Function like rand(), to generate random number in CUDA _global_ kernel?

Question

I am trying to create a Random generator for initialization of a vector.

The kernel function that I wrote in CUDA is as below:

__global__ void randgenvec( int *a, int t) {
    int tid = blockIdx.x; // handle the data at this index
    if (tid < t){
        a[tid] = rand() % 100; //****ang replacement for rand() here expect cuRAND?*****
    }
}

I got to know that I cant use rand() function inside a kernel function. Is there any other function which I can replace with rand().

I know we have cuRAND library which we can use. But want to make my code more portable and light and cuRAND needs linker for execution, which I don't want to use.

The objective of my randomisation is to generate any int between 1 to 100.

By linker, I mean :: linker flag -lcurand

Any other suggestion much appreciated.

Answer 1

attempt this

 unsigned short lfsr = 0xACE1u;
  unsigned bit;

  unsigned randomize()
  {
    bit  = ((lfsr >> 0) ^ (lfsr >> 2) ^ (lfsr >> 3) ^ (lfsr >> 5) ) & 1;
    return lfsr =  (lfsr >> 1) | (bit << 15);
  }