According to this, 
http://article.gmane.org/gmane.comp.science.electromagnetism.meep.general/431/

the C++ version uses complex fields by default.  Perhaps this already 
answers your second question, about why you are using up twice the 
memory you expect to be using up.

Kind Regards,
Matt



On Mon, 7 May 2007, Jun She wrote:

> Hi,
>
> How to set force-complex-fields to false in C++ interface?
>
> Another question about the memory:
> If the computation grid is 1000*1000*200 (symmetry X Y) and set
> force-complex-fields to true, I think the memory consumption is about 5G.
> However, in our cluster, more than 10G memory are used. Is it right?
>
> Many thanks!
>
> BR
> Jun
>

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