The runtime section is used to adjust compiler check settings and messages related to system memory and runtime related issues.
Maximum Concurrent Execution: Specify the maximum number of simulations that can be executed concurrently.
Communication Port Base Value: This value defines the base range for opening communication ports to each simulation. This value can be changed whenever multiple instances of PSCAD are running on the same machine, avoiding address contention.
Storage Notification Level: If the storage required for a simulation exceeds the selected value, a warning will be issued before the simulation is run.
Maximum Duplicates: During runtime, it is possible for messages to be sent to the output window from EMTDC every time step. Use this option to disable this form occurring. If set to None, PSCAD will only display the first message and ignore the rest. In some instances, it may be prudent to output duplicate messages, which is why this setting is available.
No output channels present: PSCAD will issue a warning message upon project run indicating that there are no Output Channels (and hence no graphical feedback).
Excessive channels present: Performs a sanity check to ensure that the user has not requested an excessive number of output channels. If the number of output channels is very large, the user should send channels on demand rather than all of them (otherwise, the simulation may perform very slowly). See the section entitled Runtime in Chapter 7 of this manual for more details.
Sample density is very high: Performs a sanity check to ensure the user has not selected a sample count that is too big for the system display and storage. This can occur when the time step is very small and the run duration is long. For example, a one second run plotted at every microsecond will have 1 million data points per trace. These are upper bound to ensure that the plot and graphs continue to function with reasonable performance. See the section entitled Runtime in Chapter 7 of this manual for more on setting simulation time step and plot step.
Waveform Overwrite: This option provides a warning dialog when a project is run, indicating that the project output file is about to be overwritten. The option to enable writing of an output file can be found under the Runtime tab in the Project Settings dialog.
Snapshot Overwrite: This option provides a warning dialog when a project is run, indicating that the project snapshot file (or files) is about to be overwritten. The option to enable writing of a snapshot file can be found under the Runtime tab in the Project Settings dialog.
Prohibit Canvas Modification: Enable this option to prevent the accidental modification on focus circuits during simulation.