KSPFBCGS#

Implements the flexible BiCGStab method. Flexible Krylov Methods

Notes#

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.

KSPFBCGSR provides another variant of this algorithm that requires fewer MPI_Allreduce() calls and my converge faster

See KSPPIPEBCGS for a pipelined version of the algorithm

Only supportst right preconditioning

See Also#

KSP: Linear System Solvers, Flexible Krylov Methods, KSPFBCGSR, KSPPIPEBCGS, KSPBCGSL, KSPFBCGS, KSPCreate(), KSPFGMRES, KSPSetType(), KSPType, KSP, KSPBICG, KSPSetPCSide()

Level#

beginner

Location#

src/ksp/ksp/impls/bcgs/fbcgs/fbcgs.c


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Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages