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Poul-Henning Kamp profile picture
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We built the prototype for the ESO ELT Adaptive Optics Wave-Front Real Time Computer on a handful of 48-core Epyc machines, with a stock FreeBSD kernel.

10Kx6K matrix, 700 times per second, with microsecond jitter.

Worked fine.

(Then we did it again again ten years later on a single server, with a stock Linux kernel, because they had standardized on that.)

See:

https://www.eso.org/sci/meetings/2023/RTC4AO/01_04_suarez_valles.pdf

and

https://www.eso.org/sci/meetings/2023/RTC4AO/01_10_pedersen-kamp.pdf