SLO-ECO: Single-Line-Open Aware ECO Detailed Placement and Detailed Routing Co-Optimization

This is a GitHub repository of the SLO-ECO project. The source code is forked from the OpenROAD repo, commit: 76dc13. The paper has been published in the ISQED 2024 conference, and presented in 4A.3 session.

How can I compile and run this OpenROAD-integrated binary?

• Please check the OpenROAD build manual in readthedocs#1.
• An example Tcl usage manual within OpenROAD binary is available in readthedocs#2.

Where are the SLO-ECO source codes?

• Location: src/eco/src
• Tcl commands registered to this binary (SWIG): src/eco/src/CoreEco.i
• Top-level script to run the entire flow: src/eco/scripts/run_gen_all.py

SMT2 formulations from SLO-ECO paper (See footnote 2 and 3)

• Commodity flow conservation (CFC)
• Vertex exclusiveness (VE)
• Edge assignment (EA)
• Metal segment (MS)
• Geometric variable (GV)
• Nub area rule (MAR)
• End-of-line (EOL)
• Objectives (Lexicographic Order)

Code Author (C++)

• Dr. Mingyu Woo (Reimplements whole CoRe-ECO source codes based on the OpenROAD framework)

Contributions

• Thanks to Dr. Jaehwan Kim and Prof. Andrew B. Kahng for valuable advice to proceed with this project.
• Thanks to Joong-Won Jeon and Jae-Hyun Kang for providing the detailed SLO definition.
• Thanks to previous CoRe-ECO coauthors, including Prof. C.-K. Cheng, Dr. Daeyeal Lee and Prof. Bill Lin for agreeing to open-source this SLO-ECO project.

Citations

• J.-W. Jeon, A. B. Kahng, J.-H. Kang, J. Kim and M. Woo, "SLO-ECO: Single-Line-Open Aware ECO Detailed Placement and Detailed Routing Co-Optimization", Proc. IEEE International Symposium on Quality Electronic Design (ISQED), 2024 (Link).
• C.-K. Cheng, A. B. Kahng, I. Kang, M. Kim, D. Lee, B. Lin, D. Park and M. Woo, "CoRe-ECO: Concurrent Refinement of Detailed Place-and-Route for an Efficient ECO Automation", Proc. ACM/IEEE International Conference on Computer Design (ICCD), 2021, pp. 366-373 (Link).