[petsc-dev] OT: Testers needed for PathScale ENZO 2012

[Jed Brown]

We should make it brain-dead simple for KSP to reorder internally and run
the solve in a low-bandwidth ordering. The Matrix Market orderings are
often so contrived that performance numbers are nearly meaningless.

On Tue, Sep 18, 2012 at 8:05 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>    Good paper,
> http://www.epcc.ed.ac.uk/wp-content/uploads/2011/11/PramodKumbhar.pdf,
> worth reading
>
>
> On Sep 18, 2012, at 7:46 PM, C. Bergström <cbergstrom at pathscale.com>
> wrote:
>
> >
> > Hi
> >
> > I'm hoping someone with some spare cycles and patience is willing to
> help test a nightly ENZO build with petsc.
> >
> > Here's the nightly which won't require a key (It will ask, but it's
> optional)
> >
> http://c591116.r16.cf2.rackcdn.com/enzo/nightly/Linux/enzo-2012-09-18-installer.run
> >
> > For BLAS we're testing against this (and in the future will ship our own
> built version)
> > https://github.com/xianyi/OpenBLAS/
> > ----------
> > I'm specifically looking for feedback on the GPGPU side of this and
> performance.  The reason why anyone would care - We've put a lot of work in
> performance for memory bound kernels, predictable latency and lowest
> latency.  (We don't generate any PTX and go direct to bare metal codegen
> tied with our own very small runtime.  We officially only support Tesla
> 2050/2070 cards at this time, but ping me if you have another card you can
> test with)
> >
> > You can replace nvcc with pathcu (We don't support the nvcc flags)
> >
> > pathcu -c foo.cu # CUDA (Bugs found should be fixed quickly, but expect
> bugs - Thrust and CuSP testing also in progress)
> > pathcc/f90 -hmpp # OpenHMPP
> > pathcc/f90 -openacc # OpenACC and the flag will be changed to -acc soon
> >
> > For more details, documentation and or bug reports please email me
> directly.
> >
> > Cheers,
> >
> >
> > Christopher
> >
> >
>
>
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