dolfin team mailing list archive

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

On Mon, 2006-07-10 at 18:32 +0200, 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:   2054:0691435ba8b47358c9c50a363ac3424c24ca8420
> tag:         tip
> user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> date:        Mon Jul 10 18:13:24 2006 +0200
> files:       configure configure.ac src/kernel/la/dolfin/uBlasLUSolver.h src/kernel/la/dolfin/ublas.h src/kernel/la/uBlasLUSolver.cpp src/test/Makefile src/test/main.cpp
> description:
> Use UMFPACK (if installed) for LU solution of uBlas matrices.
> 

The direct solver for uBlas data types now uses UMFPACK (which is very
fast) if it's installed, otherwise it uses a Krylov solver. When UMFPACK
is installed, the demos in src/demo/pde run nice and fast with uBlas
matrices and vectors.

If you have a Debian-based distribution, you can install UMFPACK by
doing

    apt-get install libumfpack4 libumfpack4-dev 
    
Packages are available for most common Linux distributions under the
name "umfpack" or "ufsparse".

Garth


> 
> changeset:   2053:10663473e69cf9ea1824380b0ef1181744696623
> user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> date:        Fri Jul 07 20:18:29 2006 +0200
> files:       src/kernel/la/dolfin/uBlasMatrix.h
> description:
> Use iterators in uBlasMatrix::disp().
> 
> 
> changeset:   2052:9ab764260e78856ffab0b4cb74f90c8815896478
> user:        "Anders Logg <logg@xxxxxxxxx>"
> date:        Fri Jul 07 19:59:38 2006 +0200
> files:       src/kernel/la/dolfin/uBlasMatrix.h
> description:
> Fix bug in uBlasMatrix::disp(), remove unused variable N
> 
> 
> -------------------------------------------------------
> For more details, visit http://www.fenics.org/hg/dolfin
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