Calling a C DLL(CUDA) in LabVIEW

[SP_TT]

Hello Everyone ,

I am trying to call a simple array addition function written in CUDA  C inside LabVIEW 64 . The function works as expected when used in a test C program.

This is the function prototype :

EXTERN MY_CUDA_SUM_EXPORT void myCUDASumInit(void);
EXTERN MY_CUDA_SUM_EXPORT void myCUDASumDestroy(void);
EXTERN MY_CUDA_SUM_EXPORT void myCUDASumProcess(int *c, const int *a, const int *b, int size);

I have attached a snippet of the VI and the DLL .

A and B are the 2 arrays which need to be added ; the result is available in array C . My issue is that , no matter what I do the value returned by C is always that of array B .

Can someone help me with this issue please .

Have a nice day ,

[Jjohnn · Accepted solution]

Is it possible that your output is wired to the "b" node instead of the "c" node (which I think is at the top of the process block)?

[SP_TT]

Indeed , that was the issue . Thanks for your input