[petsc-users] Questions abt DM and DMDALocalToLocalBegin / End

[TAY wee-beng]

On 7/4/2014 10:40 AM, Jed Brown wrote:
> but might not be
> negligible if called once for each degree of freedom.
Sorry I don't understand this sentence.

So you mean if I have 3 dof u,v,w, it will not be cheap if I access and 
restore it many times. Is that so?