Answers Database
PPR 5.2.x: Relaxing PPR timespecs in xactinit.dat
Record #1980
Problem Title:
PPR 5.2.x: Relaxing PPR timespecs in xactinit.dat
Problem Description:
If even a few nets do not meet timespec, PPR under default settings will relax timespecs on all net
s to a maximum value.
This can be avoided by making the following additions to the xactinit.dat file.
Solution 1:
Minimal additions:
placer_4k_pa_goal_ratio = 1.0
pa_init_goal = 1.00
Other common additions to xactinit.dat:
placer_4k_pa_goal_ratio = 1.0
pa_init_goal = 1.00
loop_report_max = L
/ppr/report_paths = true
pa_pins_to_show = 6
pa_paths_to_show = 5
/ppr/placer_effort = 4
/ppr/router_effort = 4
/ppr/path_timing = true
/ppr/timing = forced_on
/*/*/plog_file_level = verbose
/*/plog_file_level = verbose
/*/*/plog_stdout_level = verbose
/*/plog_stdout_level = verbose
End of Record #1980 - Last Modified: 10/27/97 15:52 |
