[Developers] PUGH: Checking whether there are enough ghost zones

[Erik Schnetter]

On Tuesday 21 June 2005 15:30, Erik Schnetter wrote:
> Dylan,
>
> your yesterday change to PUGH removes a test whether there are enough
> ghost zones for inter-processor communication.  The test in
> SetupPGV.c (about line 1047) used to be run for all boundaries, and
> is now run only when there are periodic boundaries.  I believe that
> this is incorrect, because this test is still necessary for all
> boundaries. PUGH's current communication mechanism requires for n
> ghost zones at least n interior grid points.  Grids that are too
> small are not handled correctly by PUGH.

Sorry for the false alert; there seem to be other checks in other places 
PUGH that ensure that the domain is not too small.

-erik

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Erik Schnetter <schnetter at aei.mpg.de>   http://www.aei.mpg.de/~eschnett/

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