Re: [Starpu-devel] [starpu_matrix_filter_block: obtain block sizes, asynchronous interface]

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

Hello,

Maksims Abalenkovs, on ven. 24 nov. 2017 17:26:07 +0000, wrote:
> 1) When I partition the data automatically using the
> “starpu_matrix_filter_block”, is there a way to obtain the block sizes via 
> the
> StarPU API?

You mean, from outside the codelet function?
You can use starpu_data_get_interface_on_node with STARPU_MAIN_RAM, and
then use the usual STARPU_MATRIX_* macros to access sizes etc.

> 2) Do I understand correctly, that when I use asynchronous interface, i.e. 
> plan
> and submit data partition via StarPU routines, there is no way to iterate 
> via
> the blocks using “starpu_data_get_nb_children” and “starpu_data_get_child” 
> from
> the Basic API ([2]http://starpu.gforge.inria.fr/doc/html/
> group__API__Data__Partition.html)?

Indeed, these are intended for synchronous partitioning. In
the asynchronous case, the subdata handles are returned by the
starpu_data_partition_plan call itself.

Samuel