PETSc acceleration on novel architectures
Matthew Knepley
knepley at gmail.com
Thu Apr 9 13:49:17 CDT 2009
On Thu, Apr 9, 2009 at 11:10 AM, Farshid Mossaiby <mossaiby at yahoo.com>wrote:
>
> Hi,
>
> May I know how can I take a look at current PETSc-GPU?
Nothing is ready yet.
Matt
>
> --- On Thu, 4/9/09, Matthew Knepley <knepley at gmail.com> wrote:
>
> > From: Matthew Knepley <knepley at gmail.com>
> > Subject: Re: PETSc acceleration on novel architectures
> > To: "For users of the development version of PETSc" <
> petsc-dev at mcs.anl.gov>
> > Date: Thursday, April 9, 2009, 7:38 PM
> > On Wed, Apr 8, 2009 at 10:29 PM, Ahmed El Zein
> > <ahmed at azein.com> wrote:
> >
> > > On Wed, 2009-04-08 at 10:52 -0500, Matthew Knepley
> > wrote:
> > > > On Tue, Apr 7, 2009 at 9:51 PM, Ahmed El Zein
> > <ahmed at azein.com> wrote:
> > > > On Tue, 2009-04-07 at 10:39 -0500,
> > Matthew Knepley wrote:
> > > > > On Tue, Apr 7, 2009 at 9:07 AM,
> > Stephen Ball
> > > > > <Stephen.R.Ball at awe.co.uk>
> > wrote:
> > > > > Hi
> > > > >
> > > > > We are keen to start
> > investigating whether or not
> > > > PETSc is
> > > > > suitable for
> > > > > acceleration on novel
> > architectures like GPUs, Cell
> > > > > processors, etc.
> > > > >
> > > > > I would very much like to
> > get your opinions on this.
> > > > >
> > > > > Do you think such an
> > endeavour is at all feasible
> > > > with PETSc?
> > > > > If so,
> > > > > what areas of PETSc do you
> > think our efforts would
> > > > best be
> > > > > spent?
> > > > >
> > > > > Should we for example focus
> > on matrix operations, or
> > > > on
> > > > > specific
> > > > > preconditioners or solvers?
> > Where would be a good
> > > > place to
> > > > > start?
> > > > >
> > > > > Can you suggest some
> > specific routines/functions in
> > > > PETSc that
> > > > > are
> > > > > potential candidates for
> > acceleration?
> > > > >
> > > > > We are actually already working on
> > this, and I plan on
> > > > having a
> > > > > PETSc-GPU
> > > > > come out at the end of the year.
> > > >
> > > >
> > > > What language are you using? I would have
> > thought that OpenCL
> > > > would be
> > > > the best solution. Maybe even rewriting
> > the whole of PETSc in
> > > > OpenCL,
> > > > targeting both multicore CPUs and a few
> > novel architectures at
> > > > the same
> > > > time. AMD and NVIDIA are both going to
> > support OpenCL for
> > > > their GPUs and
> > > > I believe that it will be supported on
> > Intel's larrabee and
> > > > the Cell
> > > > processor.
> > > >
> > > > That is probably a mistake. OpenCL is not mature
> > and only a few
> > > > operations in
> > > > PETSc would really benefit.
> > > I would still be interested in what language you are
> > using for PETSc-GPU
> > > and what PETSc-GPU is?
> >
> >
> > I would like to use OpenCL, but CUDA is it right now.
> >
> > Matt
> >
> >
> > >
> > > Ahmed
> > > >
> > > > Matt
> > > >
> > > >
> > > > Ahmed
> > > >
> > > >
> > > > > Therefore, I suggest working on PCs
> > that
> > > > > are specific to your problems.
> > People are already doing good
> > > > work on
> > > > > sparse
> > > > > matrices in general, and solvers
> > will see no speedup at all,
> > > > since
> > > > > they are all
> > > > > logic.
> > > > >
> > > > > Matt
> > > > >
> > > > >
> > > > > Regards
> > > > >
> > > > > Stephen R. Ball
> > > > > Advanced Technologies
> > > > > HPC
> > > > > DRAS
> > > > > Rm: G17
> > > > > Bldg: E1.1
> > > > > AWE(A)
> > > > > Aldermaston
> > > > > Reading
> > > > > Berkshire
> > > > > ENGLAND
> > > > > RG7 4PR
> > > > > Tel: +44 (0)118 982 4528
> > > > > e-mail:
> > stephen.r.ball at awe.co.uk
> > > > >
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> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > What most experimenters take for
> > granted before they begin
> > > > their
> > > > > experiments is infinitely more
> > interesting than any results
> > > > to which
> > > > > their experiments lead.
> > > > > -- Norbert Wiener
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > What most experimenters take for granted before
> > they begin their
> > > > experiments is infinitely more interesting than
> > any results to which
> > > > their experiments lead.
> > > > -- Norbert Wiener
> > >
> > >
> >
> >
> > --
> > What most experimenters take for granted before they begin
> > their experiments
> > is infinitely more interesting than any results to which
> > their experiments
> > lead.
> > -- Norbert Wiener
>
>
>
>
--
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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