Carafe output is in this font. Needed input is in bold.
carafe> big extract mycircuit.gds gdsThis will start partition mode circuit extraction by determining the bounding box of the circuit. Once that is done you'll be prompted:
Cell mycircuit bounding box: ll: (-75000, -50000) ur: (88000, 181000) Enter partition size (width height) in centimicrons : 50000 90000You give it the partition size: width height and it will extract on it's merry way.
If you know the bounding box ahead of time (maybe you ran big option bbox...) Or if you have a feel for partition sizes, you can set the partition size before you extract by using:
carafe> big option partitionsize 50000 90000And then run the big extract command.
If you really do know the bounding box, you can tell it that ahead of time too:
carafe> big option bbox -75000 50000 88000 181000And if you are using a gds file (as opposed to a mag file...) you need to tell it the top level cell name if you gave it the bounding box:
carafe> big option gdstoplevel MYCIRCUITThen you can run:
carafe> big extract mycircuit.gds gdsWithout any extra input needed.