Using library code (specifically curand) with CUDALink

Questions
, ,
1

Needs[“CUDALink`”]
gausvSource = "
#include <curand_kernel.h>
global void gausv( float *out )
{
curandState_t curand_state;
curand_init ( 0, 0, 0, &curand_state );
*out = curand_normal( &curand_state );
}";
CUDAFunctionLoad[gausvSource, “gausv”, {{“Float”, _, “Output”}}, 256]

yields a series of errors like:

curand_kernel.h(558): error: this declaration may not have extern “C”
linkage

Wrapping the include, the function, or the whole thing in extern "C" { } changes the message to:

CUDALink encountered an invalid program.

So, how does one correctly use library code with CUDALink?

2

andre at mathematica.stackexchange.com found the answer. CUDAFunctionLoad wraps the function in extern “C” { }. I needed to unwrap the include as follows:

}
#include <curand_kernel.h>
extern \"C\" {

(backslashes needed to quote the quotes within a quoted string ;-). Thanks, andre!