Looks like its still experimental.
Here are the nodes parameters:
IntParameter mp_nx = new IntParameter("nx","x-dimension of grid",1);
IntParameter mp_ny = new IntParameter("ny","y-dimension of grid",1);
IntParameter mp_nz = new IntParameter("nz","z-dimension of grid",1);
IntParameter mp_periodic = new IntParameter("periodic","noise is periodic?",0);
IntParameter mp_seed = new IntParameter("seed","seed of random number generator",11);
DoubleParameter mp_offset = new DoubleParameter("offset","offset in (result = value*factor+offset) ",0.);
DoubleParameter mp_factor = new DoubleParameter("factor","factor in (result = value*factor+offset)",1.);
Vector3dParameter mp_size = new Vector3dParameter("size","Physical size of grid",new Vector3d(10*MM,10*MM,10*MM));
And the notes from the programmer:
there are 2 versions. periodic which is equivalent to java code and non periodic which is gpu only.
periodic is potentially better, but it seems it has some small artifacts along cubic cell boundaries - possible a bug.