Hardware-specific lookup order and cache policies vary. The central idea is that the cost of waiting for data depends on which level can supply it.
An Instruction Load Meets the Memory Hierarchy
Visualize address translation, cache lookup, a lower-level fetch, and the dependent work that resumes when data arrives.
The Runtime Theory Team05 stages
trace / request.md
readyAn instruction requests data using a virtual address. The CPU may continue independent work while the load progresses.
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