On 01/29/16 10:18, Jakub Jelinek wrote:
On Thu, Jan 28, 2016 at 10:38:51AM -0500, Nathan Sidwell wrote:
This patch adds default compute dimension handling. Users rarely specify
compute dimensions, expecting the toolchain to DTRT. More savvy users would
like to specify global defaults. This patch permits both.
Isn't it better to be able to override the defaults on the library side?
I mean, when when somebody is compiling the code, often he doesn't know the
exact properties of the hw it will be run on, if he does, I think it is
better to specify them explicitly in the code.
I realized that it's actually not possible to markup the code in this way, as an
'intermediate' user. One can exercise complete control by saying exactly the
axis/axes over which a loop is to be partitioned, and then specify the geometry.
But one cannot use the 'auto' feature and have the compiler choose an axis
without also relying on the compiler choosing a size for that axis. As I
already said, IMHO being able to specify a compile-time size is useful.
nathan
