Intel® Quartus® Prime Pro Edition User Guide: Scripting

ID 683432
Date 10/04/2021
Public

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3.1.29.57. report_max_skew (::quartus::sta)

The following table displays information for the report_max_skew Tcl command:

Tcl Package and Version

Belongs to ::quartus::sta

Syntax report_max_skew [-h | -help] [-long_help] [-append] [-detail <summary|path_only|path_and_clock|full_path> ] [-file <name> ] [-less_than_slack <slack limit> ] [-npaths <number> ] [-panel_name <name> ] [-show_routing] [-stdout]
Arguments -h | -help Short help
-long_help Long help with examples and possible return values
-append If output is sent to a file, this option appends the result to that file. Otherwise, the file will be overwritten. This option is not supported for HTML files.
-detail <summary|path_only|path_and_clock|full_path> Option to determine how much detail should be shown in the path report
-file <name> Sends the results to an ASCII or HTML file. Depending on the extension
-less_than_slack <slack limit> Limit the paths reported to those with slack values less than the specified limit.
-npaths <number> Specifies the number of paths to report for each latest and earliest arrival skew result per set_max_skew assignment (default=1)
-panel_name <name> Sends the results to the panel and specifies the name of the new panel
-show_routing Option to display detailed routing in the path report
-stdout Send output to stdout, via messages. You only need to use this option if you have selected another output format, such as a file, and would also like to receive messages.
Description

Reports max skew analysis results for all set_max_skew commands in a single report. For each valid set_max_skew constraint, this command computes skew with respect to the latest and the earliest arrival of each path. By default, "Skew for the Latest Arrival" is computed by comparing the latest arrival of each path with the earliest arrival of the path that has the smallest value for early arrival of all other paths included in the constraint. Similarly, "Skew for the Earliest Arrival" is computed by comparing the earliest arrival of each path with the latest arrival of the path that has the largest value for late arrival of all other paths included in the constraint. No path is compared with itself. Use the -stdout option to direct the report to the Tcl console (default), the -file option to write the report to a file or the -panel_name option to direct the report to the Timing Analyzer graphical user interface. You can use these options in any combination. Use the -npaths option to limit the number of path result pairs reported for each set_max_skew constraint. If you do not specify this option, report_max_skew only reports the result pair for the single worst-case path. Use the -less_than_slack option to limit output to all paths with slack less than the specified value, up to the number specified with -npaths. Use the -detail option to specify the desired level of report detail. The -detail summary option generates a single table listing only the highlights of each path (an