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Mock array multiple metal layers pins #2412

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oharboe
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@oharboe oharboe commented Oct 2, 2024

This test case is best articulated as a pull request. There are some issues to be worked out with pins on multiple metal layers.

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oharboe commented Oct 2, 2024

Broke out github issue for failure The-OpenROAD-Project/OpenROAD#5853

No other test-case in ORFS before this of pins on multiple metal layers.

Signed-off-by: Øyvind Harboe <[email protected]>
@oharboe oharboe force-pushed the mock-array-multiple-metal-layers-pins branch from 9109abc to c1dc39c Compare October 3, 2024 18:49
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oharboe commented Oct 6, 2024

@maliberty PDN works now, but lots of DRC errors on the sides:

image

image

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Looks like you need The-OpenROAD-Project/OpenROAD#5854 for the pins to be on track.

That said I wonder if we couldn't have routed these off-grid as there are no other wires to conflict with - @osamahammad21 thoughts?

image

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Nvm, that layer has LEF58_RIGHTWAYONGRIDONLY

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oharboe commented Oct 7, 2024

Looks like you need The-OpenROAD-Project/OpenROAD#5854 for the pins to be on track.

Thanks! I'll keep this PR open and try again when it is merged.

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oharboe commented Oct 10, 2024

@maliberty FYI, works now.

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oharboe commented Oct 10, 2024

@maliberty I've reenabled pin placement annealing. That it is slow is a separate concern to this PR, issue filed.

"value": 0.0,
"value": -15.92,
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Any insight into this degradation?

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I think we need the --annealing io fix first before we have something comparable, but that said things are quite different w.r.t. routing and metal layers. 15ns isnt much, CTS has more variations, etc

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I hope its ps

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oharboe commented Oct 10, 2024

@maliberty Annealing runs "forever" (usually seconds, now hours). Seperate issue filed.

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oharboe commented Oct 11, 2024

@maliberty times out after 6 hours in PPL. Will retry after The-OpenROAD-Project/OpenROAD#5847 is fixed.

auto-merge was automatically disabled October 12, 2024 07:09

Head branch was pushed to by a user without write access

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oharboe commented Oct 12, 2024

@maliberty @eder-matheus Lots of new DRC errors. It might be worth looking at recent pin placement changes.

If the mirror option was broken, it could present itself as these DRC errors:

image

image

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oharboe commented Oct 12, 2024

@maliberty @eder-matheus These pins should be connected to the bottom of the element, so the problem is in the pin placement of the element, it would seem.

image

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oharboe commented Oct 12, 2024

@maliberty @eder-matheus io_outs_down[9] should be at the bottom.

image

to reproduce with latest OpenROAD master:

io_placement.tar.gz

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It is easier to track issues when filed as such. @eder-matheus please take a look.

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oharboe commented Oct 12, 2024

It is easier to track issues when filed as such. @eder-matheus please take a look.

Filed here: The-OpenROAD-Project/OpenROAD#5926

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oharboe commented Oct 15, 2024

@maliberty @eder-matheus Works :-) Ready to merge now, saw pr-head passed for mock-array by drilling into the run.

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oharboe commented Oct 15, 2024

@maliberty There are unrelated failures in pr-head. Those are presumably there because of my OpenROAD update. I will merge latest master with this PR after OpenROAD has been updated in master.

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I will merge latest master with this PR after OpenROAD has been updated in master.

Is there another PR doing this?

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oharboe commented Oct 15, 2024

I will merge latest master with this PR after OpenROAD has been updated in master.

Is there another PR doing this?

The bot that updates OpenROAD in ORFS?

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Please address the conflicts

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oharboe commented Oct 20, 2024

Please address the conflicts

Fixed.

@maliberty maliberty merged commit 62723bf into The-OpenROAD-Project:master Oct 20, 2024
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@oharboe oharboe deleted the mock-array-multiple-metal-layers-pins branch October 21, 2024 20:00
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2 participants