~njansson/dolfin/hpc : changes

~njansson/dolfin/hpc » Changes from revision 2668.1.18

Rev	Summary	Authors	Date
2668.1.18	Added option to set custom linker flags. One can now also us... Added option to set custom linker flags. One can now also use the environment variables CXXFLAGS and LINKFLAGS to set custom compiler/linker flags.	Johannes Ring	16 years ago
2668.1.17	Add support for attaching arbitrarily named data to meshes Add support for attaching arbitrarily named data to meshes in preparation for integration with VMTK. It is now possible to attach an arbitrary number of MeshFunction<uint> to a mesh. Each data set is associated with a user-specified string. Example: MeshFunction<uint>* f = mesh.data().create("boundary indicators", 2); f[0] = 3 f[1] = 3 ... MeshFunction<uint>* g = mesh.data()["boundary indicators"]; File format: <?xml version="1.0" encoding="UTF-8"?> <dolfin xmlns:dolfin="http://www.fenics.org/dolfin/"> <mesh celltype="tetrahedron" dim="3"> <vertices size="4"> <vertex index="0" x="0.000000" y="0.000000" z="0.000000"/> <vertex index="1" x="1.000000" y="0.000000" z="0.000000"/> <vertex index="2" x="0.000000" y="1.000000" z="0.000000"/> <vertex index="3" x="0.000000" y="0.000000" z="1.000000"/> </vertices> <cells size="1"> <tetrahedron index="0" v0="0" v1="1" v2="2" v3="3"/> </cells> <data> <meshfunction name="boundary facet cells" type="uint" dim="2" size="4"> <entity index="0" value="0"/> <entity index="1" value="0"/> <entity index="2" value="0"/> <entity index="3" value="0"/> </meshfunction> <meshfunction name="boundary facet numbers" type="uint" dim="2" size="4"> <entity index="0" value="0"/> <entity index="1" value="1"/> <entity index="2" value="2"/> <entity index="3" value="3"/> </meshfunction> <meshfunction name="boundary indicators" type="uint" dim="2" size="4"> <entity index="0" value="0"/> <entity index="1" value="0"/> <entity index="2" value="1"/> <entity index="3" value="1"/> </meshfunction> </data> </mesh> </dolfin>	Anders Logg	16 years ago
2668.1.16	merge merge	Anders Logg	16 years ago
2668.1.15	Reorganization of data Mesh: Reorganization of data Mesh: - Move topology, geometry, cell_type from MeshData to Mesh - MeshData will be used for storing auxiliary mesh data	Anders Logg	16 years ago
2668.1.14	Add new function DirichletBC::setSubSystem(), allowing modif... Add new function DirichletBC::setSubSystem(), allowing modification of the sub system for which a BC has been set.	Anders Logg	16 years ago
2668.1.13	merge. merge.	Garth N. Wells	16 years ago
2668.1.12	merge. merge.	Garth N. Wells	16 years ago
2668.1.11	merge. merge.	Garth N. Wells	16 years ago
2668.1.10	Remove default_la_types.h, not needed anymore. Remove default_la_types.h, not needed anymore.	Anders Logg	16 years ago
2668.1.9	Make linear algebra backend dynamic. It should now be possib... Make linear algebra backend dynamic. It should now be possible to choose the default linear algebra backend (for Vector and Matrix) by dolfin_set("linear algebra backend", "PETSc"); both in C++ and Python. Valid options are uBLAS, PETSc, Epetra. The default is still PETSc if available, otherwise uBLAS.	Anders Logg	16 years ago
2668.1.8	added other solvers and preconditioners added other solvers and preconditioners	Kent-Andre Mardal	16 years ago
2668.1.7	bug fix in ifdefs bug fix in ifdefs	Kent-Andre Mardal	16 years ago
2668.1.6	more clean up more clean up	Kent-Andre Mardal	16 years ago
2668.1.5	clean up clean up	Kent-Andre Mardal	16 years ago
2668.1.4	added Epetra solvers (only gmres with amg work currently). added Epetra solvers (only gmres with amg work currently).	Kent-Andre Mardal	16 years ago
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

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