[petsc-users] MatSetValues and Zero enteries

[Mohammad Mirzadeh]

Hi folks,

I've noticed that MatSetValues explicitly inserts zeros in the matrix if an
element is really zero. Is there a way to drop elements (or not save them in
the first place) that are below a certain tolerance? I realize one way of
doing it is in the application code and when using MatSetValues but I'm just
wondering if PETSc has a function for it?

Thanks,
Mohammad
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