itl::search_space_exhaustion Struct Reference

Exception for iterative solvers that exhausted the search space, i.e. search direction(s) parallel to already visited Krylov subspace. More...

#include <exception.hpp>

Inheritance diagram for itl::search_space_exhaustion:
mtl::runtime_error itl::unexpected_orthogonality

List of all members.

Public Member Functions

 search_space_exhaustion (const char *s="Iterative solvers that exhausted the search space, i.e. search direction(s) parallel to already visited Krylov subspace")
 Error can be specified more precisely in constructor if desired.

Detailed Description

Exception for iterative solvers that exhausted the search space, i.e. search direction(s) parallel to already visited Krylov subspace.

Either your matrix is too badly conditioned or your termination criterion is too strict for the used arithmetic (maybe use Gnu Multi-precision library).


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