What is Written to Cache

During a simulation, UrbanSim writes a variety of data to the simulation cache. These include:

• Any dataset attribute read into memory or computed during the year.
• A log file for each year, containing anything written to the UrbanSim logger.
• A log file for the top-level process that runs each year of the simulation.
• Meta-data about the information in the simulation cache, such as the ``version'' of each variable so that we only need to recompute variables when their inputs change.

You can adjust the frequence with which the simulation flushes dataset attribute values to the simulation cache:

• After computing each year. This is always done.
• After computing each model. Set 'datasets_to_cache_after_each_model' in the run configuration to a list of dataset names you wish to cache. An empty list (default) causes no caching.
• After computing each variable. Set 'flush_variables' to True in the run configuration.