Conjugate gradient solvers

Table of Contents

• Options
• Preconditioners

Options

• Preconditioned bi-conjugate gradient (PBiCG)
• Preconditioned bi-conjugate gradient (PBiCGStab)
• Preconditioned conjugate gradient (PCG)

Preconditioners

Preconditioners manipulate the matrix equation to a form that is more readily solved:

\[ A P^{-1} P \vec{x} = \vec{b} \]

• Diagonal preconditioner
• DIC preconditioner
• DILU preconditioner
• FDIC preconditioner
• GAMG preconditioner

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