open-source-silicon.dev

Has anyone ever encountered the error: *[ERROR PDN-0165] Conflict found, instance dram_inst is part of two grid definitions (CORE_macro_grid_2, CORE_macro_grid_1).* ? If so, I am having trouble to understand how exactly to approach debugging this issue. Does anyone have any tips?

File a github issue here with issue_reproducible generated by flow: <https://github.com/The-OpenROAD-Project/OpenLane/issues>

If its a MPW design mean, share your repo link

Hey Vijayan, Thanks for the suggestion. However, I just found a git issue from <@U0172QZ342D> that has a similar issue. It seems like I could have the same issue, so I will refrain from posting a possibly duplicate issue, for now.

<https://github.com/The-OpenROAD-Project/OpenLane/issues/1076>

yes, need to check config.tcl. As that issue already closed. Can you create new issue with test case?

Ok, i just though of one possible problem. I think i didn't put an exclusion zone for power routing across dram inst. This might be a problem, right? I'll try to fix this, and if it doesn't work I'll post an issue.

It didn't work. I am creating an issue right now.

I have the same issue, commenting the FP_PDN_MACRO_HOOKS allows the flow to continue. But we should check whether the macros are connected. Are there any report for unconnected instances?

I've posted this issue now: <https://github.com/The-OpenROAD-Project/OpenLane/issues/1102>

<@U037VCZ1XL4>  This does indeed fix this problem, however I am not sure if this is the correct way of addressing it. I've opened up another issue here: <https://github.com/The-OpenROAD-Project/OpenLane/issues/1104>

If anyone didn't see the git issue. This can be fixed by updating the openlane version.