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Hello! Does anyone know what might cause this error `ePlAce diverged at initial iteration`? I see the <https://github.com/The-OpenROAD-Project/RePlAce|github repo> about the RePlAce tool, but I'm not sure what causes an error in this step of the openlane placement process. (Error screenshot in comments)

openlane_adc_replace_diverged.png

The message has been updated to "Re-run with a smaller init_density_penalty value".  The default value is 0.00008

Is this a very small design?  I've seen it happen sometimes in that case.  If you can share the design you can file an issue at <https://github.com/The-OpenROAD-Project/OpenROAD/issues>

Thanks for your advice! I tried setting `INIT_DENSITY_PENALTY` to the minimum value 1e-6, but the error still persists. It is a pretty small design, and I used the same config parameters I've used for small designs in the past (from this page <https://github.com/efabless/openlane/wiki#how-to-add-a-small-design>)

If tuning a few more parameters doesn't work I'll file an issue!

Like this? `./flow.tcl -design digADC -skip_initial_place`

I think the control in openlane is PL_SKIP_INITIAL_PLACEMENT

<https://github.com/efabless/openlane/blob/master/configuration/README.md>

Oh thank you I see! I'd just seen the doc about skip_initial_place on the openroad page

Hmm I tried setting `PL_SKIP_INITIAL_PLACEMENT` to 1 (instead of the default 0) and that didn't fix it

Can you put the design in a github issue and I can take a look?

Hi <@U018LA3KZCJ>, sorry for the late reply! I took a break at the end of the semester to travel home. If you're still willing to take a look at this, I just opened an issue here <https://github.com/The-OpenROAD-Project/OpenROAD/issues/703>