Sunday, 2022-03-27

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cr1901At some point between Nov 24, 2021 and today, the segfault I was seeing in the symbiflow/f4pga plugins disappeared04:59
cr1901I tried using a _local_ version of yosys that was "known to crash" on one of the plugins (Idk which), and I can no longer duplicate05:00
cr1901(All this to say- I can't currently bisect to figure out the what got fixed)05:00
cr1901other than it was something on the plugins side that appeared to have gotten fixed05:01
cr1901Okay, I had a copy of plugins from Nov 24, 2021 still on my system... design_introspection.so is the culprit05:23
cr1901... which has not been updated in 7 months ._.05:29
cr1901Well, cannot duplicate locally anymore. I had a version of design_introspection.so that I compiled locally on around Nov 24 that I _confirmed_ also had the bug06:10
cr1901But when I compile the same commit now, there's no bug06:10
cr1901At this point I'm satisfied there was a compiler bug or something06:10
cr1901(that made it's way into the conda repos- Ubuntu 20.04- releated? But for whatever reason the devs couldn't duplicate locally)06:11
F4PGASlackBridge<evantandersen> hey, this may be an odd request - but is there anything that can be done short to medium term to improve the performance of yosys/nextpnr? specifically to reduce area to levels more comparable to IceCube. We are contemplating switching, and as a commercial operation we could toss some money at this if that would help09:44
F4PGASlackBridge<evantandersen> right now we're targeting lp1k (1280 lut). Icecube compiles our design to 1003, yosys-abc9 + nextpnr = 123009:44
lkclevantanderson: you might like to consider asking the same question on libera.chat on #yosys and you'll likely find there's people there willing to take on commercial contracts10:02
lkclwhich btw is great to hear about that you're willing to do that.10:04
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Jay8Heyy10:28
F4PGASlackBridge<evantandersen> im not always in these channels, if you're interested, add me on discord: charliehorse55#268910:39
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lkclevantandersen: you can "fix" that by using either the matrix bridge to libera.chat (which will effectively store-and-forward replies), or you can use an IRC relay such as BNC4YOU.10:55
lkclanother suggestion would be to set up a one-time corporate email address and publish it so that interested parties, particularly those seeing the IRC logs in say 1+ weeks time, could reach out10:57
lambdayeah, you might not have much luck handing a discord handle to IRC users ;)11:15
lkcli didn't want to be the one to say it :)11:16
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