alt Hacker News>> It replicates data across multiple, independent DRAM channels with uncorrelated refresh schedules
This is the sort of thing which was done before in a world where there was NUMA, but that is easy. Just task-set and mbind your way around it to keep your copies in both places.
The crazy part of what she's done is how to determine that the two copies don't get get hit by refresh cycles at the same time.
Particularly by experimenting on something proprietary like Graviton.
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rockskon • today at 4:59 AM
She determines that by having three copies. Or four. Or eight.
Tis just probabilities and unlikelihood of hitting a refresh cycle across that many memory channels all at once.
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"This is the sort of thing which was done before in a world where there was NUMA"
You sound like NUMA was dead, is this a bit of hyperbole or would really say there is no NUMA anymore. Honest question because I am out if touch.