[petsc-users] Euclid/Hypre running slow

Mark Adams mfadams at lbl.gov
Tue Nov 19 18:42:48 CST 2013

This sounds like a hypre issues.  Euclid/Hypre is not use much AFAIK so it
might have some problems that have not been addressed.

On Tue, Nov 19, 2013 at 12:11 PM, Manav Bhatia <bhatiamanav at gmail.com>wrote:

> Hi,
>     I am using ilu(k) preconditioner from Euclid/Hypre on my Mac OS 10.9
> box with 12 processors and openmpi v1.7.3 from macports.
>     I find that for 1 CPU (-np 1) the code runs reasonably fast, but when
> multiple processors are included the solver runs significantly slow (by
> orders of magnitude). I ran the time profiler on one of the processes
> spawned by openmpirun, and it seems to be taking a lot of time in
> MPI_Waitall called from Euclid_dhSetup.
>     This could very well be a Hypre issue, but I wanted to check to see if
> anynoe on the Petsc list has experience a similar problem.
>     Any suggestions/inputs are welcome.
> Thanks,
> Manav
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