Does cntk support cuda 7.5? about cntk

[Alexey-Kamenev]

Hello,
CNTK currently supports 7.0 only but I think it should be easy to modify it to compile with 7.5
Try doing the following: open Source\Math\MathCUDA.vcxproj and change following lines:

1. CUDA_PATH_V7_0 to CUDA_PATH_V7_5
2. $(VCTargetsPath)\BuildCustomizations\CUDA 7.0.props to $(VCTargetsPath)\BuildCustomizations\CUDA 7.5.props
3. $(VCTargetsPath)\BuildCustomizations\CUDA 7.0.targets to $(VCTargetsPath)\BuildCustomizations\CUDA 7.5.targets

Hope this helps, let me know if you still have problems compiling the code.

[holmes2016]

Many thanks, Alexey,
I got another problem. The EvaDll project cannot be loaded due to an error, "$(UsesCuda) evaluates to "" instead of a boolean". Do you have any idea about it?
Thanks,

[Alexey-Kamenev]

Hmm, I don't know what's the problem yet, however, if everything else builds fine, you can still run CNTK even without EvalDll (which is really just a sample demonstrating how to load trained models). I know it's not ideal but hopefully will unblock you for now.

[deprecatedslocum]

I built CNTK with CUDA 7.5. Here are the changes I made:

In ActionsLib.vcxproj, MathCUDA.vcxproj, and Math.vcxproj, there are a number of references to CUDA dll's, e.g. "cudart64_70.dll". Change the "70" version suffix to "75" , e.g. "cudart64_75.dll'

In MathCUDA.vcsproj, change the CudaPath attribute from "$(CUDA_PATH_V7_0)" to "$(CUDA_PATH_V7_5)". There is a reference to "CUDA 7.0.props" - change this to "CUDA 7.5.props". Similarly, change "CUDA 7.0.targets" to "CUDA 7.5.targets".

You can download a copy of my files here: https://www.dropbox.com/sh/7cbuxz2rde9gjxe/AADPaPS5UtovRuQFbBfnb3W7a?dl=0

[holmes2016]

Great! Thanks a lot. Actually I haven't gotten a successful build yet. I have another mess - both vs2012 and vs2013 installed on my machine, where I also run theano. Not sure if the issue of having two compilers has been addressed.

[deprecatedslocum]

I have VS 2013 and 2015 on my machine. I think I did the build with 2013? What problem are you having with your build?

On Feb 12, 2016, at 5:50 PM, holmes2016 [email protected] wrote:

Great! Thanks a lot. Actually I haven't gotten a successful build yet. I have another mess - both vs2012 and vs2013 installed on my machine, where I also run theano. Not sure if the issue of having two compilers has been addressed.

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[holmes2016]

After applied the changes made in your project files, I still got the following when build math project:
Error 1 error MSB4062: The "Nvda.Build.CudaTasks.SanitizePaths" task could not be loaded from the assembly C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\BuildCustomizations\Nvda.Build.CudaTasks.v7.5.dll. Could not load file or assembly 'Microsoft.Build.Utilities.v3.5, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\BuildCustomizations\CUDA 7.5.targets 160 9 MathCUDA
Error 2 error C2440: '' : cannot convert from 'initializer-list' to 'std::array<size_t,0x02>' (TensorView.cpp) c:\users\jlu\projects\cntk\source\math\TensorView.h 32 1 Math

[deprecatedslocum]

Sorry, no idea what's going on there.

On Wed, Feb 17, 2016 at 9:12 AM, holmes2016 [email protected]
wrote:

After applied the changes made in your project files, I still got the
following when build math project:
Error 1 error MSB4062: The "Nvda.Build.CudaTasks.SanitizePaths" task could
not be loaded from the assembly C:\Program Files
(x86)\MSBuild\Microsoft.Cpp\v4.0\V120\BuildCustomizations\Nvda.Build.CudaTasks.v7.5.dll.
Could not load file or assembly 'Microsoft.Build.Utilities.v3.5,
Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one
of its dependencies. The system cannot find the file specified. Confirm
that the declaration is correct, that the assembly and all its dependencies
are available, and that the task contains a public class that implements
Microsoft.Build.Framework.ITask. C:\Program Files
(x86)\MSBuild\Microsoft.Cpp\v4.0\V120\BuildCustomizations\CUDA 7.5.targets
160 9 MathCUDA
Error 2 error C2440: '' : cannot convert from 'initializer-list' to
'std::array' (TensorView.cpp)
c:\users\jlu\projects\cntk\source\math\TensorView.h 32 1 Math

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#61 (comment).

[holmes2016]

No problem. I guess it is related to my VS and cuda setup. But my theano is able to run with cuda 7.5.
Thanks

[mradmila]

We will be adding support for CUDA 7.5 within the next month.

[holmes2016]

Cool! Thanks

[rold2007]

It seems like CUDA 7.5 support was added as of April 5th 2016.
https://github.com/Microsoft/CNTK/wiki/News#april-2016