Version 0.8.2 released

New features

  • allow loading globals from csv files directly, instead of having them in the input HDF file. One can mix both approaches (have some globals in the “input” HDF file while other globals in .csv files). This makes it more practical in case you have a relatively stable input dataset for entities, but need to change the globals often, or have several variants with different globals. See the globals section for details. This closes issue 30.
  • added a new simulation option category: “logging”. This is the new home for the existing “timings” option, and for a new “level” option, which allows to sets the verbosity of logging to one of periods, procedures (this is the default) or processes (which corresponds to the behavior in earlier versions).

Miscellaneous improvements

  • decreased memory usage for models with many periods. It used to keep the index of individuals of past periods forever in memory, which had approximately the same effect than adding one column for each period. Since it is only useful when going back in time more than one period, it now flushes it to disk for periods < period - 1. This change has two consequences: it will decrease memory use for models with many periods but will slow down models going back in time more than one period. This closes issue 130.
  • the “top times” at the end of the simulation now also include the % of total.
  • after each period, a very rough estimate of the remaining time for the simulation is displayed (closes issue 127 in combination with the logging/level option).
  • updated all dependencies provided in the bundle.
  • improved the release script.


  • Using links or other “non-simple” variables in the score expression of the matching() function was a lot slower and memory-hungry than necessary because some “system temporary variables” kept accumulating. It is still a lot slower than it should though, see issue 128.