OpenROAD/src/mpl/doc/debugMessages.md

MPL2 Debug Messages

MPL2 debug messages are divided in:

• 5 groups according to HierRTLMP flow stages.
• 1 group for a post-process stage responsible for pushing the macros to the boundaries if possible.

Groups

Multilevel Autoclustering

• Group Name: multilevel_autoclustering
• Levels:

1. Overall steps of the stage.
2. Include in logs:
   • Macro signatures;
   • Connections of candidate clusters to be merged.

Coarse Shaping

• Group Name: coarse_shaping
• Levels:

1. Overall steps of the stage;
2. Log clusters' tilings.

Fine Shaping

• Group Name: fine_shaping
• Levels:

1. Overall steps of the stage;
2. Details of the shapes of each cluster's children.

Hierarchical Macro Placement

• Group Name: hierarchical_macro_placement
• Levels:

1. Summary with the final costs of each penalty for cluster/macro placement.
2. Include locations chosen for each child/macro.
3. Include, before the summary, a list with the connections between clusters.

Orientation Improvement

• Group Name: flipping
• Levels:

1. Print the wire length before and after flipping

Boundary Push

• Group Name: boundary_push
• Levels:

1. Print name of the macro cluster currently being pushed, its distance to the close boundaries and a message if the move was not possible due to overlap.