Contents

Iterative methods

Flexible GMRES, though this is not the focus of the package

Preconditioners

Block SSOR and ILU, possibly with block fill-in, and with various methods for explicit and implicit approximation of inverses of pivot blocks

Data structures

Internal, as a C++ class.

Access operations on the data structure

Retrieve rows and scalar information such as the number of nonzeros of the matrix.

Operations using the data structure

Multiply and multiply transpose by the matrix; solve and solve transpose of the preconditioner, both the whole preconditioner, and the left and right split parts.

Manual

Reference manual, 53 pages

Example codes

Yes, in Fortran, C, and C++