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Memory is one of the major determining factor of processor's performance in modern computers. As Moore's law predicts, the number of transistors in a clense

Memory is one of the major determining factor of processor's performance in modern computers. As
Moore's law predicts, the number of transistors in a clense integrated circuit doubles about every two
years. This is'however not the case with memory.
SUN Rock is one of the processors designed to support Chip Multithreading (CMT) to further tolerate
memory latency better. Multithreading enables tolerating cache miss latency when there is thread-level
parailelism (TLP). It tries to maximize throughput when threads are available and boost single-thread
performance when threads are not available and on cache misses. It does these by implementing
Runuhrad Mode on a cache miss and performing Branch predictions, to mention a few.
Explain what Runahead Muse is and how it works; mention advantages disadvantages and the
limitations.
Assume a SUN Rock processor takes four (4) clock cycles to decode an instruction and stalls for eight
(8) clock cycles on a cache miss. How many clock eycles can be saved when using runadhead mode
to execute two instructions each with a cache miss?
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