[petsc-users] memory increase in a transient calculation but no valgrind errors

[Jed Brown]

On Sat, Dec 24, 2011 at 14:10, Dominik Szczerba <dominik at itis.ethz.ch>wrote:

> I do not understand: is there something in Petsc of this sort that I
> could use for my unstructured meshes or you meant I have to implement
> it myself?
>

If you implement DM to the extent of providing DMCreateGlobalVector(), then
DMGetGlobalVector()/DMRestoreGlobalVector() will work for you. Otherwise
you implement it yourself. This kind of caching is a very common pattern
for data structure reuse.
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