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Gradient at ghost cells only?

To: petsc-users@mcs.anl.gov
Subject: Gradient at ghost cells only?
From: billy@dem.uminho.pt
Date: Sat, 4 Mar 2006 16:18:09 +0000
Reply-to: petsc-users@mcs.anl.gov
Sender: owner-petsc-users@mcs.anl.gov
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Hi,

I need the gradient of 5 scalars at ghost cells and I was thinking of creating
5x3 vectors with VecCreateGhost(). Right now, I calculate the gradient during
each iteration and I don't store it's value. 
I would like to calculate, store and exchange the gradient at the ghost cells
only, to minimize memory requirements. How is the best way to do that?

Billy.

Follow-Ups:
- Re: Gradient at ghost cells only?
  - From: "Matthew Knepley" <knepley@mcs.anl.gov>
- Re: Gradient at ghost cells only?
  - From: Barry Smith <bsmith@mcs.anl.gov>

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