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The-OpenROAD-Project / OpenROAD

OpenROAD's unified application implementing an RTL-to-GDS Flow. Documentation at https://openroad.readthedocs.io/en/latest/
https://theopenroadproject.org/
BSD 3-Clause "New" or "Revised" License
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Multiple port issue in OpenDB #2091

Closed Yupjun closed 2 years ago

Yupjun commented 2 years ago

Hi, it seems like OpenDB can't parse multiple ports. I'm currently using real Foundary PDK and this design contains a lot of multiple ports. I got an error (DEFPARS-6010) while processing my DEF file. Are there any options that I can do?

maliberty commented 2 years ago

Do you get any other messages? Can you reduce this to a minimal test case that you can make public (you don't need to make the LEF public, just a reduced DEF since it is a port issue).

Yupjun commented 2 years ago

Before I share my content, sorry I'm a super newbie in this physical design area.

multiple ports of DEF file looks like this.

- VSS + NET VSS + SPECIAL +DIRECTION INOUT + USE GROUND
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (5600 0) N
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (5600 1490400 ) S
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (9930 0 ) N
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (9930 1490400 ) S
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (14250 0 ) N
 + PORT 
     +LAYER D6 ( -188 0 ) (188 376 )
     +FIXED (14250 1490400 ) S

... and so on. I'm not sure why the Innovus tool exports the DEF file like this. Again, sorry for my lack of knowledge about VLSI physical design.