Place and Route Options

You can find additional place and route options for the efx_run script with the efx_pnr --help option.

efx_pnr[.exe] --help

Note: Do not run the efx_pnr application on its own. Use the place and route options with the efx_run script and the --pnr_opts option.

Table 1. Place and Route Primary Options
Option	Input	Description
--help	None	Show basic efx_pnr options.
--help-verbose	None	Show extended efx_pnr options.
--prj	Filename	Efinity project XML file name.
--family	Family name	Specifies the device family.
--device	Device name	Specifies the device name.
--circuit	Circuit name	Specifies the circuit name.
--settings_file	Filename	Specifies a settings file to be used instead of listing options into the command-line interface.
--verbose	None	Generate verbose details message output.
--route	None	Run router.
--place	None	Run placer.
--global_place	None	Run global placement.
--detail_place	None	Run detailed placement.
--pack	None	Run packer.

Table 2. Place and Route General Options
Option	Input	Description
--max_threads	Number	Maximum number of threads allowed.
--work_dir	File path	Specifies the Efinity working directory path.
--output_dir	File path	Specifies the Efinity output directory path.
--sdc_file	Filename	Timing constraints file.
--sync_file	Filename	Interface synchronization file (.csv).
--print_critical_path	Number	Number of critical paths to display.
--operating_conditions	Operating conditions name	Set operating conditions name to be used when performing timing analysis.
--suppress_info_msgs	off, on	Suppress INFO messages from place and route. Default: off
--suppress_warning_msgs	off, on	Suppress WARNING messages from place and route. Default: off
--msg_suppression_list	Filename	File to suppress specific INFO/WARNING messages from place and route by message IDs.

Table 3. Placement Options
Option	Input	Description
--seed	Number	Initial placement seed value.

Table 4. Route Options
Option	Input	Description
--beneficial_skew	on, off	Enable clock-skew optimizations for Titanium family devices.
--max_router_iterations	Number	Maximum allowed router iterations.
--load_route	None	Loud existing route file.

Table 5. Packing Options
Option	Input	Description
--physical_packing	None	Perform DSP cell packing based on early placement results. This may result in better quality of results at the cost of increased runtime during the packing stage. This option is in beta in the Efinity software version 2025.2.

Using pnr_opts

efx_run.py helloworld.xml --flow pnr --pnr_opts verbose