Re: [Starpu-devel] COO and other sparse interfaces in StarPU

[Cyril Roelandt <cyril.roelandt@inria.fr>]

Hello !

On 10/10/2012 04:42 PM, Usman Dastgeer wrote:
> > Cyril however said he
> > could at least implement COO for instance.
> Thanks. I can wait then. Let me know when it is done.

I've been working on the COO interface. Here is an overview of the 
current API:

void
starpu_coo_data_register(
        starpu_data_handle_t *handleptr,
        uint32_t home_node,
        uint32_t nx,
        uint32_t ny,
        uint32_t n_values,
        uintptr_t values,
        uint32_t *columns,
        uint32_t *rows,
        size_t elemsize);

This is pretty straight-forward. The "n_values" parameter is the size of 
the "columns", "rows" and "values" arrays.

The following helpers are defined :

STARPU_COO_GET_COLUMNS(interface)
STARPU_COO_GET_ROWS(interface)
STARPU_COO_GET_VALUES(interface)
STARPU_COO_GET_NX(interface)
STARPU_COO_GET_NY(interface)
STARPU_COO_GET_NVALUES(interface)
STARPU_COO_GET_ELEMSIZE(interface)

so that one can easily manipulate the COO interface in the kernels.


Does that look good to you ? If so, I'll write the documentation and 
commit the code next week.


WBR,
Cyril Roelandt.