HI <!here> and <@U016EM8L91B>
# shuttlea
Amro Tork
07/12/2021, 9:07 AMHI <!here> and @User
m
Mitch Bailey
07/12/2021, 9:15 AM@Amro Tork Maybe look here and search for
off_grid rulea
Amro Tork
07/12/2021, 10:12 AMThanks @Mitch Bailey
e
Eslam Morsie
07/12/2021, 10:51 AMHello @Mitch Bailey what is the parameter <types> mean in off_grid command ?
Eslam Morsie
07/12/2021, 11:08 AMHelp is not containing any information!
a
Amro Tork
07/12/2021, 11:11 AMoff_grid types pitch whyTypes is a list of types that will be checked for off-grid positions, and may be any set of types with no restrictions. Pitch is the spacing of the mininum manufacturing grid.
Amro Tork
07/12/2021, 11:11 AM@Eslam Morsie
Amro Tork
07/12/2021, 11:11 AM@Tim Edwards I believe types here refer to either a layer or datatypes?
Amro Tork
07/12/2021, 11:11 AMIs that correct?
Amro Tork
07/12/2021, 11:13 AM@Eslam Morsie
Amro Tork
07/12/2021, 11:13 AMHere is the definition of types:
Amro Tork
07/12/2021, 11:13 AMt
Tim Edwards
07/12/2021, 3:00 PM"off_grid" is not a command, but a DRC check type. It is very, very difficult to make an off-grid error in magic, though, because its database is an integer grid at the 5nm limit.
a
Amro Tork
07/12/2021, 3:15 PM@Tim Edwards Thanks
t
Tim Edwards
07/12/2021, 4:40 PMFYI, I found out today that the precheck has the off-grid error check in klayout commented out. I don't know who did that, when, or why, but it should not have been. I think Jeff gave you instructions on how to make sure that check is active in your local precheck?
a
Amro Tork
07/12/2021, 4:43 PM@Tim Edwards no worries. I appreciate all the help.
Amro Tork
07/12/2021, 4:43 PMThanks for all the help.
Amro Tork
07/12/2021, 4:43 PMWe are fixing it right now.
Amro Tork
07/12/2021, 4:43 PMBut I didn't get anything from @jeffdi. He only mentioned that we could use Klayout to do the check.
Amro Tork
07/12/2021, 4:44 PM@Eslam Morsie is currently working on fixing the layout.
j
jeffdi
07/12/2021, 5:03 PM
@Amro Tork the klayout drc tech file is available through open_pdks (in libs.tech/klayout). Near the top, there are a set of boolean parameters for enabling front-end, back-end and offgricks. I’d recommend setting just offgrid checks initially, and loading and running in klayout. the offgrid checks are fast.
a
Amro Tork
07/12/2021, 5:05 PM@jeffdi That's what we are doing manually now. But I was wondering if there is a way to do that inside the precheck.
Amro Tork
07/12/2021, 5:05 PMI want to run the precheck and make sure it's clean at the end.