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cerulean cave

interested in the design patterns of coherent distributed systems and removing layers of abstraction, starting with compilers, operating systems, riscv proce...

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return to the trenches

thank you marty, jush, oxmer, colman, and fleetwood for review howard is my tenstorrent dev box - 4 N300 cards, 8 wormhole chips, 512 tensix cores, 96gb of gddr6, and an amd epyc to babysit it all. he'd been sitting idle for months. then jim keller appeared in my dream and scolded me for wasting resources. so i'm back in the metal trenches. the setup 4 N300 cards (8 wormhole b0 chips) in an AMD…

the 3-ish week bug

i've been writing an operating system called zestos . it is based on mit's xv6 and written in zig for the riscv64 architecture. 3 weeks ago, a bug came up during the kernel's memory initialization phase, stemming from an oversight in extending the size of kernel stacks for each process. in zestos, there are 64 processes, each with a kernel stack occupying two pages: a guard page: blocked to…