Your idea is impractical from a "caching for performance" perspective, for the reasons other have pointed out. However, there is work to enable multi-machine c

Your idea is impractical from a "caching for performance" perspective, for the reasons other have pointed out. However, there is work to enable multi-machine coherent memory. I just saw [1] today. This is kind of similar, you're giving a single, unified view to memory across multiple machines. But you do this to easily share data as part of a new programming paradigm, not to speed up your code. https://www.westerndigital.com/company/newsroom/press-releases/2018/2018-12-04-western-digital-delivers-new-innovations-to-drive-open-standard-interfaces-and-risc-v-processor-development https://www.westerndigital.com/company/newsroom/press-releas...