ChanServ changed the topic of #yosys to: Yosys Open SYnthesis Suite: https://github.com/YosysHQ/yosys/ | Channel logs: https://libera.irclog.whitequark.org/yosys/
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<knicklicht41> Hey all and happy new year, is it possible to further refine timing optimizations when using -abc9 with synth_ecp5?
<gatecat> knicklicht41: you can try the flow3 trick mentioned here: https://github.com/Ravenslofty/yosys-cookbook/blob/master/ecp5.md
<knicklicht41> Thanks, I am very close to my target. Can I set the seed to the RNG somewhere so that I can try different values systematically?
<agg> knicklicht41: You can pass --seed to nextpnr-ecp5, I wrote a script a while back to run lots of seeds in parallel and report the best https://gist.github.com/adamgreig/b040b6e3d7a7a64f613780eae6c07930
<agg> Not unusual to scrape like 10% more timing that way
<knicklicht41> Thanks a lot, I will definitely check it out.
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<lofty> agg: for added fun, Yosys has a semi-hidden mode which can also gain depth/area sometimes
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