Restarted full orthogonalization method for shifted linear systems (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Restarted full orthogonalization method for shifted linear systems (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• Simoncini, V. (2003)
  Restarted full orthogonalization method for shifted linear systems
  in BIT (Nord. Tidskr. Inf-Behandl.)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Simoncini, V. (literal)

Pagina inizio

• 459 (literal)

Pagina fine

• 466 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 43 (literal)

Rivista

• BIT (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Titolo

• Restarted full orthogonalization method for shifted linear systems (literal)

Abstract

• Restarted GMRES is known to be inefficient for solving shifted systems when the shifts are handled simultaneously. Variants have been proposed to enhance its performance. We show that another restarted method, restarted Full Orthogonalization Method (FOM), can effectively be employed. The total number of iterations of restarted FOM applied to all shifted systems simultaneously is the same as that obtained by applying restarted FOM to the shifted system with slowest convergence rate, while the computational cost grows only sub-linearly with the number of shifts. Numerical experiments are reported. (literal)

Prodotto di

• Institute for applied mathematics and information technologies (IMATI) (Istituto)

Incoming links:

Prodotto

• Institute for applied mathematics and information technologies (IMATI) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• BIT (Rivista)