Package no.uib.cipr.matrix.sparse
Class GMRES
java.lang.Object
no.uib.cipr.matrix.sparse.AbstractIterativeSolver
no.uib.cipr.matrix.sparse.GMRES
- All Implemented Interfaces:
IterativeSolver
GMRES solver. GMRES solves the unsymmetric linear system
Ax = b
using the Generalized Minimum Residual method. The GMRES iteration is
restarted after a given number of iterations. By default it is restarted
after 30 iterations.-
Field Summary
Fields inherited from class no.uib.cipr.matrix.sparse.AbstractIterativeSolver
iter, M
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Constructor Summary
Constructors -
Method Summary
Methods inherited from class no.uib.cipr.matrix.sparse.AbstractIterativeSolver
checkSizes, getIterationMonitor, getPreconditioner, setIterationMonitor, setPreconditioner
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Constructor Details
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GMRES
Constructor for GMRES. Uses the given vector as template for creating scratch vectors. Typically, the solution or the right hand side vector can be passed, and the template is not modified. The iteration is restarted every 30 iterations- Parameters:
template
- Vector to use as template for the work vectors needed in the solution process
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GMRES
Constructor for GMRES. Uses the given vector as template for creating scratch vectors. Typically, the solution or the right hand side vector can be passed, and the template is not modified- Parameters:
template
- Vector to use as template for the work vectors needed in the solution processrestart
- GMRES iteration is restarted after this number of iterations
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Method Details
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setRestart
public void setRestart(int restart) Sets the restart parameter- Parameters:
restart
- GMRES iteration is restarted after this number of iterations
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solve
Description copied from interface:IterativeSolver
Solves the given problem, writing result into the vector.- Parameters:
A
- Matrix of the problemb
- Right hand sidex
- Solution is stored here. Also used as initial guess- Returns:
- The solution vector x
- Throws:
IterativeSolverNotConvergedException
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