hwloc: hwloc (Portable Hardware Locality) hwloc: hwloc: The Portable Hardware Locality (hwloc) software package provides a hwloc: portable abstraction (across OS, versions, architectures, ...) of the hwloc: hierarchical topology of modern architectures, including NUMA memory hwloc: nodes, sockets, shared caches, cores and simultaneous multithreading. hwloc: It also gathers various system attributes such as cache and memory hwloc: information as well as the locality of I/O devices such as network hwloc: interfaces, InfiniBand HCAs or GPUs. hwloc: hwloc: