Merge branch 'main' of github.com:TILOS-AI-Institute/MacroPlacement into flow_scripts

Flows/NanGate45/ariane133/README.md

@@ -2,28 +2,28 @@ We implement [Ariane design with 133 macros](../../../Testcases/ariane133) on th
 
 
 ## *Macro Placement Generated by Cadence Flow-1*
-The screenshot of the design using Cadence Flow-1 on Nangate45 enablement is shown below   
+The screenshot of the design using Cadence Flow-1 on Nangate45 enablement is shown below.   
 <img src="./screenshots/Ariane133_Innovus.png" alt="ariane133_cadence" width="400"/>  
   
 ## *Macro Placement Generated by ORFS*
-The screenshot of the design using ORFS on Nangate45 enablement is shown below  
+The screenshot of the design using ORFS on Nangate45 enablement is shown below.  
 <img src="./screenshots/Ariane133_ORFS.png" alt="ariane136_orfs" width="400"/>
 
 ## *Baseline Macro Placement Generated by Human*
-The screenshot of the design using Cadence tool for standard cell placement and routing on Nangate45 enablement is shown below   
+The screenshot of the design using the Cadence Innovus tool for standard-cell placement and routing on Nangate45 enablement is shown below.   
 <img src="./screenshots/manual_ariane133_Innovus.png" alt="ariane133_cadence" width="400"/>  
 The manual macro placement is provided in [manual_floorplan.def](https://github.com/TILOS-AI-Institute/MacroPlacement/blob/main/Flows/NanGate45/ariane133/def/manual_floorplan.def).
 We generate the manual macro placement in two steps:  
-(1) we call the [gridding](https://github.com/TILOS-AI-Institute/MacroPlacement/tree/main/CodeElements/Gridding) scripts to generate grid cells (27 x 27 in our case); (2) we manually place macros on the center of grid cells.
+(1) we call the [gridding](https://github.com/TILOS-AI-Institute/MacroPlacement/tree/main/CodeElements/Gridding) scripts to generate grid cells (in this case, we end up with a 27 x 27 grid); (2) we manually place macros so that their centers lie on centers of grid cells, with no overlap between macros or overflow of macros beyond the layout canvas.
 
-The macro placement can be a competitive baseline for [Circuit Training](https://github.com/google-research/circuit_training).
-The metrics after different physical design stages are shown below. 
+Note that this human-constructed macro placement can be a competitive baseline for [Circuit Training](https://github.com/google-research/circuit_training).
+The metrics reported by the Innovus tool after different physical design stages are shown below. 
 Note that (1) we set the activity factor to 0.2 in our flow; (2) the standard cell area does not include physical cells; (3) In order to match [Nature paper](https://www.nature.com/articles/s41586-021-03544-w), we adjust the pin positions to occupy about 60% of the left boundary. 
 
 <table class="tg">
 <thead>
   <tr>
-    <th class="tg-0lax">Stage in Physcial Design</th>
+    <th class="tg-0lax">Stage in Physical Design</th>
     <th class="tg-0lax">Core Area (um^2)</th>
     <th class="tg-0lax">Standard Cell Area (um^2)</th>
     <th class="tg-0lax">Total Power (mW)</th>