Intel® Quartus® Prime Pro Edition User Guide: Scripting

ID 683432
Date 12/13/2021
Public

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3.1.29.78. set_operating_conditions (::quartus::sta)

The following table displays information for the set_operating_conditions Tcl command:

Tcl Package and Version

Belongs to ::quartus::sta

Syntax set_operating_conditions [-h | -help] [-long_help] [-force_dat] [-grade <c|i|m|e|a> ] [-model <fast|slow> ] [-speed <speed> ] [-temperature <value_in_C> ] [-voltage <value_in_mV> ] [ <list_of_operating_conditions> ]
Arguments -h | -help Short help
-long_help Long help with examples and possible return values
-force_dat Option to force delay annotation (only done when selecting an unanalyzed corner)
-grade <c|i|m|e|a> Option to specify temperature grade
-model <fast|slow> Option to specify timing model
-speed <speed> Speed grade
-temperature <value_in_C> Operating temperature
-voltage <value_in_mV> Operating voltage
<list_of_operating_conditions> list or collection of Operating conditions Tcl objects or names
Description

Use this command to specify operating conditions different from the initial conditions used to create the timing netlist. When a timing model is not specified, the slow model is used. Voltage and temperature options must be used together. These two options are not available for all devices. The get_available_operating_conditions command returns the list of available operating conditions for your device. Use the -speed option to analyze the design at a different speed grade of the selected device. Use the -grade option to analyze the design at a different temperature grade. This option is provided to support what-if analysis and is not recommended for final sign-off analysis. By default, delay annotation is skipped if previously performed. Use -force_dat to rerun delay annotation.

Example Usage
#do report timing for different operating conditions one by one
foreach_in_collection op [get_available_operating_conditions] {
	set_operating_conditions $op
	update_timing_netlist
	report_timing
}

#set aggregated report timing for all operating conditions when corner aggregation is enabled
set_operating_conditions [get_available_operating_conditions]
report_timing

#manually set operating conditions
set_operating_conditions -model fast -temperature 85 -voltage 1200
update_timing_netlist

#change device speed grade and set operating conditions
set_operating_conditions -speed 3 -model slow -temperature 0 -voltage 1100
update_timing_netlist
Return Value Code Name Code String Return
TCL_OK 0 INFO: Operation successful
TCL_ERROR 1 ERROR: Cannot set operating conditions for timing netlist created from XML file. Run create_timing_netlist.
TCL_ERROR 1 ERROR: Both the -temperature and -voltage options and their values are required.
TCL_ERROR 1 ERROR: The ability to select multiple operating conditions at once has been disabled.
TCL_ERROR 1 ERROR: Values entered did not match any valid operating conditions. Available operating conditions are: <string>
TCL_ERROR 1 ERROR: The <string> device family does not support set_operating_conditions command.
TCL_ERROR 1 ERROR: Timing netlist does not exist. Use create_timing_netlist to create a timing netlist.
TCL_ERROR 1 ERROR: Illegal value: <string>. Specify an integer ranging from -999999999 to 999999999 for the option -voltage
TCL_ERROR 1 ERROR: Unsupported option: <string>.