Re: [starpu-devel] [stencil based code: omitting last row and last column]

[Samuel Thibault <samuel.thibault@inria.fr>]

Hello,

Maxim Abalenkov, le mar. 30 juil. 2024 13:24:24 +0400, a ecrit:
> I need to omit updating the boundary elements (last row and last column 
> elements) of my array. Please see the figure attached. The top left grid 
> depicts the first update stage where the last row needs omitting from the 
> calculation. The bottom left grid shows the second update stage, where the 
> last column of elements needs omitting. The shaded regions are the elements 
> I need to skip.
> 
> My question is: does StarPU have helper routines to skip calculation in 
> those regions?

The starpu_vector_interface does not contain such information. But you
can introduce your own data interface with the added field, and
copy/paste the starpu_vector_filter_block function to add the update of
the field.

Samuel