what is default ordering method

[buket at be.itu.edu.tr]

Hi,

I have several questions;

Which ordering method does petsc use by default before matrix factorization?

How can I change the restarted value of Gmres(m)?

Is there any parallel overhead when I run petsc program on single
processor (with mprun -np 1)?


Thank you,
Best Regards,
Buket Benek