Re: [petsc-dev] getting eigen estimates from GAMG to CHEBY

2019-09-27 Thread Mark Adams via petsc-dev
As I recall we attached the eigenstates to the matrix. Is that old attach mechanism still the used/recommended? Or is there a better way to do this now? Thanks, Mark On Thu, Sep 26, 2019 at 7:45 AM Mark Adams wrote: > > >> Okay, it seems like they should be stored in GAMG. >> > > Before we store

Re: [petsc-dev] getting eigen estimates from GAMG to CHEBY

2019-09-26 Thread Mark Adams via petsc-dev
> > Okay, it seems like they should be stored in GAMG. > Before we stored them in the matrix. When you get to the test in Cheby you don't have caller anymore (GAMG). > Why would the PC type change anything? > Oh, the eigenvalues are the preconditioned ones, the PC (Jacobi) matters but it is not

[petsc-dev] getting eigen estimates from GAMG to CHEBY

2019-09-25 Thread Mark Adams via petsc-dev
It's been a few years since we lost the ability to cache the eigen estimates, that smoothed aggregation computes, to chebyshev smoothers. I'd like to see if we bring this back. This is slightly (IMO) complicated by the fact that the smoother PC may not be Jacobi, but I think it is close enough (an