GPU debugging does not work from managed entry point

Question

I am calling AMP C++ library from C# (see http://blogs.msdn.com/b/pfxteam/archive/2011/09/21/10214538.aspx).

However, I found out that GPU debugging is not working in this scenario:

Info:
- unmanaged debugging is enabled for c# project
- GPU debugging is selected for C++ project
- even attaching GPU debugger manually does not work
- (works when executed from C++ console entry point)

Any thoughts? Maybe I forgot something.

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Martin Pozor

Answer 1

Hello Martin,
First check out C++ AMP debugging gotchas if you haven't already - http://blogs.msdn.com/b/nativeconcurrency/archive/2011/09/19/vs-11-developer-preview-gotchas-with-c-amp.aspx

Here's how you can debug the C++ AMP Code in Igor's project:
1.  Right click HelloWorldLib -> Set as startup project
2.  Right click HelloWorldLib -> Properties -> Debugging
3.  Select "GPU C++ Direct3D Compute Debugger" under "Debugger to launch"
4.  For "Command" enter the path of the C# executable
5.  Push F10 to start debugging and the debugger will break in the C++ AMP code

Let me know if you run into any other issues.

-Patrick

Answer 2

Works, thanks a lot.

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Martin Pozor