What is going on with those results? In both cases the first parallel code is seriously outperforming the single-core. I'd be interested in seeing the two log_summary outputs.
I can only assume that the PETSc developers have an (if (serial); sleep(10);) buried somewhere in the src from their last Gordon Bell run :) A On Thu, Apr 11, 2013 at 6:33 PM, Chris Kees <cekees at gmail.com> wrote: > Thanks a lot. I did a little example with the Bratu problem and posted it > here: > > https://proteus.usace.army.mil/home/pub/17/ > > I used boomeramg instead of geometric multigrid because I was getting > an error with the options above: > > %mpiexec -np 4 ./ex5 -mx 129 -my 129 -Nx 2 -Ny 2 -pc_type mg -pc_mg_levels > 2 > [0]PETSC ERROR: --------------------- Error Message > ------------------------------------ > [0]PETSC ERROR: Argument out of range! > [0]PETSC ERROR: New nonzero at (66,1) caused a malloc! > [0]PETSC ERROR: > ------------------------------------------------------------------------ > > I like the ice paper and will try to get the contractor started on > reproducing those results. > > -Chris > > On Wed, Apr 10, 2013 at 1:13 PM, Nystrom, William D <wdn at lanl.gov> wrote: > > Sorry. I overlooked that the URL was using git protocol. My bad. > > > > Dave > > > > ________________________________________ > > From: Jed Brown [five9a2 at gmail.com] on behalf of Jed Brown [ > jedbrown at mcs.anl.gov] > > Sent: Wednesday, April 10, 2013 12:10 PM > > To: Nystrom, William D; For users of the development version of PETSc; > Chris Kees > > Subject: Re: [petsc-dev] examples/benchmarks for weak and strong scaling > exercise > > > > "Nystrom, William D" <wdn at lanl.gov> writes: > > > >> Jed, > >> > >> I tried cloning your tme-ice git repo as follows and it failed: > >> > >> % git clone --recursive git://github.com/jedbrown/tme-ice.git tme_ice > >> Cloning into 'tme_ice'... > >> fatal: unable to connect to github.com: > >> github.com[0: 204.232.175.90]: errno=Connection timed out > >> > >> I'm doing this from an xterm that allows me to clone petsc just fine. > > > > You're using https or ssh to clone PETSc, but the git:// to clone > > tme-ice. The LANL network is blocking that port, so just use the https > > or ssh protocol. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20130411/59765d35/attachment.html>
