| # Using deltaDebug.py to whittle down detailed routing example |
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| Tool: Detailed Routing |
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| Subcategory: Detailed routing issue |
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| ## Conversation |
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| ### 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.
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| Normally, deltaDebug.py needs an error message to look for to do it's bisection.
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| 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.
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| Tips? |
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| ### maliberty |
| Can you use --use_stdout & --error_string to check the final drcs? |
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| ### 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. |
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| ### oharboe |
| Various bugs have been fixed and improvements made to deltaDebug.py since this post. |
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