Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

Orthogonal Factorizations: ScaLAPACK Computational Routines

This section describes the ScaLAPACK routines for the
QR
(RQ)
and
LQ
(QL)
factorization of matrices. Routines for the
RZ
factorization as well as for generalized
QR
and
RQ
factorizations are also included. For the mathematical definition of the factorizations, see the respective LAPACK sections or refer to [SLUG].
Table
"Computational Routines for Orthogonal Factorizations"
lists ScaLAPACK routines that perform orthogonal factorization of matrices.
Computational Routines for Orthogonal Factorizations
Matrix type, factorization
Factorize without pivoting
Factorize with pivoting
Generate matrix Q
Apply matrix Q
general matrices, QR factorization
general matrices, RQ factorization
 
general matrices, LQ factorization
 
general matrices, QL factorization
trapezoidal matrices, RZ factorization
 
 
pair of matrices, generalized QR factorization
 
pair of matrices, generalized RQ factorization