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Asked: 2026-05-19T21:54:31+00:00

I’m looking for a simple way to generate a random floats between 0.0 and

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I’m looking for a simple way to generate a random floats between 0.0 and 1.0 for multiple threads in parallel. This is my kernel so far..

  attributes(global) subroutine rand_kernel()
     implicit none

     integer :: tid
     real :: r

     ! Thread ID
     tid = threadIdx%x

     ! Generate random number
     call <some random number generator> (r)

     ! Randomise array
     d_array(tid) = r

   end subroutine rand_kernel

I’ve been looking around in forums and reading the CURAND manual, but I still can’t figure out what to do. I’m not even sure if there are any random number libraries for CUDA FORTRAN.
I just need a push in a right direction then I can write myself a decent random number generator.

Thanks for the help

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1 Answer

  1. Editorial Team

    I found an article explaining how to call a CUDA C implemented pseudo-random number generator (the Mersenne Twister implementation from the CUDA SDK) from a CUDA Fortran code.

    Details can be found in the section “Calling a CUDA C Random Number Generator” of this article:
    http://www.pgroup.com/lit/articles/insider/v2n1a4.htm

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