Why should shared vs. private L2 caches be used for single-threaded, multi-threaded, and multiprogrammed workloads, and should they be reassessed now that on-chip L3 caches are available?

In light of the development of L3 caches that are integrated into the chip, we should reconsider the advantages of shared L2 caches as opposed to private L2 caches for single-threaded, multi-threaded, and multiprogrammed workloads, and talk about the trade-offs between the two types of caches.

Consider the advantages and disadvantages of shared vs. private L2 caches for single-threaded, multi-threaded, and multiprogrammed workloads, and revisit if on-chip L3 caches are available.

Discuss the benefits and drawbacks of shared vs private L2 caches for single-threaded, multi-threaded, and multiprogrammed workloads in light of the availability of L3 caches on the chip itself.