Hello I m checking my design with Klayout DRC Magic was prin

Question

Hello I m checking my design with Klayout DRC Magic was printing `drc rpt` file for DRC errors However I could not find a similar report for Klayout DRC My design completes the flow successfully does that mean I don t have any design rule errors Thank you

Matt Venn · Answer

yes

Yunus Emre ERYILMAZ · Answer

I ve run both Klayout and Magic DRC and runtime of Klayout was shorter than Magic Why Klayout runs faster than Magic

Matt Venn · Answer

good question

Matt Venn · Answer

my guess is that magic is doing more checks than klayout

Matt Venn · Answer

as klayout DRC is done with python so it would probably be slower if it was doing the same depth of checks

Yunus Emre ERYILMAZ · Answer

Now 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 gt Magic DRC gt OpenLane Klayout Are the omitted checks unimportant or something else

Matt Venn · Answer

maybe < Tim Edwards> can answer when he gets back from DATE OSDA

Tim Edwards · Answer

< Matt Venn> I m already back

Yunus Emre ERYILMAZ · Answer

I 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 · Answer

This is the printed database file I think it does not produce any meaningful data about DRC It looks empty ` lt xml version= 1 0 encoding= utf 8 gt ` ` lt report database gt ` ` lt description gt SKY130 DRC runset lt description gt ` ` lt original file gt ` ` lt generator gt drc script= openlane sky130A libs tech klayout drc sky130A mr drc lt generator gt ` ` lt top cell gt top lt top cell gt ` ` lt tags gt ` ` lt tags gt ` ` lt categories gt ` ` lt categories gt ` ` lt cells gt ` ` lt cell gt ` ` lt name gt top lt name gt ` ` lt variant gt ` ` lt references gt ` ` lt references gt ` ` lt cell gt ` ` lt cells gt ` ` lt items gt ` ` lt items gt ` ` lt report database gt `