IBM are the masters of this: https://www.anandtech.com/show/16924/did-ibm-just-preview-the-future-of-caches https://www.anandtech.com/show/16924/did-ibm-just-pr

IBM are the masters of this: https://www.anandtech.com/show/16924/did-ibm-just-preview-the-future-of-caches https://www.anandtech.com/show/16924/did-ibm-just-preview-th... Processors can use the L2 cache from other (remote) processors before reaching out to DRAM.