~njansson/dolfin/hpc : changes

~njansson/dolfin/hpc » Changes from revision 2668.1.3

From Revision 2668.1.3 to 2652

Rev	Summary	Authors	Date
2668.1.3	added other way of solving the singular system. added other way of solving the singular system. Result: 0 KSP preconditioned resid norm 2.779379236226e+01 true resid norm 5.311486273119e+01 \|\|Ae\|\|/\|\|Ax\|\| 1.000000000000e+00 1 KSP preconditioned resid norm 2.459253515003e+01 true resid norm 5.770320073802e+01 \|\|Ae\|\|/\|\|Ax\|\| 1.086385199375e+00 2 KSP preconditioned resid norm 5.494001567997e-15 true resid norm 7.105427357601e-15 \|\|Ae\|\|/\|\|Ax\|\| 1.337747476363e-16 Krylov solver (gmres, hypre) converged in 2 iterations.	Kent-Andre Mardal	16 years ago
2668.1.2	merge merge	Anders Logg	16 years ago
2668.1.1	Update ChangeLog Update ChangeLog	Anders Logg	16 years ago
2668	Some fixes in uBlasKrylovSolver Some fixes in uBlasKrylovSolver	Anders Logg	16 years ago
2667	Add new class SingularSolver: 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().	Anders Logg	16 years ago
2666	Add PCSetFromOptions after initializing Hypre. Enables setti... Add PCSetFromOptions after initializing Hypre. Enables setting command-line options to Hypre. We really need to clean up the mess that is PETScKrylovSolver.cpp!	Anders Logg	16 years ago
2665	Add new function setrow() matching getrow() to interface Add new function setrow() matching getrow() to interface	Anders Logg	16 years ago
2664	Add test program for GMRES + AMG for singular system in sand... Add test program for GMRES + AMG for singular system in sandbox	Anders Logg	16 years ago
2663	Use KSPMonitorTrueResidualNorm when "Krylov monitor converge... Use KSPMonitorTrueResidualNorm when "Krylov monitor convergence" is set.	Anders Logg	16 years ago
2662	Add min() function to MeshSize for simple extraction of mini... Add min() function to MeshSize for simple extraction of minimal mesh size. Example: h = MeshSize(shape, mesh) dt = 0.5*h.min()	Anders Logg	16 years ago
2661	Update ChangeLog Update ChangeLog	Anders Logg	16 years ago
2660	Change LinearSolver from base class to general wrapper Change LinearSolver from base class to general wrapper for all solvers.	Anders Logg	16 years ago
2659	Update ChangeLog Update ChangeLog	Anders Logg	16 years ago
2658	Add new protected member normal() in Function. Useful when Add new protected member normal() in Function. Useful when implementing functions for inflow boundary conditions.	Anders Logg	16 years ago
2657	Fix for exposing protected methods to Python (only for direc... Fix for exposing protected methods to Python (only for director classes).	Ola Skavhaug	16 years ago
2656	Added option enableResolveCompiler (with default value 1) su... Added option enableResolveCompiler (with default value 1) such that one can skip the "Resolving compiler..." step when absolutely sure that the selected compiler will work with the currently enabled set of external dependencies.	Johannes Ring	16 years ago
2655	Remove LU and GMRES classes, use solve instead Remove LU and GMRES classes, use solve instead	Anders Logg	16 years ago
2654	Import solver types and preconditioner types in Python Import solver types and preconditioner types in Python	Anders Logg	16 years ago
2653	Make solve() function more intelligent, can now also handle ... Make solve() function more intelligent, can now also handle Krylov methods	Anders Logg	16 years ago
2652	Renames: Preconditioner --> PreconditionerType, KrylovMethod... Renames: Preconditioner --> PreconditionerType, KrylovMethod --> SolverType In preparation for a more general solve() function that can handle Krylov methods as well as LU.	Anders Logg	16 years ago

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