On Jan 21, 2014, at 3:23 PM, Steven R. Brandt <[email protected]> wrote:

> When can the Elliptic solver be called? During an evolution? Only when 
> complete coarsest grid steps are complete?

In principle, the solver is encapsulated in a single function call that can be 
scheduled whenever needed. In practice, its behavior in iterations where only 
some refinement levels are evolved depends on when exactly this function is 
scheduled, and which type of multigrid cycling is selected (V-cycle, FMG, 
etc.). In any case, the mechanism to set which levels are included and in which 
order is relatively straightforward, so one could code in a customized solution 
with little effort.

Best,
Eloisa

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