CODEWITHSUNDEEP
debuggingcompiler-errorsdecompilingcudafy.net
Martin Hyben
Martin Hyben

Reputation: 21

Cudafy.net with NSight, "Error decompiling kernel" after debug start

I'm using Cudafy.net for GPU computations. Everything works fine unless I try to debug the kernel using NSight. After NSight->"Start CUDA debugging", this error occurs:

"Error decompiling System.Void Network.ActivationFunction(Cudafy.GThread, System.Single[])"

After the error the application crashes. I tried even the most simple kernel I could think of like this one (matches to the error):

        [Cudafy]
        public static void ActivationFunction(GThread t, float[] x)
        {
            // Synapse idx
            int i = t.blockDim.x * t.blockIdx.y * t.gridDim.x           //rows preceeding current row in grid
                   + t.blockDim.x * t.blockIdx.x                        //blocks preceeding current block
                   + t.threadIdx.x;

            x[i] = 1;
        }

I've already searched for solution and found this: cudafy.net with NSight, debugger not working However even after multiple check of all steps, I still can't make the debugger running. I can't even set breakepoint before the app crashes. Maybe there's something wrong with nvcc or cl? Am I missing something?

Thanks.

Upvotes: 2

Views: 126

Answers (1)

jpreed00
jpreed00

Reputation: 893

I was getting this error because the working directory for NSight was not set correctly. You need to set it where the executable for your application is actually running -- when debugging that is typically the debug directory (i.e. C:\somepath\yourproject\bin\Debug).

You set this value via the "NSight User Properties" button in the Solution Explorer.

Upvotes: 1

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