Wishlist

SciRuby Wishlist

This page lists a wishlist of projects that should be implemented for Ruby scientific computing in the future.

GPU computing

Native CUDA kernels with Rubex and RbCUDA

Similar to native CUDA kernel support in Julia, we should have support in Ruby.

Since it is tough to augment the Ruby VM to support this, it can be done in an easier way using Rubex and RbCUDA. For example, a sample Rubex method that would compile to a native CUDA kernel can be defined with cudadef and written like this:

require 'rbcuda_native'
require 'rbcuda'

include RbCUDA::Driver

cudadef kernel_vadd(a, b, c)
    i = threadIdx().x
    c[i] = a[i] + b[i]
    return
end

# generate some data
len = 512
a = rand(len).to_i
b = rand(len).to_i

# allocate & upload to the GPU
d_a = GPU_Array.new(a)
d_b = GPU_Array.new(b)
d_c = GPU_Array.new(d_a)

# execute and fetch results.
kernel_vadd(d_a, d_b, d_c) with cuda(1,len)
c = d_c.to_cpu_array