My design is stuck at global routing with the erro...
# openlanen
Nguyen Dao
06/17/2021, 10:00 PMMy design is stuck at global routing with the error msg “Net xxx not properly covered”. Can anyone explain what does it mean and know how to fix it? Thanks
m
Matthew Guthaus
06/17/2021, 10:15 PMThat sounds like it might be a pin error and the router can't access it
Matthew Guthaus
06/17/2021, 10:16 PMIs that on a macro?
Matthew Guthaus
06/17/2021, 10:16 PMHow big are your pins?
Matthew Guthaus
06/17/2021, 10:16 PMFor the SRAM macros, I had to put them on the perimeter and make them several tracks wide
n
Nguyen Dao
06/17/2021, 10:28 PMYes, the pin is quite small (0.17x0.33)
Nguyen Dao
06/17/2021, 10:32 PMWe’re doing for a FPGA fabric and seems the tool can handle it for a small one (2x3 blocks) but got stuck when we scale it up?
Nguyen Dao
06/17/2021, 10:41 PM@Matthew Guthaus is there any options in openlane can help? Or if we need to re-implement the macros, do you have any suggestions for the minimum pinDepth and pinWidth? Thanks
m
Matthew Guthaus
06/17/2021, 10:43 PM@Nguyen Dao If that's the case, you need to reimplement the macro. I used 0.38 x 0.72 wide on met3 and met4. The 0.72 is just for min area if they are disconnected.
🙌 2
m
Matt Liberty
06/21/2021, 2:49 PMIf you can provide a test case you can file an issue at https://github.com/The-OpenROAD-Project/OpenROAD/issues
Matt Liberty
06/21/2021, 2:50 PMIt suggests that the global router is not properly generating a route for that net for unknown reasons