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