出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We consider three improvements to seed methods for Hermitian linear systems with multiple
right-hand sides: only the Krylov subspace for the first system is used for seeding subsequent
right-hand sides, the first right-hand side is solved past convergence, and periodic reorthogonalization
is used in order to control roundoff errors associated with the Conjugate Gradient
algorithm. The method is tested for the case of Wilson fermions near kappa critical and a
considerable speed up in the convergence is observed.
