[petsc-users] Reuse hypre interpolations between successive KSPOnly solves associated with TSStep ?

[Sajid Ali]

Hi Mark,

As Victor explained on the Hypre mailing list, setting
ksp_reuse_preconditioner flag doesn't have the intended effect because SNES
still recomputes the preconditioner at each time step. Setting the flag for
-snes_lag_preconditioner to -1 prevents BoomerAMG from recomputing the
interpolations at each time step.

Thank You,
Sajid Ali | PhD Candidate
Applied Physics
Northwestern University
s-sajid-ali.github.io
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