To start a simulation using an xml configuration from the command line, use
the script start_run with the desired configuration. Change to the
directory that holds the Opus source code and execute:
python opus_core/tools/start_run.py -x seattle_parcel/configs/seattle_parcel.xml
-s Seattle_baseline
(typed all on one line).
Notice that the -x option takes a path to the file with the xml
configuration. Since xml configurations can hold multiple scenarios, the
scenario name must also be specified using the -s option.