Random generator & CUDA
cuda, random
Solution
You're running init each time you ask for a random value. Instead you should run `curand_init()` once, in a separate kernel at the start of your code. Then when you want a new random value, just call `curand_normal()`. Then the values will change each time you call your device function.
For an example see my answer here.
If you want to use time as a seed instead of thread ID, then pass the value returned by `clock()` or whatever is your favorite time function:
unsigned int seed = (unsigned int) clock64();
Problem
I have a question regarding the random generators in CUDA . I am using Curand to generate random numbers with the following code: ``` __device__ float priceValue(int threadid){ unsigned int seed = threadid ; curandState s; curand_init (seed , 0, 0, &s); float randomWalk = 2; while (abs(randomWalk)> 1) { randomWalk = curand_normal(&s); } return randomWalk; } ``` I have tried to relaunch this code many times, I have always the same output. I could not find what’s wrong in this code. The threads give the same Ids but the curand_normal functions should change at each launching, right?