dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Tue, Jun 29, 2010 at 11:09:47AM +0200, Johannes Ring wrote:
> I backported this benchmark to 0.9.7 and it ran for over 17 minutes.

!

That's quite a good speedup. :-)

> On DOLFIN-dev it run for about 55 seconds. Maybe we should reduce
> the
> problem size somewhat before I backport further?

Sure, but not too much. I think we can improve it further (by a factor
10 or so) and then it might run too quickly. I also suspect DOLFIN
0.9.7 to be the slowest (or one of the slowest).

Try reducing SIZE by a factor 2 or so.

--
Anders


> Johannes
>
> On Tue, Jun 29, 2010 at 9:56 AM,  <noreply@xxxxxxxxxxxxx> wrote:
> > ------------------------------------------------------------
> > revno: 4824
> > committer: Anders Logg <logg@xxxxxxxxx>
> > branch nick: dolfin-dev
> > timestamp: Tue 2010-06-29 09:54:04 +0200
> > message:
> >  Add new benchmark bench/common/progress. Johannes, please backport.
> > added:
> >  bench/common/
> >  bench/common/progress/
> >  bench/common/progress/cpp/
> >  bench/common/progress/cpp/SConstruct
> >  bench/common/progress/cpp/main.cpp
> >
> >
> >
> > Your team DOLFIN Core Team is subscribed to branch lp:dolfin.
> > To unsubscribe from this branch go to https://code.launchpad.net/~dolfin-core/dolfin/main/+edit-subscription
> >
> > === added directory 'bench/common'
> > === added directory 'bench/common/progress'
> > === added directory 'bench/common/progress/cpp'
> > === added file 'bench/common/progress/cpp/SConstruct'
> > --- bench/common/progress/cpp/SConstruct        1970-01-01 00:00:00 +0000
> > +++ bench/common/progress/cpp/SConstruct        2010-06-29 07:54:04 +0000
> > @@ -0,0 +1,14 @@
> > +import os, commands
> > +
> > +# Get compiler from pkg-config
> > +compiler = commands.getoutput('pkg-config --variable=compiler dolfin')
> > +
> > +# Create a SCons Environment based on the main os environment
> > +env = Environment(ENV=os.environ, CXX=compiler)
> > +
> > +# Get compiler flags from pkg-config
> > +env.ParseConfig('pkg-config --cflags --libs dolfin')
> > +
> > +# Program name
> > +env.Program('bench', 'main.cpp')
> > +
> >
> > === added file 'bench/common/progress/cpp/main.cpp'
> > --- bench/common/progress/cpp/main.cpp  1970-01-01 00:00:00 +0000
> > +++ bench/common/progress/cpp/main.cpp  2010-06-29 07:54:04 +0000
> > @@ -0,0 +1,32 @@
> > +// Copyright (C) 22010 Anders Logg.
> > +// Licensed under the GNU LGPL Version 2.1.
> > +//
> > +// First added:  2010-06-29
> > +// Last changed: 2010-06-29
> > +
> > +#include <dolfin.h>
> > +
> > +using namespace dolfin;
> > +
> > +#define NUM_REPS 5
> > +#define SIZE 1000000000
> > +
> > +int main(int argc, char* argv[])
> > +{
> > +  info("Creating progress bar with %d steps (%d repetitions)",
> > +       SIZE, NUM_REPS);
> > +
> > +  for (int i = 0; i < NUM_REPS; i++)
> > +  {
> > +    Progress p("Stepping", SIZE);
> > +    double sum = 0.0;
> > +    for (int j = 0; j < SIZE; j++)
> > +    {
> > +      sum += 0.1;
> > +      p++;
> > +    }
> > +    dolfin::cout << "sum = " << sum << dolfin::endl;
> > +  }
> > +
> > +  return 0;
> > +}
> >
> >
> >

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