InterNautic

Minix was released in 1987 - if internet is correct it was meant to run on IBM PC.

I know that Polish IPIX (not much is known about it tho other than it was written to run on Polish Krak-86 computer https://pl.wikipedia.org/wiki/IPIX) was already POSIX compliant in 1988. I don't know much more about it's age - is it "older" than 1988 or not. History of communist era hardware and software are not part of teaching program in Poland and only few hobbyists seems to care about collecting and keeping software, hardware and documentation from these times as well as recording history of that era of computerization in Poland.

I see no mentions of any other UNIX type OS on x86 platform this much back in time. Only 386BSD that was being developed since 1989 (which makes it younger than Minix and IPIX).

Were there any other notable or obscure attempts or successes in creating "UNIX for x86"?

English language video about a 30kg-heavy data streamer drive for a Soviet PDP-11 clone mainframe, made in 1985. https://www.youtube.com/watch?v=K7PQIRKF8wI

This is a pretty new channel on youtube that started about a year ago. You can see them restoring some Soviet times constructions including based on 286 clones.If you are a retro computing nerd you should be satisfied. https://www.youtube.com/@ChernobylFamily/videos

Video from channel of an owner and restoration hobbyist from Poland who owns and runs a working (as far as age and quality of socialist era components allows it) unit of that computer. Mera-400 is a descendant of legendary K-202 architecture designed by Jacek Karpiński (Polish computer systems engineer known for analog and digital computers designs including his 1964 variant of Perceptron - early neural network type of computer).

More detailed article on Jacek Karpiński is available at English language wikipedia.

Mera-400 was notable for running CROOK operating system that was an OS influenced by UNIX.

Video with subtitles, you can use auto-translate to English: https://www.youtube.com/watch?v=H7gh1PEqVak

It always been amazing me how simple solution it would be and hardware compliant pretty much on every CPU platform in existence. But for some strange reason carry get totally ignored in language design.

Anyone here have any experience with building any clusters with it? What mechanisms are being used to do so? Can you run multithreaded/multiprocess applications on these clusters without need to change applications or constantly tweak the system before running different applications?

Is something not fitting that model? Are there any costs that are too big in some cases? Is some too much mind boggling than needed?