[petsc-users] testing scalability for ksp/ex22.c

[Jed Brown]

On Fri, Feb 24, 2012 at 11:49, Francis Poulin <fpoulin at uwaterloo.ca> wrote:

> I don't seem to have the hydra in my bin folder but I do have petscmpiexec
> that I've been using.
>

That's just the name of my mpiexec. Use whichever one is used with your
build of PETSc.


>
>
> Use these, it will run the same method and sizes as the options I gave for
> ex22 before.
>
> mpiexec.hydra -n 2 ./ex45 -da_grid_x 5 -da_grid_y 5 -da_grid_z 5
> -da_refine 5 -ksp_monitor -pc_type mg -mg_levels_ksp_type richardson
> -mg_levels_pc_type sor -log_summary
>
>
>
> Also, I want to install PetSc on an SGI machine that I have access to.  I
> have been told that using MPT would give better performance compared to
> mpich2.  When I configure petsc on this server I don't suppose
>
> -with-mpi-dir=/opt/sgi/mpt
>
>  the above would work because of the different name.  Do you have a
> suggestion as to what I could try?
>

It's just the way you launch parallel jobs.
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