Kobzol/hardware-effects resource

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2999 stars · 165 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A collection of small C++ proof-of-concept programs demonstrating hardware effects like cache conflicts, branch misprediction, false sharing, and memory bandwidth saturation that degrade performance in surprising ways. Each example includes a README explaining the underlying CPU and OS architecture behavior.

Use cases

• learn why my C++ program is slow despite good algorithms
• demonstrate cache effects to students
• understand branch misprediction penalties
• see false sharing in multithreaded code
• study memory hierarchy and prefetching behavior
• prepare for systems performance interviews

When to choose

• teaching or learning low-level CPU performance concepts
• building intuition for hardware-aware optimization on x86-64
• looking for minimal reproducible examples of performance pitfalls

When to avoid

• you need a production profiling or benchmarking tool
• you target non-x86 architectures like ARM
• you need NUMA or server-scale effects
• you want guaranteed reproducible results on your specific CPU

Facets

learning-resource · maturity stable

benchmarking developer-tools performance hardware education tutorials cpp cpu-architecture cache-effects branch-prediction memory-hierarchy performance-education demos linux x86-64

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Kobzol/hardware-effects")