Open MPI logo

Hardware Locality announce Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Hardware Locality Announcements mailing list

Subject: [hwloc-announce] Hardware Locality (hwloc) v0.9.2 released
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-11-05 10:12:28

The Hardware Locality (hwloc) team is pleased to announce the release
of v0.9.2 (we made some trivial documentation-only changes after the
v0.9.1 tarballs were posted publicly, and have therefore re-released
with the version "v0.9.2").
    (mirrors will update shortly)

hwloc provides command line tools and a C API to obtain the
hierarchical map of key computing elements, such as: NUMA memory
nodes, shared caches, processor sockets, processor cores, and
processor "threads". hwloc also gathers various attributes such as
cache and memory information, and is portable across a variety of
different operating systems and platforms.

hwloc primarily aims at helping high-performance computing (HPC)
applications, but is also applicable to any project seeking to exploit
code and/or data locality on modern computing platforms.

*** Note that the hwloc project represents the merger of the
libtopology project from INRIA and the Portable Linux Processor
Affinity (PLPA) sub-project from Open MPI. *Both of these prior
projects are now deprecated.* The hwloc v0.9.1/v0.9.2 release is
essentially a "re-branding" of the libtopology code base, but with
both a few genuinely new features and a few PLPA-like features added
in. More new features and more PLPA-like features will be added to
hwloc over time.

hwloc supports the following operating systems:

  * Linux (including old kernels not having sysfs topology
information, with
    knowledge of cpusets, offline cpus, and Kerrighed support)
  * Solaris
  * AIX
  * Darwin / OS X
  * OSF/1 (a.k.a., Tru64)
  * HP-UX
  * Microsoft Windows

hwloc only reports the number of processors on unsupported operating
systems; no topology information is available.

hwloc is available under the BSD license.

Jeff Squyres