- Primary support is for preconditioned Krylov subspace methods.
- Conjugate gradients (CG)
- Generalized Minimal Residuals (GMRES)
- Biconjugate Gradients Squared (BCGS)
- Transpose-Free Quasi-minimal Residuals (TFQMR)
- Bi-CGSTAB
- etc.
- Support for a variety of preconditioners (m-step Jacobi,
m-step SSOR, ILU, etc.).
- Variety of usage modes:
- as a ``black box''
- as a toolkit for algorithm development
- as an exploratory tool (via the GUI)
- GUI (Tcl/Tk), which provides:
- automated building of library and test code,
- intuitive introduction to package capabilities, and
- analysis of test problems or systems dumped from a
host code.
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