The Runtime Theory

How Why Memory Locality Matters works

An interactive concept flow for why memory locality matters, from its assumptions through the main operation and boundary checks.

The Runtime Theory Team05 stages

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CONTRACTREPRESENTATIONOPERATIONBOUNDARYRESULT

readyProcessors use a hierarchy of storage because small, nearby storage can be accessed faster than large, distant storage. A cache keeps copies of recently or predictably used memory blocks. Programs benefit when accesses show temporal locality, reusing data, or spatial locality, touching nearby addresses.

Use the stages in order to explain why memory locality matters. Each stage makes one assumption visible: what the operation promises, what representation it uses, how state changes, which boundary can invalidate a shortcut, and what evidence confirms the result.

For a worked explanation, continue to the topic article and execution trace.

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