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# KSPBICG

Implements the Biconjugate gradient method (similar to running the conjugate gradient on the normal equations).

### Options Database Keys

see KSPSolve()

### Notes

this method requires that one be apply to apply the transpose of the preconditioner and operator as well as the operator and preconditioner. Supports only left preconditioning

See KSPCGNE for code that EXACTLY runs the preconditioned conjugate gradient method on the normal equations

### See Also

KSPCreate(), KSPSetType(), KSPType (for list of available types), KSP, KSPBCGS, KSPCGNE

### Level

beginner

### Location

src/ksp/ksp/impls/bicg/bicg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages