slice size should round up, not down

[davidweichiang]

Previously, the following would cause an error:

a = pycuda.gpuarray.to_gpu(numpy.arange(16).reshape((4,4)))
b = a[::3]
b.shape
(2, 4)
b[1]
array([12, 13, 14, 15])

[inducer]

Thanks for the fix! (I've applied the same fix in PyOpenCL, too, FYI)

[davidweichiang]

Great, thanks! I'd like to write some extensions to allow, e.g. slice assignment in certain cases (= where 2d or 3d memcpy can be used). Is that something you want, or do you prefer for it to be fully general or nothing?

David

On Jul 5, 2015, at 10:47, Andreas Klöckner notifications@github.com wrote:

Thanks for the fix! (I've applied the same fix in PyOpenCL, too, FYI)

—
Reply to this email directly or view it on GitHub.

[inducer]

Yeah, I'd like that. It turns out Toby Smithe wrote something similar a while ago for PyOpenCL. We then set out to do something fully general instead, but that effort stalled:

inducer/pyopencl#54

Maybe you can scavenge something from there. :)