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

---

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