Trying to solve the issue of no taps found for a new digital flow. Any help greatly appreciated.

[prapurna443]

I am trying to implement a PDK from Tower jazz I have access to. In the routing portion I am having trouble to get past the no taps found issue. I tried reducing the density of the placement, which isn't working. To my knowledge everything seem to correctly on grid etc. I am not sure how to move forward from here. Does changing the offset in the technology LEF file helps ?? ( I did try completely commenting out the offset numbers in LEF file , didn't help ) . I am assuming that standard cell developers would have come up with those numbers based of the layouts so trial and error from my part wouldn't make sense.

Another problem I am facing is my project_var.sh keep getting overwritten, but according to the documentation it shouldn't be overwritten if it already exists, not sure why its happening.

Anyone get past similar issue or any advice with respect to how to provide more inputs to Graywolf and Qrouter would be greatly appreciated.

With regards,
Viswa.

[Multimuffin]

Hi, I was wondering if you've figured out what the problem was. I am having the exact same problems as you are describing with the same technology. I've been trying to change some parameters of various files to reduce the amount of failed nets, but could not succeed.