The Hardware Locality (hwloc) team is pleased to announce the first release candidate for v1.10:
http://www.open-mpi.org/projects/hwloc/ v1.10rc1 is the first milestone of a major feature release. There is no new major feature in this release, just improvements everywhere. If you are buying new Intel Xeon E5 with 10 cores or more, this release is required for proper Socket/NUMA detection until the kernel gets fixed. * API + Add hwloc_topology_export_synthetic() to export a topology to a synthetic string without using lstopo. See the Synthetic topologies section in the documentation. + Add hwloc_topology_set/get_userdata() to let the application save a private pointer in the topology whenever it needs a way to find its own object corresponding to a topology. + Add hwloc_get_numanode_obj_by_os_index() and document that this function as well as hwloc_get_pu_obj_by_os_index() are good at converting nodesets and cpusets into objects. + hwloc_distrib() does not ignore any objects anymore when there are too many of them. They get merged with others instead. Thanks to Tim Creech for reporting the issue. * Tools + hwloc-bind --get <command-line> now executes the command after displaying the binding instead of ignoring the command entirely. Thanks to John Donners for the suggestion. + Clarify that memory sizes shown in lstopo are local by default unless specified (total memory added in the root object). * Synthetic topologies + Synthetic topology descriptions may now specify attributes such as memory sizes and OS indexes. See the Synthetic topologies section in the documentation. + lstopo now exports in this fully-detailed format by default. The new option --export-synthetic-flags may be used to revert back the old format. * Documentation + Add the doc/examples/ subdirectory with several real-life examples, including the already existing hwloc-hello.C for basics. Thanks to Rob Aulwes for the suggestion. + Improve the documentation of CPU and memory binding in the API. + Add a FAQ entry about operating system errors, especially on AMD platforms with buggy cache information. + Add a FAQ entry about loading many topologies in a single program. * Misc + Work around buggy Linux kernels reporting 2 sockets instead 1 socket with 2 NUMA nodes for each Xeon E5 v3 (Haswell) processor. + pciutils/libpci support is now removed since libpciaccess works well and there's also a Linux-specific PCI backend. For the record, pciutils was GPL and therefore disabled by default since v1.6.2. + Add --disable-cpuid configure flag to work around buggy processor simulators reporting invalid CPUID information. Thanks for Andrew Friedley for reporting the issue. + Fix a racy use of libltdl when manipulating multiple topologies in different threads. Thanks to Andra Hugo for reporting the issue and testing patches. + The plugin ABI has changed, this release will not load plugins built against previous hwloc releases. v1.10rc1 also contains some bug fixes that are waiting for a v1.9.2 stable release that may or may not ever happen: * Fix some build failures in private/misc.h. Thanks to Pavan Balaji and Ralph Castain for the reports. * Fix failures to detect X11/Xutil.h on some Solaris platforms. Thanks to Siegmar Gross for reporting the failure. -- Brice
