[petsc-users] Naturally ordered to DA vector copy

[Lisandro Dalcin]

On 20 July 2011 01:34, khalid ashraf <khalid_eee at yahoo.com> wrote:
> Hello,
> In my application, I need to do both Finite element(FEM) and Finite
> Difference(FD) computations.
> I am doing the FD using the DA and FEM using natural numbering(x changes
> fastest, then y then z).
> My question is what would be the fastest way to copy the FEM vectors to the
> FD vectors. Looks like
> DAGetAO may provide a mapping between DA vector layout and natural layout.
> Since I am not very familiar with programming using AO, just wanted to ask
> if there is a more efficient/easier way to copy from the naturally ordered
> vector to the DA vector before delving into AO. If I have to use AO, could
> you please redirect me to some related example.
> Thanks in advance.
> Khalid

DMDAGlobalToNaturalBegin/End and DMDANaturalToGlobalBegin/End

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Lisandro Dalcin
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