Using CUDA .DLL in VS 2010

Hi everybody!

I have created a CUDA .dll file in Visual Studio 2010. I have the .lib file also.
Now I’m trying to call a function contained the .dll file from another code (the application code).

My application code is the following, it is very simple:

#include “stdafx.h”
#include <cuda_runtime_api.h>

__declspec(dllimport) void ForwardPropagation();

int _tmain(int argc, _TCHAR* argv)

printf("Calling main... \n");
printf("\nDONE! \n");

return 0;


When I try to compile it, it appears the following error in the output section in VS 2010:

1>cuda_vector_app.obj : error LNK2019: unresolved external symbol “__declspec(dllimport) void __cdecl ForwardPropagation(void)” (_imp?ForwardPropagation@@YAXXZ) referenced in function wmain
1>C:\Users\Student3\Documents\cuda_vector_app_3\x64\Debug\cuda_vector_app.exe : fatal error LNK1120: 1 unresolved externals

I’m not sure why this error is appearing because I have implemented another code under the same premises and I don’t have problems with it. I don’t know why for this specific case the compilation presents this error.

All comments and suggestions will be appreciated.

Arturo V.