Is there a way to launch the OpenRoad GUI using op...
# openlanem
Matthew Guthaus
03/22/2023, 3:05 PMIs there a way to launch the OpenRoad GUI using openlane makefiles so that it includes the STA constraints? (I'm not sure if this is "built in"... I know I could do it through scripting...)
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Matt Liberty
03/22/2023, 3:50 PMIt does load the sdc & liberty data. However I don't see that it loads parasitics so that might be an enhancement
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Matthew Guthaus
03/22/2023, 4:59 PM@Matt Liberty What is the target for that? I'm just loading the odb file and it doesn't seem to store that info.
Matthew Guthaus
03/22/2023, 5:00 PMIs there a command file somewhere?
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Matt Liberty
03/22/2023, 5:00 PMm
Matthew Guthaus
03/22/2023, 5:03 PMI see. You can run it from flow.tcl. Thanks.
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Matt Liberty
03/22/2023, 5:03 PMyou can run with-gui and it will get automatically invoked
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Matthew Guthaus
03/22/2023, 5:03 PMIs there a way to do it post-mortem, after a run has finished?
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Matt Liberty
03/22/2023, 5:05 PMThat's sort of the use model for it. It started out just for looking at the layout though. It probably needs updating to handle timing post-mortem
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Matthew Guthaus
03/22/2023, 5:06 PMI hadn't played with it until now (for my upcoming class). It is pretty slick.
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Matthew Guthaus
03/22/2023, 5:07 PM"[ERROR]: CURRENT_ODB is unset." Hrm.
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Matt Liberty
03/22/2023, 5:08 PMYou might need to -tag to point at the run you want to load
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Matthew Guthaus
03/22/2023, 5:09 PMPerfect. i get it. Thanks
Matthew Guthaus
03/22/2023, 5:09 PMYeah, it looks like something needs to be done to get timing in there. I'll poke at it more.
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Matt Liberty
03/22/2023, 5:11 PMsta.tcl and sta_multi_corner.tcl (depending on your needs) probably have the missing magic
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Matthew Guthaus
03/22/2023, 5:43 PMOh, the SDC is loaded, you just need to press "Update" in the GUI to get the results.
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Matt Liberty
03/22/2023, 5:43 PMyes
Matt Liberty
03/22/2023, 5:44 PMAnytime you change the timing you should hit update.
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Matthew Guthaus
03/22/2023, 5:54 PMSame with clock hierarchy.
It doesn't seem to show wire delays in the interface though. And the timing is slightly different than the post-GR or rcx timing.
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Matt Liberty
03/22/2023, 5:55 PMThat because no paraasitics have been loaded in the gui.tcl script. You are at best getting wire load models.
Matt Liberty
03/22/2023, 5:56 PMIf they are loaded you should see the delay in both
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Matthew Guthaus
03/22/2023, 5:59 PMOk, I see different results when loading a spef but still no wire delays in the GUI.
Matthew Guthaus
03/22/2023, 6:00 PMIt's good enough to give my students an idea. And a reason to encourage them to look at the STA reports. 🙂
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Matt Liberty
03/22/2023, 6:00 PM🙂
Matt Liberty
03/22/2023, 6:03 PM68 Views