(in an SDC I mean
# timing-closuret
tnt
08/31/2022, 8:36 PM(in an SDC I mean
m
Matt Liberty
08/31/2022, 9:51 PMjust don't apply an input delay and there will be nothing to time
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tnt
08/31/2022, 9:52 PMWell, I didn't set one on those port and still saw them in the timing report which is what had gotten me confused TBH.
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Matt Liberty
08/31/2022, 9:53 PMwhat's in your sdc?
Matt Liberty
08/31/2022, 9:53 PMare you using all_inputs?
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tnt
08/31/2022, 9:57 PMtnt
08/31/2022, 9:57 PMThis is the current one. I added the
false pathm
Matt Liberty
08/31/2022, 9:59 PMWhat did the path look like before the fp command? What command generated it?
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tnt
08/31/2022, 10:02 PMMmm, I think I deleted that run result now. I've just started a new one with the false path removed. Should have it in a few minutes.
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Matt Liberty
08/31/2022, 10:03 PMthe set false path is fine as a solution, I'm just curious about the problem
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tnt
08/31/2022, 10:07 PMYeah me too, always like to understand when something doesn't work the way I expect 😅
tnt
08/31/2022, 10:16 PMtnt
08/31/2022, 10:17 PMHere's one of them.
Although there is less now than there used to be so not sure what changed 🤔
m
Matt Liberty
08/31/2022, 10:17 PMare you sure no other sdc is being loaded?
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tnt
08/31/2022, 10:18 PMNo I am not ... it's OpenLane, it's a huge thing and I'm far from understanding all of it ...
tnt
08/31/2022, 10:20 PMAlthough looking at the logs, doesn't look like it.
tnt
08/31/2022, 10:21 PMm
Matt Liberty
08/31/2022, 10:28 PMthis is hard to explain - is it easy to package as a test case?
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tnt
08/31/2022, 10:31 PMThat I have no idea. I'm running it through a pre-setup github action.
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Matt Liberty
08/31/2022, 10:32 PMI see tinytapeout in the name - is this GA action part of that?
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tnt
08/31/2022, 10:33 PMtnt
08/31/2022, 10:33 PMThis is the run in question and you can download the whole "run" output for it.
tnt
08/31/2022, 10:34 PMyeah, this is the scan_controller for tinytapeout. (so not the small projects themselves, but the "management" stuff)
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Matt Liberty
08/31/2022, 10:35 PMok let me look through that for a bit
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tnt
08/31/2022, 10:35 PMThanks !
tnt
08/31/2022, 10:40 PMscan_controller/reports/signoff/29-rcx_mca_sta.*.rptm
Matt Liberty
08/31/2022, 11:00 PMI can see the problem but not the cause easily. I'll try to see if I can run OL from this package and reproduce this issue
🙌 1
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tnt
08/31/2022, 11:17 PM👍 Thanks. I'm about to head in for the night, but definitely interested in your findings.
m
Matt Liberty
09/01/2022, 4:59 PMt
tnt
09/01/2022, 10:40 PM"It's not a bug, it's a feature" 😅
m
Matt Liberty
09/04/2022, 1:57 PMIt's different from the proprietary tools but it is safer in the case that some missed constraining a port. This way you have to explicitly say you don't care which seems reasonable.
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