gpl: include default overflow threshold values in gpl script

gudeh · gudeh · commit 299deca04d4c · 2024-07-01T20:32:02.000-03:00
this should provide easier access for user to modify values

Signed-off-by: Augusto Berndt &lt;gudehh@gmail.com&gt;
diff --git a/flow/scripts/global_place.tcl b/flow/scripts/global_place.tcl
@@ -29,15 +29,22 @@ if {[info exist ::env(PLACE_DENSITY_LB_ADDON)]} {
 }
 
 set global_placement_args {}
+
+# Parameters for routability mode in global placement
 if {$::env(GPL_ROUTABILITY_DRIVEN)} {
   lappend global_placement_args {-routability_driven}
     if { [info exists ::env(GPL_TARGET_RC)] } { 
       lappend global_placement_args {-routability_target_rc_metric} $::env(GPL_TARGET_RC)
   }
 }
 
+# Parameters for timing driven mode in global placement
 if {$::env(GPL_TIMING_DRIVEN)} {
   lappend global_placement_args {-timing_driven}
+  
+  # Timing-driven iterations will trigger with these overflow values
+  set reweight_overflow {79 64 49 29 21 15}
+  lappend global_placement_args {-timing_driven_net_reweight_overflow} $reweight_overflow
 }
 
 proc do_placement {place_density global_placement_args} {

Original file line number	Diff line number	Diff line change
`@@ -29,15 +29,22 @@ if {[info exist ::env(PLACE_DENSITY_LB_ADDON)]} {`
`29`	`29`	`}`
`30`	`30`
`31`	`31`	`set global_placement_args {}`
	`32`	`+`
	`33`	`+# Parameters for routability mode in global placement`
`32`	`34`	`if {$::env(GPL_ROUTABILITY_DRIVEN)} {`
`33`	`35`	`lappend global_placement_args {-routability_driven}`
`34`	`36`	`if { [info exists ::env(GPL_TARGET_RC)] } {`
`35`	`37`	`lappend global_placement_args {-routability_target_rc_metric} $::env(GPL_TARGET_RC)`
`36`	`38`	`}`
`37`	`39`	`}`
`38`	`40`
	`41`	`+# Parameters for timing driven mode in global placement`
`39`	`42`	`if {$::env(GPL_TIMING_DRIVEN)} {`
`40`	`43`	`lappend global_placement_args {-timing_driven}`
	`44`	`+`
	`45`	`+ # Timing-driven iterations will trigger with these overflow values`
	`46`	`+ set reweight_overflow {79 64 49 29 21 15}`
	`47`	`+ lappend global_placement_args {-timing_driven_net_reweight_overflow} $reweight_overflow`
`41`	`48`	`}`
`42`	`49`
`43`	`50`	`proc do_placement {place_density global_placement_args} {`