Memory Matters: Unpacking Drepper's Memory Rules for Modern Code

A deep dive into Ulrich Drepper's seminal 2007 paper, What Every Programmer Should Know About Memory. We explore the memory bottleneck, cache hierarchies, latency shocks, and the costs of cache misses and coherence (RFOs), then translate those ideas into practical patterns—maximizing spatial locality, smart data layout, and real-world gains like matrix-multiplication optimizations—for memory-aware software on today’s multi-core systems.

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