Enable PL_ROUTABILITY_DRIVEN and PL_TIME_DRIVEN (The-OpenROAD-Project…

…#1092)

ORFS enables both of these by default.

configuration/README.md

@@ -114,13 +114,13 @@ These variables worked initially, but they were too sky130 specific and will be
 | Variable      | Description                                                   |
 |---------------|---------------------------------------------------------------|
 | `PL_TARGET_DENSITY` | The desired placement density of cells. It reflects how spread the cells would be on the core area. 1 = closely dense. 0 = widely spread <br> (Default: `0.55`)|
-| `PL_TIME_DRIVEN` | Specifies whether the placer should use time driven placement. 0 = false, 1 = true <br> (Default: `0`)|
+| `PL_TIME_DRIVEN` | Specifies whether the placer should use time driven placement. 0 = false, 1 = true <br> (Default: `1`)|
 | `PL_LIB` | Specifies the library for time driven placement <br> (Default: `LIB_TYPICAL`)|
 | `PL_BASIC_PLACEMENT` | Specifies whether the placer should run basic placement or not (by running initial placement, increasing the minimum overflow to 0.9, and limiting the number of iterations to 20). 0 = false, 1 = true <br> (Default: `0`) |
 | `PL_SKIP_INITIAL_PLACEMENT` | Specifies whether the placer should run initial placement or not. 0 = false, 1 = true <br> (Default: `0`) |
 | `PL_RANDOM_GLB_PLACEMENT` | Specifies whether the placer should run random placement or not. This is useful if the design is tiny (less than 100 cells). 0 = false, 1 = true <br> (Default: `0`) |
 | `PL_RANDOM_INITIAL_PLACEMENT` | Specifies whether the placer should run random placement or not followed by replace's initial placement. This is useful if the design is tiny (less than 100 cells). 0 = false, 1 = true <br> (Default: `0`) |
-| `PL_ROUTABILITY_DRIVEN` | Specifies whether the placer should use routability driven placement. 0 = false, 1 = true <br> (Default: `0`) |
+| `PL_ROUTABILITY_DRIVEN` | Specifies whether the placer should use routability driven placement. 0 = false, 1 = true <br> (Default: `1`) |
 | `PL_RESIZER_DESIGN_OPTIMIZATIONS` | Specifies whether resizer design optimizations should be performed or not. 0 = false, 1 = true <br> (Default: `1`) |
 | `PL_RESIZER_TIMING_OPTIMIZATIONS` | Specifies whether resizer timing optimizations should be performed or not. 0 = false, 1 = true <br> (Default: `1`) |
 | `PL_RESIZER_MAX_WIRE_LENGTH` | Specifies the maximum wire length cap used by resizer to insert buffers. If set to 0, no buffers will be inserted. Value in microns. <br> (Default: `0`)|

configuration/placement.tcl

@@ -14,8 +14,8 @@
 
 # Placement defaults
 set ::env(PL_TARGET_DENSITY) 0.55
-set ::env(PL_ROUTABILITY_DRIVEN) 0
-set ::env(PL_TIME_DRIVEN) 0
+set ::env(PL_ROUTABILITY_DRIVEN) 1
+set ::env(PL_TIME_DRIVEN) 1
 set ::env(PL_RANDOM_GLB_PLACEMENT) 0
 set ::env(PL_BASIC_PLACEMENT) 0
 set ::env(PL_SKIP_INITIAL_PLACEMENT) 0
@@ -39,4 +39,4 @@ set ::env(PL_RESIZER_REPAIR_TIE_FANOUT) 1
 set ::env(PL_MAX_DISPLACEMENT_X) 500
 set ::env(PL_MAX_DISPLACEMENT_Y) 100
 set ::env(PL_MACRO_HALO) {0 0}
-set ::env(PL_MACRO_CHANNEL) {0 0}
+set ::env(PL_MACRO_CHANNEL) {0 0}