Re: [Starpu-devel] initialised SCRATCH buffer

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

Le 05/01/2012 13:17, Samuel Thibault a écrit :
> Xavier Lacoste, le Thu 05 Jan 2012 11:10:49 +0100, a écrit :
> > Yes this is what I mean this array depends on parameters of the task.
> > It is build from the bloc number and the whole sparse matrix structure which
> > are given through cl->args.
> > The bloc number is on the computing device but the sparse matrix is just a
> > pointer to the data and the GPU can't see what is pointed to as it is not
> > copied.
> >
> > Yes I could build the array in my codelet using my cl->args, then send it to
> > the GPU.
> So you mean that initialization can only be performed on a CPU? Isn't it
> possible you create a task just for it? That will declare the CPU-only
> computation time, and still let StarPU perform the transfer as it sees
> fit.
>
> Samuel
Yes I could add an initialization task.
That looks like a good solution. I'll try it.

Thanks.

XL.