how to report unconstrained endpoints

[gkamendje]

I am getting the following warnings in file 5_1_fastroute.log

Warning: There is 1 unclocked register/latch pin.
Warning: There are 59 unconstrained endpoints.

I was wondering how to generate a report with the offending endpoints

[vijayank88]

In the report_checks command, use -unconstrained argument.

report_checks [-from from_list
|-rise_from from_list
|-fall_from from_list]
[-through through_list
|-rise_through through_list
|-fall_through through_list]
[-to to_list
|-rise_to to_list
|-fall_to to_list]
[-unconstrained]
[-path_delay min|min_rise|min_fall
|max|max_rise|max_fall
|min_max]
[-group_count path_count]
[-endpoint_count endpoint_path_count]
[-unique_paths_to_endpoint]
[-corner corner_name]
[-slack_max max_slack]
[-slack_min min_slack]
[-sort_by_slack]
[-path_group group_names]
[-format end|full|short|summary
|full_clock|full_clock_expanded]
[-fields fields]
[-digits digits]
[-no_line_split]
[> filename]
[>> filename]

-unconstrained Report unconstrained paths. By default unconstrained paths are not reported.

[gkamendje]

Thanks a lot

[gkamendje]

I run make gui_place to open the placed design and within the GUI I run

>>> report_checks -path_delay max -unconstrained -format end -no_line_splits
max_delay/setup group asynchronous

                                     Required  Actual
Endpoint                               Delay   Delay   Slack
------------------------------------------------------------
_491_/RD (DRQHDV0)                   7999.81    1.28 7998.53 (MET)

max_delay/setup group sys_clk

                                     Required  Actual
Endpoint                               Delay   Delay   Slack
------------------------------------------------------------
_542_/D (DRNQHDV0)                   7999.74    3.90 7995.84 (MET)

>>> report_checks -path_delay min -unconstrained -format end -no_line_splits
min_delay/hold group asynchronous

                                     Required  Actual
Endpoint                               Delay   Delay   Slack
------------------------------------------------------------
_490_/SDN (DSNQHDV0)                    0.14    0.77    0.63 (MET)

min_delay/hold group sys_clk

                                     Required  Actual
Endpoint                               Delay   Delay   Slack
------------------------------------------------------------
_496_/D (DRQHDV0)                      -0.06    0.54    0.59 (MET)

Which is quite strange since no unconstrained path is reported. Is there something I am missing here?

[vvbandeira]

@gkamendje I think what you are actually looking for is:

check_setup -unconstrained_endpoints -verbose

Without the -verbose, it shows the count, with the flag it shows all the offending endpoints.

[gkamendje]

Thanks thats exactly what I was looking for