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-----------------
Current contents:
-----------------
Solvers
-------
iters.f : This file currently has several basic iterative linear system
solvers. They are:
CG -- Conjugate Gradient Method
CGNR -- Conjugate Gradient Method on Normal Residual equation
BCG -- Bi-Conjugate Gradient Method
BCGSTAB -- BCG stablized
TFQMR -- Transpose-Free Quasi-Minimum Residual method
GMRES -- Generalized Minimum RESidual method
FGMRES -- Flexible version of Generalized Minimum RESidual method
DQGMRES -- Direct verions of Quasi Generalized Minimum Residual
method
DBCG -- BCG with partial pivoting
Preconditioners
---------------
ilut.f : ILUT + GMRES: a combination of a robust preconditioner
using dual thresholding for dropping strategy and
the GMRES algorithm. ILU0 and MILU0 are also provided
for comparison purposes.
large number of updates on Feb 10, 1992 Y.S.
ILUTP, or ILUT with partial pivoting is also provided.
Drivers
-------
rilut.f : test program for GMRES/ILU*.
It tests three preconditioners ilu0, milu0 and ilut using
GMRES as the solver.
riters.f : test program for ITERS -- the basic iterative solvers
with reverse communication.
The test matrix is generated with GEN57PT.
riter2.f : test program for ITERS. It reads a Harwell/Boeing matrix
from the standard input.
Other
-----
itaux.f : The file contains some of the auxiliary functions that is
required to run the test prgram rilut.f and riters.f It
includes the routine that drive the reverse-communincation
routines and the definitions of the partial differential
equations used to generate the matrix in rilut.f and
riters.f.
executables
-----------
rilut.ex : generated by "make rilut.ex" from the driver rilut.f
riters.ex : generated by "make riters.ex" from the driver riters.f
riter2.ex : generated by "make riter2.ex" from the driver riter2.f
see makefile for the details of the dependencies.
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