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The model is able to run midday and nighttime highway assignments in parallel. The user can assign computer cores to time periods by filling the corresponding keys added to the user interface. Figure 7-1, below, shows an example of the Cube catalog (last page of user interface page) for a computer with 8 processing coreslogical processors. The AM and the PM assignments use all available cores, whereas the midday and nighttime assignments use different cores and different logical processors and can therefore run in parallel.
The model currently runs AM and PM assignments in sequence; however, it will be able to run them in parallel with minor changes in the model. In this case, the model should know which computer core is computer logical processor is the first one used for AM assignment (also which one is the first one for PM period). The interface has these two keys now and, since they are not run in parallel, the value for them should be higher than number of computer coreslogical processors. The default value, therefore, was set to 25, which is suitable for any machine with up to 24 coreslogical processors.
Figure 7-1: Assigning computer cores to highway assignments by time period
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