[PyCUDA] index multiple blocks and grids

[Lev Givon]

Received from Lev Givon on Thu, Mar 24, 2011 at 07:19:49PM EDT:
> Received from Mike Tischler on Thu, Mar 24, 2011 at 06:30:20PM EDT:
> > Lev,
> > 
> > Thanks for the explanation...that definitely helps.  But how does the indexing 
> > work for a 2d case?
> > 
> >  z1 = numpy.zeros((1024)).astype(numpy.float32)
> >  kernel1(drv.Out(z1),block=(16,16,1),grid=(2,2))
> > 
> > int idx=??
> > int idy =??
> > 
> > Thanks!
> > Mike
> 
> There are a variety of ways. I have attached an example that accesses
> a 2D array as a 1D array.

Sorry - I accidentally transposed the grid dimensions. Change
grid=(4,1) to grid=(1,4) and it should work.

						L.G.