pytorch/cpuinfo

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1187 stars · 411 forks observed · 2026-08-28

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

A C/C++ library that detects CPU information essential for performance optimization, including supported instruction sets, cache details, core microarchitectures, and topology. It works across x86/x86-64/ARM/ARM64 architectures on Linux, Windows, macOS, Android, iOS, and FreeBSD.

Use cases

• detect which SIMD instruction sets the host CPU supports
• get CPU cache sizes and topology for performance tuning
• identify CPU microarchitecture at runtime to dispatch optimized code paths
• query processor name and vendor on mobile and desktop platforms
• handle heterogeneous cores like big.LITTLE in thread scheduling
• check if ARM NEON or x86 AVX is available before running optimized kernels

When to choose

• you need reliable, production-quality CPU feature and topology detection across multiple OSes and architectures
• you are writing performance-critical C/C++ code that dispatches based on CPU capabilities
• you target heterogeneous mobile SoCs and need per-core microarchitecture or cache info

When to avoid

• you only need basic CPU counts or simple feature flags available via OS APIs or std::thread::hardware_concurrency
• you work in a language ecosystem with its own CPU detection (e.g., Python's cpuinfo package)
• you need GPU or other hardware information, not CPU details

Facets

library · maturity stable

developer-tools sdk developer-tools hardware performance cross-platform windows cross-platform cpp c cpu-detection cpu-topology instruction-set cpu-cache cpuid big-little hardware-info linux macos android ios

Member repositories

For agents

markdown · JSON · MCP: product_card(name="pytorch/cpuinfo")