Matt Liberty comments

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                                            Matt Liberty

Remove use of `popen` for gzip file reading and writing

@gadfort are you planning to tackle this one too?

Remove use of `popen` for gzip file reading and writing

Thanks - nobody has spent too much time with it...

Remove use of `popen` for gzip file reading and writing

Little in RCX is straightforward

Use MPL clusters as regions to evaluate the quality of std cell clusters' placement

With so many clusters its hard to tell who goes with who. Still it seems pretty clear this are quite different. Could you try it on something smaller/easier to visualize?

DO NOT MERGE: Add slew violation check to size_down, re-enable size_down.

I see merge conflicts to resolve. Is this otherwise ready for testing?

RSZ: Remove non-determinism and platform-specific behavior

That sounds useful

Enable opt_hier by default

In the nightly " bp_be_top nangate45 - 55m 9s" but in this PR its over 6h

Use `sin()`/`cos()` for the right type without need for widening.

I expect you are seeing https://github.com/The-OpenROAD-Project/OpenROAD/pull/8314 There are save_ok/save_def_ok/etc script to update the golden files thought they consist mostly of copying the result to the corresponding ok file. Low bit...

Add support for using retime and dretime from abc in synth.tcl

Fixed in https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/pull/3399

[ERROR ODB-0370] cts impossible due to set_dont_touch { <Instance> } command in .SDC

It is unclear what CTS should do in this case. Can you provide a more clear example? Simply turning it to a warning is unlikely to give a good outcome.