dolfin team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

On Sat, 2010-02-27 at 18:24 +0100, Anders Logg wrote:
> On Sat, Feb 27, 2010 at 04:32:34PM +0000, Garth N. Wells wrote:
> > On Fri, 2010-02-26 at 14:07 +0100, Anders Logg wrote:
> > > I've added some timings in the sandbox repository with the following results:
> > >
> > >   Direct iteration: 7.23
> > >   Create boundary: 34.27
> > >   Iteration over boundary: 0.03
> > >
> > > This means direct iteration over facets (and skipping interior facets)
> > > is faster than boundary extraction + iteration over boundary.
> > >
> >
> > I'm not happy that this breaks parallel assembly. The change should be
> > reverted until it works in parallel.
> >
> > Garth
> 
> Should be fixed now.
> 

I've rolled Assembler.cpp back to how it was a few days ago because the
fix broke serial assembly. I suggest the we figure out how to handle
interior facets in parallel, which should take care of the assembly over
all facets. 

On the reported speed up, what about for repeated assembly? Is the
BoundaryMesh created and destroyed every time?

Garth

> --
> Anders