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

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

Maxim Abalenkov, le mar. 30 juil. 2024 17:30:41 +0400, a ecrit:
> How are you? Thank you for your quick response. I have been reading StarPU
> documentation 
> ([1]https://files.inria.fr/starpu/doc/html/DataManagement.html#
> PartitioningData) and found a routine called
> ‘starpu_matrix_filter_pick_vector’:
> 
> 
>     In addition, contiguous vectors can be picked from a matrix along the Y
>     dimension by using starpu_matrix_filter_pick_vector_y() with
>     starpu_data_filter::get_child_ops set to
>     starpu_matrix_filter_pick_vector_child_ops(). An example is in the file
>     examples/filters/fmatrix_pick_vector.c.
> 
> 
> I looked at the example in ‘fmatrix_pick_vector.c’, but it seems it picks 
> only
> one vector from a matrix.
> Can I pick out multiple vectors with this routine?

Yes, the example does that.

> Also I don’t understand what does the parameter POS do?

As mentioned in the documentation: “The starting position on Y-axis is
set in starpu_data_filter::filter_arg_ptr.”

> If yes, maybe it would be a more elegant approach?

I don't really see the relation with your previous problem.

Samuel