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RTimothyEdwards / netgen

Netgen complete LVS tool for comparing SPICE or verilog netlists
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LVS issue when running on gf180mcu #68

Closed marwaneltoukhy closed 1 year ago

marwaneltoukhy commented 1 year ago

I'm facing an LVS issue when running on any design technology gf180mcuC. The foundry gds has an extra layer 63/63 which has text related to the cell name/version/metrics, netgen treats those as pins and produces an LVS issue. Not sure if this is a netgen issue or a magic extraction issue, if it's a magic issue, I can move this issue there.

simple design for testing: mprj_io_buffer can be found here (branch: PnR)

marwaneltoukhy commented 1 year ago

@RTimothyEdwards can't assign you as I am not a collaborator on this repo

d-m-bailey commented 1 year ago

@marwaneltoukhy Haven't run any gf LVS myself, but looking through the open_pdks commits, looks like the 63/63 problem was handled recently. Maybe the pdk you're using doesn't have the latest tech. https://github.com/RTimothyEdwards/open_pdks/commit/a519523b0d9bc913a6f87a5eed083597ed9e2e93

marwaneltoukhy commented 1 year ago

I updated to the latest version, and still seeing the same issue.

RTimothyEdwards commented 1 year ago

@marwaneltoukhy : You need to run netgen on a netlist created from a GDS that has been generated using the latest PDK version from open_pdks. Just updating the PDK from open_pdks isn't going to solve the problem if the layout being extracted has a GDS file containing cells from an earlier build of the PDK.

marwaneltoukhy commented 1 year ago

Closed with updating PDK and reharndening - new issue https://github.com/RTimothyEdwards/magic/issues/203