Merge pull request #8400 from eder-matheus/grt_cugr_adjustment

grt: apply user-defined adjustments into CUGR flow

Author: eder-matheus

src/grt/src/cugr/src/GridGraph.cpp

@@ -228,6 +228,18 @@ GridGraph::GridGraph(const Design* design,
       }
     }
   }
+
+  // Apply user-defined capacity adjustment
+  for (int layer_index = 0; layer_index < num_layers_; layer_index++) {
+    const float adjustment = design->getLayer(layer_index).getAdjustment();
+    if (adjustment != 0.0) {
+      for (size_t x = 0; x < x_size_; x++) {
+        for (size_t y = 0; y < y_size_; y++) {
+          graph_edges_[layer_index][x][y].capacity *= (1.0 - adjustment);
+        }
+      }
+    }
+  }
 }
 
 IntervalT GridGraph::rangeSearchGridlines(const int dimension,

src/grt/src/cugr/src/Layers.cpp

@@ -79,6 +79,8 @@ MetalLayer::MetalLayer(odb::dbTechLayer* tech_layer,
       max_eol_within_ = std::max(max_eol_within_, static_cast<int>(eol_within));
     }
   }
+
+  adjustment_ = tech_layer->getLayerAdjustment();
 }
 
 int MetalLayer::getTrackLocation(const int track_index) const

src/grt/src/cugr/src/Layers.h

@@ -17,6 +17,7 @@ class MetalLayer
   MetalLayer(odb::dbTechLayer* tech_layer, odb::dbTrackGrid* track_grid);
 
   std::string getName() const { return name_; }
+  int getIndex() const { return index_; }
   int getDirection() const { return direction_; }
   int getWidth() const { return width_; }
   int getPitch() const { return pitch_; }
@@ -29,6 +30,8 @@ class MetalLayer
   int getDefaultSpacing() const { return default_spacing_; }
   int getParallelSpacing(int width, int length = 0) const;
   int getMaxEolSpacing() const { return max_eol_spacing_; }
+  float getAdjustment() const { return adjustment_; }
+  void setAdjustment(float adjustment) { adjustment_ = adjustment; }
 
  private:
   std::string name_;
@@ -58,6 +61,9 @@ class MetalLayer
   int max_eol_width_ = 0;
   int max_eol_within_ = 0;
 
+  // User-defined capacity adjustment
+  float adjustment_ = 0.0;
+
   // Corner spacing
 };
 

src/grt/test/BUILD

@@ -4,6 +4,7 @@ TESTS = [
     "bus_route",
     "clock_route",
     "clock_route_cugr",
+    "clock_route_cugr2",
     "clock_route_alpha",
     "clock_route_error1",
     "clock_route_error2",
@@ -15,11 +16,15 @@ TESTS = [
     "congestion6",
     "congestion7",
     "critical_nets_percentage",
+    "cugr_adjustment1",
+    "cugr_adjustment2",
+    "cugr_adjustment3",
     "est_rc1",
     "est_rc2",
     "est_rc3",
     "est_rc4",
     "gcd",
+    "gcd_cugr",
     "gcd_flute",
     "inst_pin_out_of_die",
     "invalid_pin_placement",

src/grt/test/CMakeLists.txt

@@ -4,6 +4,7 @@ or_integration_tests(
     bus_route
     clock_route
     clock_route_cugr
+    clock_route_cugr2
     clock_route_alpha
     clock_route_error1
     clock_route_error2
@@ -15,11 +16,15 @@ or_integration_tests(
     congestion6
     congestion7
     critical_nets_percentage
+    cugr_adjustment1
+    cugr_adjustment2
+    cugr_adjustment3
     est_rc1
     est_rc2
     est_rc3
     est_rc4
     gcd
+    gcd_cugr
     gcd_flute
     inst_pin_out_of_die
     invalid_pin_placement

src/grt/test/clock_route_cugr.ok

@@ -6,7 +6,7 @@
 [INFO ODB-0133]     Created 15 nets and 72 connections.
 [INFO GRT-0020] Min routing layer: met1
 [INFO GRT-0021] Max routing layer: met5
-[INFO GRT-0022] Global adjustment: 50%
+[INFO GRT-0022] Global adjustment: 0%
 [INFO GRT-0023] Grid origin: (0, 0)
 [INFO GRT-0088] Layer li1     Track-Pitch = 0.4800  line-2-Via Pitch: 0.3400
 [INFO GRT-0088] Layer met1    Track-Pitch = 0.3700  line-2-Via Pitch: 0.3400

src/grt/test/clock_route_cugr.tcl

@@ -12,10 +12,6 @@ set_propagated_clock [get_clocks {core_clock}]
 
 set guide_file [make_result_file clock_route_cugr.guide]
 
-set_global_routing_layer_adjustment met1 0.8
-set_global_routing_layer_adjustment met2 0.7
-set_global_routing_layer_adjustment * 0.5
-
 set_routing_layers -signal met1-met5 -clock met3-met5
 
 global_route -verbose -use_cugr