Anasazi::LOBPCGRitzFailure Class Reference

LOBPCGRitzFailure is thrown when the LOBPCG solver is unable to continue a call to LOBPCG::iterate() due to a failure of the algorithm. More...

#include <AnasaziLOBPCG.hpp>

Inheritance diagram for Anasazi::LOBPCGRitzFailure:
Anasazi::AnasaziError

List of all members.


Detailed Description

LOBPCGRitzFailure is thrown when the LOBPCG solver is unable to continue a call to LOBPCG::iterate() due to a failure of the algorithm.

This signals that the Rayleigh-Ritz analysis over the subspace colsp([X H P]) detected ill-conditioning of the projected mass matrix and the inability to generate a set of orthogonal eigenvectors for the projected problem.

This exception is only thrown from the LOBPCG::iterate() routine. After catching this exception, the user can recover the subspace via LOBPCG::getState(). This information can be used to restart the solver.

Definition at line 165 of file AnasaziLOBPCG.hpp.


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