Re: [Starpu-devel] Lifetime needed for a starpu_data_handle_t

[Samuel Thibault <samuel.thibault@ens-lyon.org>]

Jean-Marie Couteyen, le Tue 09 Sep 2014 17:57:20 +0200, a écrit :
> I was wondering what was the lifetime needed for a starpu_data_handle_t.
> Must it be valid until all the task using it are finished or just until
> starpu_data_unregister_submit ?

It is just a pointer (filled by *_register), so its lifetime is as long
as you need to pass it to StarPU.

> In other word, is this kind of code valid :
> """
> void function_inserting_tasks(double * tmp)
> {
>   starpu_data_handle_t tmp_h;
>   starpu_variable_data_register(&tmp_h, 0, (uintptr_t)tmp, sizeof(double));
>   // Insert tasks using tmp_h.
>   starpu_data_unregister_submit(tmp_h);
> }
> """
> ?

Yes.

Samuel