Calling a __host__ function from a __global__ function is not allowed

I have this code attempting to generate a random float value to move the sphere by, however I get the error:

calling a host function from a global function is not allowed

How can I go about generating these random numbers to use here if I cant call the function? thank you

You could generate random numbers on the host, and transfer them to the gpu.

You could use cuRAND in the kernel.

[deleted]

That isn’t right. I’m not saying its the source of your problem (which isn’t evident here; however you haven’t shown any code that actually copies non-zero values to random_array).

You may want to remind yourself of basic CUDA programming concepts by studying a code like vectorAdd.