sim_time_unit

sim_time_unit is the time unit, in binary microseconds of the .time tag in the eventlist structure. The default value is 1. It is a good idea to set both sim_time_unit and time_unit to the same value for all simulations. Note that for simulations longer than 2048.0 seconds, a larger value of sim_time_unit is needed. If the time range passed in is lnger that 2048.0 seconds, then the time_unit will be increased to 16.