Re: [Starpu-devel] starpu_data_unregister_submit() and MPI

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

Hello,

Benoît Lizé, le Wed 12 Mar 2014 10:03:38 +0100, a écrit :
> Is there any known issue between the MPI layer in StarPU and
> starpu_data_unregister_submit() ?

Not that I know of.

> I am having trouble using it in my HMatrix code with r12389 (trunk). In this
> code, I submit all the tasks whils StarPU is "paused" (using starpu_pause()
> before starting to submit any task), and starpu_data_unregister_submit() 
> hangs
> here:

Could you also provide the backtraces of other threads?

> I'm calling starpu_data_unregister_submit() on all the nodes, even the ones
> that don't own the handle. Maybe this is not the way it should be done, but 
> I
> couldn't find any reference to it in the documentation.

Well, be it sent over MPI or not, the rule doesn't change: a registered
data has to be unregistered.

Samuel