[yt-users] Issue loading data with yt

[B.W. Keller]

Hi Matt,

This sounds similar to a bug that I (thought)  I had fixed a while back.
I'll take a look at your issue, see if I can reproduce it and put in a fix.

Ben

On Mon, Oct 31, 2016 at 11:06 AM, Matthew Robert Brinson <mbrinson at uwm.edu>
wrote:

> Hi yt-users,
>
> Let’s try this again. The file I sent the first time was too large.
>
> I’m using yt version 3.3.1, and I’ve recently encountered an issue loading
> data correctly. I’m running SPH simulations of white dwarf mergers and want
> to know what the mass fractions of different elements are at different
> times. I have two files that contain the data: 1) a tipsy file, 2) and a
> text file that contains the mass fraction values of helium-4. The tipsy
> file loads just fine and I’m able to access the information from the helium
> file once the tipsy file is loaded. For some reason though, when I have
> more than 262144 particles in my simulation, yt does not load the helium
> mass fraction values correctly anymore. I’ve initialized all particles to
> have a 4% helium mass fraction, and all of the particles up to and
> including the particle indexed by 262143 have this value, but after that
> the particles all have 0% according to yt. I’ve checked the helium files
> directly and all values are at 4%. I’m confused as to why yt would stop
> loading values correctly after a certain point.
>
> I’ve included two tipsy files as well as their corresponding helium mass
> fraction files. I have also written a script called
> visualization_test_script.py that makes scatter plots of the white dwarfs
> showing particles that have correct and incorrect values of helium. I can
> send more tipsy files if necessary, but they are too large to send any more
> here.
>
> Thanks,
> Matt
>
>
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