Hello, I'm checking my design with Klayout DRC. Ma...
# openlaney
Yunus Emre ERYILMAZ
04/20/2023, 1:01 PMHello, I'm checking my design with Klayout DRC. Magic was printing
drc.rptm
Matt Venn
04/20/2023, 1:06 PMyes
✅ 1
y
Yunus Emre ERYILMAZ
04/20/2023, 1:17 PMI've run both Klayout and Magic DRC, and runtime of Klayout was shorter than Magic. Why Klayout runs faster than Magic?
m
Matt Venn
04/20/2023, 1:18 PMgood question
Matt Venn
04/20/2023, 1:18 PMmy guess is that magic is doing more checks than klayout
Matt Venn
04/20/2023, 1:19 PMas klayout DRC is done with python, so it would probably be slower if it was doing the same depth of checks
y
Yunus Emre ERYILMAZ
04/20/2023, 1:49 PMNow, I've run SKY130 DRC runset in standalone Klayout with the same GDS and it takes longer from the one in OpenLane flow but it is near to Magic flow. For comparsion, standalone Klayout > Magic DRC > OpenLane Klayout. Are the omitted checks unimportant or something else?
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Matt Venn
04/20/2023, 2:21 PMmaybe @Tim Edwards can answer when he gets back from DATE / OSDA
t
Tim Edwards
04/20/2023, 2:22 PM@Matt Venn: I'm already back.
👋 2
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Yunus Emre ERYILMAZ
04/28/2023, 8:07 PMI think there's wrong about Klayout flow, it prints nothing meaningful about design rule violations. I have GDS which could not pass Magic DRC but the same one does not produce any output in Klayout DRC. Only "DRC section
Writing report database:" section is printed in terminal.
Yunus Emre ERYILMAZ
04/28/2023, 8:35 PMThis is the printed database file, I think it does not produce any meaningful data about DRC. It looks empty.
<?xml version="1.0" encoding="utf-8"?><report-database><description>SKY130 DRC runset</description><original-file/><generator>drc: script='/openlane/sky130A/libs.tech/klayout/drc/sky130A_mr.drc'</generator><top-cell>top</top-cell><tags></tags><categories></categories><cells><cell><name>top</name><variant/><references></references></cell></cells><items></items></report-database>24 Views