Contents

Iterative methods

CG, SYMMLQ, GMRES are provided, though these are not the main focus of package; BlockSolve can be interfaced to Petsc for more iterative methods.

Preconditioners

diagonal scaling, block Jacobi with blocks corresponding to the cliques factored out of the quotient graph, incomplete LU and Cholesky.

Data structures

Internal, as a C structure..

Access operations on the data structure

None; the definition of the structure is given in the manual.

Operations using the data structure

Iterative solution of the system and of a shifted system, application of the matrix and the preconditioner.

Manual

Users Manual; 34 pages. This is a complete reference; the user is suggested to use the example codes as templates for applications.

Example codes

Yes