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Make all linear solvers accept a preconditioner #469
Description
All the linear solvers in psydac/linalg/solvers.py should accept a preconditioner, i.e. a LinearOperator object which approximates the inverse operator. As a consequence, we should reduce the number of solver classes (e.g. merge ConjugateGradient with PConjugateGradient).
Activity
[-]Make all solvers accept a preconditioner and reduce number of classes (e.g. merge `ConjugateGradient` with `PConjugateGradient`)[/-][+]Make all linear solvers accept a preconditioner[/+]campospinto commentedon Dec 17, 2025
Actually this issue is only partially completed. Not all the linear solvers accept a preconditioner for now.
Refactor CG AND BiCGSTAB, have pc baked in the same class (#512)
Update from upstream 2026-07-23 (#71)