The Hardware Locality (hwloc) team is pleased to announce the first release
candidate of v1.2:
http://www.open-mpi.org/projects/hwloc/
v1.2 is a major new release series for hwloc. It includes many new features
and changes over the v1.1.x series.
The just-released v1.1.2 is expected to be the last release of its series
(see http://www.open-mpi.org/community/lists/hwloc-announce/2011/04/0014.php).
The following is a summary of the changes since the v1.1 series:
* Major features
+ Expose latency matrices in the API as an array of distance structures
within objects. Add several helpers to find distances.
+ Add hwloc_topology_set_distance_matrix() and environment variables
to provide a matrix of distances between a given set of objects.
+ Add hwloc_get_last_cpu_location() and hwloc_get_proc_last_cpu_location()
to retrieve the processors where a process or thread recently ran.
- Add the corresponding --get-last-cpu-location option to hwloc-bind.
+ Add hwloc_topology_restrict() to restrict an existing topology to a
given cpuset.
- Add the corresponding --restrict option to lstopo.
* Minor API updates
+ Add hwloc_bitmap_list_sscanf/snprintf/asprintf to convert between bitmaps
and strings such as 4-5,7-9,12,15-
+ hwloc_bitmap_set/clr_range() now support infinite ranges.
+ Clarify the difference between inserting Misc objects by cpuset or by
parent.
+ hwloc_insert_misc_object_by_cpuset() now returns NULL in case of error.
* Discovery improvements
+ x86 backend (for freebsd): add x2APIC support
+ Support standard device-tree phandle, to get better support on e.g. ARM
systems providing it.
+ Detect cache size on AIX. Thanks Christopher and IBM.
+ Improve grouping to support asymmetric topologies.
* Tools
+ Command-line tools now support "all" and "root" special locations
consisting in the entire topology, as well as type names with depth
attributes such as L2 or Group4.
+ hwloc-calc improvements:
- Add --number-of/-N option to report the number of objects of a given
type or depth.
- -I is now equivalent to --intersect for listing the indexes of
objects of a given type or depth that intersects the input.
- Add -H to report the output as a hierarchical combination of types
and depths.
+ Add --thissystem to lstopo.
+ Add lstopo-win, a console-less lstopo variant on Windows.
* Miscellaneous
+ Remove C99 usage from code base.
+ Rename hwloc-gather-topology.sh into hwloc-gather-topology
--
Brice Goglin
