Are 3D grids possible? Beginner question

Accelerated Computing CUDA CUDA Programming and Performance
1

Hello all, just getting started in CUDA and I had a quick question.

Can a grid (of thread blocks) be three dimensional (where z > 1)?
The programming guide states:

“To help with complex addressing based on the block ID, an application can
specify a grid as a two-dimensional array of arbitrary size…”

This would seem to imply that a grid of blocks is intrinsically a 2D structure.
However, much (all) of the data I work with is large and 3-space native so for
several reasons I would prefer not to squash everything down to 2D
addressing and then transfer back (i.e. the ol’ fragment program paradigm).

Thanks for your time and help,

Luke

2

The grid of block is a 2D structure and it will stay 2D for a while.

3

Thanks for the speedy reply! Address crunching it is :-)

4

Well, the block layout can be 3D. With the limited number of threads per block however, this only helps you so far.

Peter