dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

We need to think a bit about how a discrete Function is represented. At 
the moment a Function is defined by a mesh, a finite element and a 
vector, and the finite element provides a simple dof mapping. What we 
need is that a Function is defined by a DofMap and a vector, where the 
DofMap is associated with a vector and a finite element.

Any ideas?

Garth


Anders Logg wrote:
> Very nice!
>
> /Anders
>
>
>         On Tue, Dec 05, 2006 at 09:51:02PM +0100, DOLFIN wrote:
> > One or more new changesets pushed to the primary DOLFIN repository.
> > A short summary of the last three changesets is included below.
> >
> > changeset:   2500:81caeea1ec9f7ee49058dcacc0204bd3dfaa11d4
> > tag:         tip
> > user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> > date:        Tue Dec 05 21:50:43 2006 +0100
> > files:       src/kernel/fem/FEM.cpp src/kernel/fem/dolfin/FEM.h
> > description:
> > Use DofMap in FEM to get dof mapping and to compute number of nonzeroes per matrix row. This gives big memory savings for some problems. For /src/demo/pde/elasticity memory use was approx. 600mb, now 200mb.
> >
> > The sparsity pattern could be used when intialising uBlas matrices which will give a major speed up.
> >
> >
> > changeset:   2499:a9b743b159ccc730ba463751ec018a440b00480d
> > parent:      2497:a9be37db26e6668c6c83ac27423d478ef1b79e93
> > parent:      2498:2d0904d34b61e8a1f9132326bd74851e5b94946e
> > user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> > date:        Tue Dec 05 21:30:50 2006 +0100
> > files:       
> > description:
> > merge
> >
> >
> > changeset:   2498:2d0904d34b61e8a1f9132326bd74851e5b94946e
> > parent:      2491:5d1dc976cd3c2897f43db2b60e9ca405928c2dba
> > user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> > date:        Tue Dec 05 21:29:35 2006 +0100
> > files:       src/kernel/fem/DofMap.cpp src/kernel/fem/dolfin/DofMap.h
> > description:
> > Fix memory leak in DofMap.
> >
> >
> > ----------------------------------------------------------------------
> > For more details, visit http://www.fenics.org/hg/dolfin
> > _______________________________________________
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