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Enable preconditioning

Open huanglangwen opened this issue 5 years ago • 1 comments

Preconditioned Newton-Krylov solver seems provide better performance than Exponential-Krylov integrator without preconditioning. It might be a good idea to add preconditioning to expv using the SAI method.

[1] https://ris.utwente.nl/ws/portalfiles/portal/5092923/memo1992.pdf [2] https://doi.org/10.1137/040605461

huanglangwen avatar Jun 01 '20 22:06 huanglangwen

Thanks. Yes, preconditioning would be good to look into.

ChrisRackauckas avatar Jun 02 '20 00:06 ChrisRackauckas