ksp parallel excecution, question on ex5 ksp tutorials

Pierre-Yves Aquilanti sperif at gmail.com
Thu Apr 2 05:28:49 CDT 2009


i had a few questions on the ex5 tutorial of ksp. It is described as a
parallel execution of two ksp. Does it mean that each ksp solve is running
on a single processor or the both are running in parallel on both processors
(on the cas mpirun -np 2) ? Because i don't really see the distinction with
ex2 of the same tutorial.

If it's not running  two ksp in parallel, each on a single processor (in
ex5), is it possible to do that anyway ? Would i need to directly use MPI or
is there is any Petsc way to do that ?

Thank you very much for your time.

Best Regards

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