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Hwloc

May 26, 2018

Portable Hardware Locality software package

The Portable Hardware Locality hwloc software package provides a portable abstraction across OS, versions, architectures, … of the hierarchical topology of modern architectures, including as follows

  • NUMA memory nodes;
  • sockets;
  • shared caches;
  • cores and simultaneous multithreading. It also gathers various system attributes such as cache and memory information as well as the locality of I/O devices such as network interfaces, InfiniBand HCAs or GPUs. It primarily aims at helping applications with gathering information about modern computing hardware so as to exploit it accordingly and efficiently [1].

[1] Portable Hardware Locality hwloc WWW.

WWW http//www.open-mpi.org/projects/hwloc/