Background: Multiprocessor Architecture
This lesson discusses hardware caches and caching based on locality. Additionally, you will also learn about the problem of cache coherence and how it is solved by the hardware.
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Hardware caches
To understand the new issues surrounding multiprocessor scheduling, we have to understand a new and fundamental difference between single-CPU hardware and multi-CPU hardware. This difference centers around the use of hardware caches (see figure below), and exactly how data is shared across multiple processors. We now discuss this issue further, at a high level. Details are available ...
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