Project Meeting 2016.05.06 - ActivitySim/activitysim GitHub Wiki

Skim handling suitable for large set of skims

Ability to pre-load / cache all required skims now works and is checked-in to the master branch
Pre-stacking (building a 3D array of skims from a list of 2D skims by time period) in order to save significant runtime and memory usage is checked-in as branch stack-injectable
When solving the MNL model, the table of choosers is merged with the number of alternatives being considered and this can require too much RAM. We added chunking within the MNL model and will try a full model run again. This is being discussed here and is branch chunked-interaction_simulate

Divide by zero in the density calculations bug fixed for now
Overloading of square bracket operator for skim referencing fixed for now. We may eventually want to revise the usage of square bracket in expressions in order to make usage of them within the code more Python like.

Bill has last invoice from RSG and will share with the partners
Task 2 major deliverables are complete but will leave task open until after SANDAG's review of the Getting Started materials
Jeff added feature requests for logging and restarting
Team agreed to go ahead and implement logging since it will be helpful for working through the various issues we've encountered; this is the start of Task 9 tracing
Continue to work through issues that arise and keep track of architecture design issues for a group discussion later this year

Run full model with chucking and report memory usage, runtimes, etc. if successful
Work on any issues we encounter
Implement logging