn\build\temp.win-amd64-3.7\Release\build.ninja'

再麻烦您一下，请问这个错误该怎么解决呢，谢谢

------------------ 原始邮件 ------------------ 发件人: "XinyiYing/D3Dnet" @.>; 发送时间: 2021年5月7日(星期五) 下午5:35 @.>; @.**@.>; 主题: Re: [XinyiYing/D3Dnet] About the cuda (#22)

打开cpp_extension.py，把编码改成' gbk'，即下述行修改 match = re.search(r'(\d+).(\d+).(\d+)', compiler_info.decode(' gbk').strip())

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[XinyiYing]

这个问题我没有见过，我猜测可能是 ninja build系统不符合环境配置。建议使用ubuntu系统完成编译比较简单，windows因为环境配置问题经常会出现奇怪的报错。

[November666]

好的，万分感谢

------------------ 原始邮件 ------------------ 发件人: "XinyiYing/D3Dnet" @.>; 发送时间: 2021年5月8日(星期六) 上午10:28 @.>; @.**@.>; 主题: Re: [XinyiYing/D3Dnet] About the cuda (#22)

这个问题我没有见过，我猜测可能是 ninja build系统不符合环境配置。建议使用ubuntu系统完成编译比较简单，windows因为环境配置问题经常会出现奇怪的报错。

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