hwloc 提供一组命令行工具和 C 语言的开发包，用来获取系统中层次化的关键计算元素，例如 NUMA 内存节点、共享缓存、处理器套接字、处理器核心以及处理器线程等等。

Hardware Locality 1.3 发布，

I/O devices and bridges were added to the topology; lstopo displays them by default. XML is now always supported, even without libxml2. Associativity information was added to caches. Support for s390 books were added. Grouping can now be relaxed. The OS-provided distance matrix can be overridden. Some options were added to the command line tools.