Using CUDA math functions in a __global__ function - Nsight Eclipse Edition

Question

I am trying to use a math function (pow) in a __global__ function but I get this error :

 calling a __host__ function(\"std::pow \") fro         


        

Answer 1

You need to read the error message more carefully. The key piece of information is

std::pow<float, double>

Note: <float,double>. You have a call to pow with a double precision and a single precision argument. The CUDA math library is implemented by template overloading of selected standard library functions, but the arguments you have don't have a matching overload. Fix you code to have either all double precision or all single precision arguments, and the error will disappear.