| # Using deltaDebug.py to whittle down detailed routing example | |
| Tool: Detailed Routing | |
| Subcategory: Detailed routing issue | |
| ## Conversation | |
| ### oharboe | |
| I have some violations that detailed routing isn't able to deal with, that I really think it should be able to deal with. | |
| Normally, deltaDebug.py needs an error message to look for to do it's bisection. | |
| However, a detailed route can succeed after 64 iterations, even if all violations are not sorted out, so there's no error message for deltaDebug.py to use for it's bisection. | |
| Tips? | |
| ### maliberty | |
| Can you use --use_stdout & --error_string to check the final drcs? | |
| ### maliberty | |
| You could make a temporary change to scripts/detail_route.tcl to call detailed_route_num_drvs and issue an error message if >0. Then you could delta on that. | |
| ### oharboe | |
| Various bugs have been fixed and improvements made to deltaDebug.py since this post. | |