One or more new changesets pushed to the primary dolfin repository. A short summary of the last three changesets is included below.
changeset: 4192:40698451fd5958be0f97312cfdb3d812ebb23c49 tag: tip user: "Anders Logg <[EMAIL PROTECTED]>" date: Thu May 15 20:59:58 2008 +0200 files: dolfin/la/SingularSolver.cpp dolfin/la/uBlasKrylovSolver.cpp dolfin/la/uBlasKrylovSolver.h description: Some fixes in uBlasKrylovSolver changeset: 4191:8585a81f729f5267636f9d7f768457ebe1b9aa11 user: "Anders Logg <[EMAIL PROTECTED]>" date: Thu May 15 18:02:44 2008 +0200 files: dolfin/fem/SparsityPatternBuilder.h dolfin/la/GenericSparsityPattern.h dolfin/la/SingularSolver.cpp dolfin/la/SingularSolver.h dolfin/la/SparsityPattern.cpp dolfin/la/SparsityPattern.h dolfin/la/dolfin_la.h dolfin/swig/dolfin_docstrings.i dolfin/swig/dolfin_headers.i sandbox/la/hypre/main.cpp site-packages/dolfin/__init__.py description: Add new class SingularSolver: This class provides a linear solver for singular linear systems Ax = b where A has a one-dimensional null-space (kernel). This may happen for example when solving Poisson's equation with pure Neumann boundary conditions. The solver attempts to create an extended non-singular system by adding the constraint [1, 1, 1, ...]^T x = 0. If an optional mass matrix M is supplied, the solver attempts to create an extended non-singular system by adding the constraint m^T x = 0 where m is the lumped mass matrix. This corresponds to setting the average (integral) of the finite element function with coefficients x to zero. The solver makes not attempt to check that the null-space is indeed one-dimensional. It is also assumed that the system Ax = b retains its sparsity pattern between calls to solve(). changeset: 4190:2f32e4e3748d435fbdf0c2b1fae1f13834d42fa0 user: "Anders Logg <[EMAIL PROTECTED]>" date: Thu May 15 15:11:58 2008 +0200 files: dolfin/la/PETScKrylovSolver.cpp description: Add PCSetFromOptions after initializing Hypre. Enables setting command-line options to Hypre. We really need to clean up the mess that is PETScKrylovSolver.cpp! ---------------------------------------------------------------------- For more details, visit http://www.fenics.org/hg/dolfin _______________________________________________ DOLFIN-dev mailing list [email protected] http://www.fenics.org/mailman/listinfo/dolfin-dev
