[petsc-users] [petsc-dev] boomerAmg scalability

[Jed Brown]

On Wed, Jan 18, 2012 at 14:03, Ravi Kannan <rxk at cfdrc.com> wrote:

> We did have Hypre Boomer amg. This did not scale, but gives correct
> solution. So we wanted an alternative; hence we approached you for gamg.**
> **
>
> ** **
>
> However for certain cases, gamg crashes. Even for the working cases, it
> takes about 15-20 times more sweeps than the boomer-hypre. Hence it is
> cost-prohibitive.
>

It would help to have a representative test matrix for us to test
aggregation and smoothing strategies.
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