Re: [Starpu-devel] [BUG] tests/datawizard/reclaim.c: hangs forever in task_wait_for_all when using OpenCL.

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

On 03/09/2012 12:25 PM, Samuel Thibault wrote:
> Cyril Roelandt, le Fri 09 Mar 2012 03:36:59 +0100, a écrit :
> > With CUDA, things start to take an awful lot of time :
> >
> > $ STARPU_NCPUS=0 STARPU_NCUDA=1 STARPU_NOPENCL=0 time -p
> > ./tests/datawizard/reclaim
> > ...
> > real 46.55
> > user 33.84
> > sys 15.13
>
> This is actually expected. The test is meant to exercise the memory
> reclaiming code, which is used only for gpus.

OK. Could we use less tasks, so that the test does not run for ages ?

> > With OpenCL, the program just hangs for ever: the program is stuck in
> > starpu_task_wait_for_all().
>
> OpenCL's port might not actually support reporting memory outage in all
> situations.

Is that something we can fix ? This really looks like Ludovic's bug, so 
this is likely to be a problem in real applications.

Cyril.