[Users] init_3_timelevels and nans on past timelevels

[Yosef Zlochower]

Hi,

   I have been running into an issue where I when I interpolate an 
evolved function I get nans even though there are no nans on the 
gridfunction itself. The nans appear to arise when the past timelevels 
(at iteration 0) are initialized by init_3_timelevels and occur near the 
buffer regions. As the evolution proceeds, these bad past timelevels are 
overwritten with seemingly good data. Is this the expected behavior of 
init_3_timelevels?

Also, I have been trying to use visit to see what is going on. I used 
CarpetIOHDF5::output_all_timelevels = true, and I think this means that 
the past timelevels show up as different components of the same 
gridfunction although I haven't been able to determine how the component 
number is related to the actual components of the grid and the different 
timelevels.

Thanks


-- 
Dr. Yosef Zlochower
Center for Computational Relativity and Gravitation
Associate Professor
School of Mathematical Sciences
Rochester Institute of Technology
85 Lomb Memorial Drive
Rochester, NY 14623

Office:74-2067
Phone: +1 585-475-6103

yosef at astro.rit.edu

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