Copied literally from the task description:
"This serial code is run on one core of a 24-core processor with cache sizes of 32 KiB (per-core L1), 1 MiB (per-core L2), and 27 MiB (shared L3)".
I believe this answers all your questions.
"This serial code is run on one core of a 24-core processor with cache sizes of 32 KiB (per-core L1), 1 MiB (per-core L2), and 27 MiB (shared L3)".
I believe this answers all your questions.