Tagged ssd
2 write-ups.
The Working Set That Never Saturated
A count table is random access, so in principle only the pages a document touches need be resident. Across eight real files, seven were still pulling in new pages after 2,700 completions. Then I measured the latency constant the verdict rested on and found it optimistic by 1.8x.
Predicting the Speed of a 276B Model Streamed From an SSD
A from-config cost model for streaming a mixture-of-experts model off an SSD, validated byte-for-byte against a runtime I didn't write. Then the SSD benchmark turned out to be measuring RAM, and the real run missed the speed prediction by 23×, for the one reason the model had declared it couldn't account for.