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ITSOL is a library of iterative solvers for general sparse linear
systems of equations. ITSOL can be viewed as an extension of the
itsol module in SPARSKIT. It is written in C and offers a
selection of recently developed preconditioners.
The preconditioner suite includes:
-
ILUK (ILU preconditioner with level of fill)
- ILUT (ILU preconditioner with threshold)
- ILUC (Crout version of ILUT)
- VBILUK (variable block preconditioner with level of fill - with automatic
block detection)
- VBILUT (variable block preconditioner with threshold - with automatic
block detection)
- ARMS (Algebraic Recursive Multilevel Solvers -- includes actually
several methods - In particular the standard ARMS and the ddPQ
version which uses nonsymmetric permutations).
Note that ITSOL is a scalar package. You may find
parallel implentations of some
of the preconditioners listed above in
pARMS .
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