Hi Does anyone know how to resolve this issue that says `uti

Question

Hi Does anyone know how to resolve this issue that says `utilization exceeds 100 ` when running flow tcl design lt my project gt I saw some similar questions in this channel but I couldn t find an answer I tried setting the `DIE AREA` parameter in config tcl to several large values but this didn t fix the issue Is there a different parameter I need to change Image of my terminal output in the comments

Vienna S. · Answer

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Matt Venn · Answer

Die area is dependent on another parameter I think you have to also turn on absolute size Otherwise you can play with the density settings

Vienna S. · Answer

Ah I see that `FP SIZING` parameter now thanks

Vienna S. · Answer

What is the default maximum core area I tried setting the `PL TARGET DENSITY` to 1 high density and left `FP SIZING` on relative but still ran out of room

Matt Venn · Answer

check this <https github com efabless openlane wiki how to add a small design>

Matt Venn · Answer

last faq is about core util and target density

Matt Venn · Answer

I would probably just copy the config from one of the openlane examples

Vienna S. · Answer

Thank you so much I ll check this out

Matt Venn · Answer

also check out run designs py you can give it a range of values and it will iterate them all and give you the results in a spreadsheet

Vienna S. · Answer

Oh cool thanks I see that on github I ll give that a try for parameter sweeping

Vienna S. · Answer

Thank you Matt this FAQ about How to add a small design at the top of the page you linked seems to have fixed my issue when I use those recommended `FP CORE UTIL` and `PL TARGET DENSITY` parameters I had thought the design was too big but that doesn t seem to be the case I got a viable design at least for now and may try a parameter sweep also

Matt Venn · Answer

the tools work with the default config for a certain size of design I would guess your design is on the small size so you have to adjust those parameters

Vienna S. · Answer

Ah that makes sense Thanks