[Users] HDF5 3D output separate time files

[Erik Schnetter]

Hayley

The simplest way would be to post-process the HDF5 files after the
simulation has finished. HDF5 comes with tools that manipulate HDF5 files,
e.g. adding/removing compression, and also copying or selecting objects
from one file to another. You can also use this to combine output from all
processes into a single file. For post-processing, having one file per
variable (!) and iteration is often the most convenient.

-erik



On Tue, Jun 20, 2017 at 9:04 AM, Hayley Macpherson <
hayley.macpherson at monash.edu> wrote:

> Hello,
> I am using the Einstein Toolkit for cosmological simulations, and would
> like to ask a question regarding my HDF5 3D output.
> Currently I am outputting all 3D snapshots to one HDF5 file (as per
> default). I would like to have my output as separate files for each time
> snapshot, to help with ease of copying and visualisation in post
> processing.
>
> I found the following parameter in IOUtil, and changed it accordingly for
> a simulation:
> IO::out_timesteps_per_file = 1
> However this made no difference to my output, I still had multiple time
> snapshots in the one file.
>
> Is there another way to separate my 3D HDF5 output into one file per
> snapshot?
> Any help anyone can offer would be much appreciated!
>
> Kind regards,
> Hayley Macpherson
>
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-- 
Erik Schnetter <schnetter at cct.lsu.edu>
http://www.perimeterinstitute.ca/personal/eschnetter/
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