Re: [Starpu-devel] starpu_mpi_insert_task() and profiling

[Xavier Lacoste <xavier.lacoste@inria.fr>]

For the execute_on_worker issue, I'll add a

#define STARPU_EXECUTE_ON_WORKER (15<<16)  

And create a patch modifying starpu_mpi_insert_task.c / starpu_insert_task_util.c that i'll send you.

STARPU_EXECUTE_ON_WORKER, workerid, would set workerid and execute_on_a_specific_worker except if workerid is -1.

I have to modify my code to validate my changes before sending the patch.

For the profiling issue maybe I could do an other patch adding #define STARPU_TASKPTR (16<<16)  which would trigger task->destroy=0 and copy task pointer to the given address.

That would give STARPU_TASKPTR, (struct starpu_task **) &(taskptr),

Have a nice day,

XL.

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Xavier Lacoste

xavier.lacoste@inria.fr

INRIA Bordeaux Sud-Ouest

200, avenue de la Vieille Tour

33405 Talence Cedex

Tél : +33 (0)5 24 57 40 69

Le 10 déc. 2013 à 09:21, Xavier Lacoste <xavier.lacoste@inria.fr> a écrit :

Hello,

An other question about starpu_mpi_insert_task() :

Is it possible to set the execute_on_a_specific_worker / workerid via starpu_mpi_insert_task() ?

Regards,

XL.

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Xavier Lacoste

xavier.lacoste@inria.fr

INRIA Bordeaux Sud-Ouest

200, avenue de la Vieille Tour

33405 Talence Cedex

Tél : +33 (0)5 24 57 40 69

Le 9 déc. 2013 à 17:32, Xavier Lacoste <xavier.lacoste@inria.fr> a écrit :

Hello,

I'm thinking of modifying PaStiX + StarPU source code so that it works with MPI.

As I understand the more convenient way is to use starpu_mpi_insert_task() which will handle all the required communication between nodes.

But if I go from the starpu_task_submit() model to the insert_task model, I cannot get profilling info from my tasks after execution as I have no struct starpu_task anymore.

(I print my profiling info as done in examples/profiling/profiling.c)

Is there a way to use the starpu_mpi_insert_task(), tell StarPU to set the destroy field to 0, and get the generated task to be able to do retrieve some profiling info from it ?

Maybe I could do it through a callback function but wouldn't this increase the computational time before starpu_wait_for_all() returns ?

Have a nice day,

XL.

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Xavier Lacoste

xavier.lacoste@inria.fr

INRIA Bordeaux Sud-Ouest

200, avenue de la Vieille Tour

33405 Talence Cedex

Tél : +33 (0)5 24 57 40 69