[Users] MoL Arrays

[Yosef Zlochower]

On 02/24/2012 03:00 AM, Roland Haas wrote:
> Hello Christian,
>
>> I am wondering why MoL does not have support for arrays anymore (the provided
>> functions are all commented out). I guess there is a particular reason for
>> this?
> As far as I understand it, the problem is with mesh refinement and the
> step-ahead in the Berger-Oliger scheme. Before a fine step is taken, the
> coarser grids step ahead so that there is data for prolongation. For an
> array this would require extra copies of the array for the stepping
> ahead. If you never feed the array content back into the grid then you
> might be able to get away updating in global mode (or on the finest
> level) and essentially do a unigrid evolution.
>
> The discussion is here:
> http://cactuscode.org/pipermail/developers/2007-September/005428.html
> (Tanja Bode had the problem already while at PSU)
>
> Yours,
> Roland
>
>
When was this changed? The RIT code uses MoL to evolve grid arrays (we 
use the Maxwell
version of ET). It requires some nasty code to get the arrays evolved 
correctly and you need
to make sure that, for a given a level, there is only 1 component per 
processor.


>
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-- 
Dr. Yosef Zlochower
Center for Computational Relativity and Gravitation
Assistant Professor
School of Mathematical Sciences
Rochester Institute of Technology
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Rochester, NY 14623

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Phone: +1 585-475-6103

yosef at astro.rit.edu

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