Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Yes, by default OpenStudio adds these two output variables. It's actually because of the standard reporting measure. To produce the tables of zone conditions where you see number of hours in humidity range and temperature range for each zone, it needs to request this output.
And yes, it can slow down your runtime quite significantly. While the reporting measure is really nice, if you're just debugging or going through an iteration to calibrate or something, then I suggest you turn it off and wait until you're satisfied to enable it back again.
Currently there's no proper way to turn off the reporting measure but I've posted a hack that works here
As far as other things to cut simulation time, the obvious places to look for at the timestep value (defaults to 6, but 4 can be plenty no?), the solar distribution, the convergence limits, etc.
Also, if you're doing an annual simulation, make sure you turn off "Run for sizing periods". I've noticed that people get confused by this, they think turning it off will result in a failure of sizing. What it means is whether or not it'll run the simulation and report the variables. If you have 7 design days, that means 7 more runperiods in your SQL file, also means 7 warmup periods more... That takes a lot of time.
