KSPFBCGSR#
Implements a mathematically equivalent variant of flexible bi-CG-stab, KSPFBCGS. Flexible Krylov Methods
Notes#
This implementation requires fewer MPI_Allreduce() calls than KSPFBCGS and may converge faster
See KSPPIPEBCGS for a pipelined version of the algorithm
Flexible BiCGStab, unlike most Krylov methods, allows the preconditioner to be nonlinear, that is the action of the preconditioner to a vector need not be linear in the vector entries.
Only supports right preconditioning
See Also#
KSP: Linear System Solvers, Flexible Krylov Methods, KSPFBCGSR, KSPPIPEBCGS, KSPBCGSL, KSPBCGS, KSPCreate(), KSPSetType(), KSPType, KSP, KSPBICG, KSPFBCGS, KSPSetPCSide()
Level#
beginner
Location#
src/ksp/ksp/impls/bcgs/fbcgsr/fbcgsr.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages