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Copyright © 2009 CNRS
Copyright © 2009-2017 Inria. All rights reserved.
Copyright © 2009-2013 Université Bordeaux
Copyright © 2009-2011 Cisco Systems, Inc. All rights reserved.
$COPYRIGHT$
Additional copyrights may follow
$HEADER$
===========================================================================
This file contains the main features as well as overviews of specific
bug fixes (and other actions) for each version of hwloc since version
0.9 (as initially released as "libtopology", then re-branded to "hwloc"
in v0.9.1).
Version 2.0.0
-------------
* The ABI of the library has changed. For instance some hwloc_obj fields
were reordered.
- HWLOC_API_VERSION and hwloc_get_api_version() now give 0x00020000.
- See "How do I handle ABI breaks and API upgrades ?" in the FAQ
and https://github.com/open-mpi/hwloc/wiki/Upgrading-to-v2.0-API
* Major changes
+ Topologies always have at least one NUMA object. On non-NUMA machines,
a single NUMA object is added to describe the entire machine memory.
The NUMA level cannot be ignored anymore.
+ The HWLOC_OBJ_CACHE type is replaced with 8 types HWLOC_OBJ_L[1-5]CACHE
and HWLOC_OBJ_L[1-3]ICACHE that remove the need to disambiguate levels
when looking for caches with _by_type() functions.
- New hwloc_obj_type_is_{,d,i}cache() functions may be used to check whether
a given type is a cache.
+ Replace hwloc_topology_ignore*() functions with hwloc_topology_set_type_filter()
and hwloc_topology_set_all_types_filter().
- Contrary to hwloc_topology_ignore_{type,all}_keep_structure() which
removed individual objects, HWLOC_TYPE_FILTER_KEEP_STRUCTURE only removes
entire levels (so that topology do not become too asymmetric).
+ Remove HWLOC_TOPOLOGY_FLAG_ICACHES in favor of hwloc_topology_set_icache_types_filter()
with HWLOC_TYPE_FILTER_KEEP_ALL.
+ Remove HWLOC_TOPOLOGY_FLAG_IO_DEVICES, _IO_BRIDGES and _WHOLE_IO in favor of
hwloc_topology_set_io_types_filter() with HWLOC_TYPE_FILTER_KEEP_ALL or
HWLOC_TYPE_FILTER_KEEP_IMPORTANT.
+ hwloc_topology_restrict() doesn't remove objects that contain memory
by default anymore.
- The list of existing restrict flags was modified.
+ XML export functions take an additional flags argument,
for instance for exporting XMLs that are compatible with hwloc 1.x.
+ The distance API has been completely reworked. It is now described
in hwloc/distances.h.
+ Add the experimental netloc subproject. It is enabled by default when
supported and can be disabled with --disable-netloc.
It currently brings command-line tools to gather and visualize the
topology of InfiniBand fabrics, and an API to convert such topologies
into Scotch architectures for process mapping.
See the documentation for details.
+ Remove the online_cpuset from struct hwloc_obj. Offline PUs get unknown
topologies on Linux nowadays, and wrong topology on Solaris. Other OS
do not support them. And one cannot do much about them anyway. Just keep
them in complete_cpuset.
+ Remove the custom interface for assembling the topologies of different
nodes as well as the hwloc-assembler tools.
+ Remove Kerrighed support from the Linux backend.
+ Remove Tru64 (OSF/1) support.
- Remove HWLOC_MEMBIND_REPLICATE which wasn't available anywhere else.
* API
+ Objects now have a "subtype" field that supersedes former "Type" and
"CoProcType" info attributes.
+ The almost-unused "os_level" attribute has been removed from the
hwloc_obj structure.
+ I/O and Misc objects are now stored in a dedicated children list, only
normal children with non-NULL cpusets and nodesets are in the main
children list.
- hwloc_get_next_child() may still be used to iterate over these 3 lists
of children at once.
+ Replace hwloc_topology_insert_misc_object_by_cpuset() with
hwloc_topology_insert_group_object() to precisely specify the location
of an additional hierarchy level in the topology.
+ Misc objects have their own level and depth to iterate over all of them.
+ Misc objects may now only be inserted as a leaf object with
hwloc_topology_insert_misc_object() which deprecates
hwloc_topology_insert_misc_object_by_parent().
+ hwloc_topology_set_fsroot() is removed, the environment variable
HWLOC_FSROOT may be used for the same remote testing/debugging purpose.
+ hwloc_type_sscanf() deprecates the old hwloc_obj_type_sscanf().
+ hwloc_type_sscanf_as_depth() is added to convert a type name into
a level depth.
+ hwloc_type_name() deprecates the old hwloc_obj_type_string().
+ Remove the deprecated hwloc_obj_snprintf(), hwloc_obj_type_of_string(),
hwloc_distribute[v]().
+ hwloc_obj_cpuset_snprintf() is deprecated in favor of hwloc_bitmap_snprintf().
+ Functions diff_load_xml*(), diff_export_xml*() and diff_destroy() in
hwloc/diff.h do not need a topology as first parameter anymore.
+ hwloc_parse_cpumap_file () superseded by hwloc_linux_read_path_as_cpumask()
in hwloc/linux.h.
* Tools
- lstopo and hwloc-info have a new --filter option matching the new filtering API.
- hwloc-distances was removed and replaced with lstopo --distances.
* Plugin API
+ hwloc_fill_object_sets() is renamed into hwloc_obj_add_children_sets().
* Misc
+ Linux OS devices do not have to be attached through PCI anymore,
for instance enabling the discovery of NVDIMM block devices.
+ Add a SectorSize attribute to block OS devices on Linux.
+ Misc MemoryModule objects are only added when full I/O discovery is enabled
(WHOLE_IO topology flag).
+ Do not set PCI devices and bridges name automatically. Vendor and device
names are already in info attributes.
+ Exporting to synthetic now ignores I/O and Misc objects.
+ XML and Synthetic export functions have moved to hwloc/export.h,
automatically included from hwloc.h.
+ Separate OS device discovery from PCI discovery. Only the latter is disabled
with --disable-pci at configure time. Both may be disabled with --disable-io.
+ The old `libpci' component name from hwloc 1.6 is not supported anymore,
only the `pci' name from hwloc 1.7 is now recognized.
+ The `linuxpci' component is now renamed into `linuxio'.
+ The HWLOC_PCI_<domain>_<bus>_LOCALCPUS environment variables are superseded
with a single HWLOC_PCI_LOCALITY where bus ranges may be specified.
+ Add HWLOC_SYNTHETIC environment variable to enforce a synthetic topology
as if hwloc_topology_set_synthetic() had been called.
+ HWLOC_COMPONENTS doesn't support xml or synthetic component attributes
anymore, they should be passed in HWLOC_XMLFILE or HWLOC_SYNTHETIC instead.
+ HWLOC_COMPONENTS takes precedence over other environment variables
for selecting components.
+ Remove the dependency on libnuma on Linux.
Version 1.11.6
--------------
* Make the Linux discovery about twice faster, especially on the CPU side,
by trying to avoid sysfs file accesses as much as possible.
* Add support for AMD Family 17h processors (Zen) SMT cores in the Linux
and x86 backends.
* Add the HWLOC_TOPOLOGY_FLAG_THISSYSTEM_ALLOWED_RESOURCES flag (and the
HWLOC_THISSYSTEM_ALLOWED_RESOURCES environment variable) for reading the
set of allowed resources from the local operating system even if the
topology was loaded from XML or synthetic.
* Fix hwloc_bitmap_set/clr_range() for infinite ranges that do not
overlap currently defined ranges in the bitmap.
* Don't reset the lstopo zoom scale when moving the X11 window.
* lstopo now has --flags for manually setting topology flags.
* hwloc_get_depth_type() returns HWLOC_TYPE_DEPTH_UNKNOWN for Misc objects.
Version 1.11.5
--------------
* Add support for Knights Mill Xeon Phi, thanks to Piotr Luc for the patch.
* Reenable distance gathering on Solaris, disabled by mistake since v1.0.
Thanks to TU Wien for the help.
* Fix hwloc_get_*obj*_inside_cpuset() functions to ignore objects with
empty CPU sets, for instance, CPU-less NUMA nodes such as KNL MCDRAM.
Thanks to Nicolas Denoyelle for the report.
* Fix XML import of multiple distance matrices.
* Add a FAQ entry about "hwloc is only a structural model, it ignores
performance models, memory bandwidth, etc.?"
Version 1.11.4
--------------
* Add MemoryMode and ClusterMode attributes in the Machine object on KNL.
Add doc/examples/get-knl-modes.c for an example of retrieving them.
Thanks to Grzegorz Andrejczuk.
* Fix Linux build with -m32 with respect to libudev.
Thanks to Paul Hargrove for reporting the issue.
* Fix build with Visual Studio 2015, thanks to Eloi Gaudry for reporting
the issue and providing the patch.
* Don't forget to display OS device children in the graphical lstopo.
* Fix a memory leak on Solaris, thanks to Bryon Gloden for the patch.
* Properly handle realloc() failures, thanks to Bryon Gloden for reporting
the issue.
* Fix lstopo crash in ascii/fig/windows outputs when some objects have a
lstopoStyle info attribute.
Version 1.11.3
--------------
* Bug fixes
+ Fix a memory leak on Linux S/390 hosts with books.
+ Fix /proc/mounts parsing on Linux by using mntent.h.
Thanks to Nathan Hjelm for reporting the issue.
+ Fix a x86 infinite loop on VMware due to the x2APIC feature being
advertised without actually being fully supported.
Thanks to Jianjun Wen for reporting the problem and testing the patch.
+ Fix the return value of hwloc_alloc() on mmap() failure.
Thanks to Hugo Brunie for reporting the issue.
+ Fix the return value of command-line tools in some error cases.
+ Do not break individual thread bindings during x86 backend discovery in a
multithreaded process. Thanks to Farouk Mansouri for the report.
+ Fix hwloc-bind --membind for CPU-less NUMA nodes.
+ Fix some corner cases in the XML export/import of application userdata.
* API Improvements
+ Add HWLOC_MEMBIND_BYNODESET flag so that membind() functions accept
either cpusets or nodesets.
+ Add hwloc_get_area_memlocation() to check where pages are actually
allocated. Only implemented on Linux for now.
- There's no _nodeset() variant, but the new flag HWLOC_MEMBIND_BYNODESET
is supported.
+ Make hwloc_obj_type_sscanf() parse back everything that may be outputted
by hwloc_obj_type_snprintf().
* Detection Improvements
+ Allow the x86 backend to add missing cache levels, so that it completes
what the Solaris backend lacks.
Thanks to Ryan Zezeski for reporting the issue.
+ Do not filter-out FibreChannel PCI adapters by default anymore.
Thanks to Matt Muggeridge for the report.
+ Add support for CUDA compute capability 6.x.
* Tools
+ Add --support to hwloc-info to list supported features, just like with
hwloc_topology_get_support().
- Also add --objects and --topology to explicitly switch between the
default modes.
+ Add --tid to let hwloc-bind operate on individual threads on Linux.
+ Add --nodeset to let hwloc-bind report memory binding as NUMA node sets.
+ hwloc-annotate and lstopo don't drop application userdata from XMLs anymore.
- Add --cu to hwloc-annotate to drop these application userdata.
+ Make the hwloc-dump-hwdata dump directory configurable through configure
options such as --runstatedir or --localstatedir.
* Misc Improvements
+ Add systemd service template contrib/systemd/hwloc-dump-hwdata.service
for launching hwloc-dump-hwdata at boot on Linux.
Thanks to Grzegorz Andrejczuk.
+ Add HWLOC_PLUGINS_BLACKLIST environment variable to prevent some plugins
from being loaded. Thanks to Alexandre Denis for the suggestion.
+ Small improvements for various Windows build systems,
thanks to Jonathan L Peyton and Marco Atzeri.
Version 1.11.2
--------------
* Improve support for Intel Knights Landing Xeon Phi on Linux:
+ Group local NUMA nodes of normal memory (DDR) and high-bandwidth memory
(MCDRAM) together through "Cluster" groups so that the local MCDRAM is
easy to find.
- See "How do I find the local MCDRAM NUMA node on Intel Knights
Landing Xeon Phi?" in the documentation.
- For uniformity across all KNL configurations, always have a NUMA node
object even if the host is UMA.
+ Fix the detection of the memory-side cache:
- Add the hwloc-dump-hwdata superuser utility to dump SMBIOS information
into /var/run/hwloc/ as root during boot, and load this dumped
information from the hwloc library at runtime.
- See "Why do I need hwloc-dump-hwdata for caches on Intel Knights
Landing Xeon Phi?" in the documentation.
Thanks to Grzegorz Andrejczuk for the patches and for the help.
* The x86 and linux backends may now be combined for discovering CPUs
through x86 CPUID and memory from the Linux kernel.
This is useful for working around buggy CPU information reported by Linux
(for instance the AMD Bulldozer/Piledriver bug below).
Combination is enabled by passing HWLOC_COMPONENTS=x86 in the environment.
* Fix L3 cache sharing on AMD Opteron 63xx (Piledriver) and 62xx (Bulldozer)
in the x86 backend. Thanks to many users who helped.
* Fix the overzealous L3 cache sharing fix added to the x86 backend in 1.11.1
for AMD Opteron 61xx (Magny-Cours) processors.
* The x86 backend may now add the info attribute Inclusive=0 or 1 to caches
it discovers, or to caches discovered by other backends earlier.
Thanks to Guillaume Beauchamp for the patch.
* Fix the management on alloc_membind() allocation failures on AIX, HP-UX
and OSF/Tru64.
* Fix spurious failures to load with ENOMEM on AIX in case of Misc objects
below PUs.
* lstopo improvements in X11 and Windows graphical mode:
+ Add + - f 1 shortcuts to manually zoom-in, zoom-out, reset the scale,
or fit the entire window.
+ Display all keyboard shortcuts in the console.
* Debug messages may be disabled at runtime by passing HWLOC_DEBUG_VERBOSE=0
in the environment when --enable-debug was passed to configure.
* Add a FAQ entry "What are these Group objects in my topology?".
Version 1.11.1
--------------
* Detection fixes
+ Hardwire the topology of Fujitsu K-computer, FX10, FX100 servers to
workaround buggy Linux kernels.
Thanks to Takahiro Kawashima and Gilles Gouaillardet.
+ Fix L3 cache information on AMD Opteron 61xx Magny-Cours processors
in the x86 backend. Thanks to Guillaume Beauchamp for the patch.
+ Detect block devices directly attached to PCI without a controller,
for instance NVMe disks. Thanks to Barry M. Tannenbaum.
+ Add the PCISlot attribute to all PCI functions instead of only the
first one.
* Miscellaneous internal fixes
+ Ignore PCI bridges that could fail assertions by reporting buggy
secondary-subordinate bus numbers
Thanks to George Bosilca for reporting the issue.
+ Fix an overzealous assertion when inserting an intermediate Group object
while Groups are totally ignored.
+ Fix a memory leak on Linux on AMD processors with dual-core compute units.
Thanks to Bob Benner.
+ Fix a memory leak on failure to load a xml diff file.
+ Fix some segfaults when inputting an invalid synthetic description.
+ Fix a segfault when plugins fail to find core symbols.
Thanks to Guy Streeter.
* Many fixes and improvements in the Windows backend:
+ Fix the discovery of more than 32 processors and multiple processor
groups. Thanks to Barry M. Tannenbaum for the help.
+ Add thread binding set support in case of multiple process groups.
+ Add thread binding get support.
+ Add get_last_cpu_location() support for the current thread.
+ Disable the unsupported process binding in case of multiple processor
groups.
+ Fix/update the Visual Studio support under contrib/windows.
Thanks to Eloi Gaudry for the help.
* Tools fixes
+ Fix a segfault when displaying logical indexes in the graphical lstopo.
Thanks to Guillaume Mercier for reporting the issue.
+ Fix lstopo linking with X11 libraries, for instance on Mac OS X.
Thanks to Scott Atchley and Pierre Ramet for reporting the issue.
+ hwloc-annotate, hwloc-diff and hwloc-patch do not drop unavailable
resources from the output anymore and those may be annotated as well.
+ Command-line tools may now import XML from the standard input with -i -.xml
+ Add missing documentation for the hwloc-info --no-icaches option.
Version 1.11.0
--------------
* API
+ Socket objects are renamed into Package to align with the terminology
used by processor vendors. The old HWLOC_OBJ_SOCKET type and "Socket"
name are still supported for backward compatibility.
+ HWLOC_OBJ_NODE is replaced with HWLOC_OBJ_NUMANODE for clarification.
HWLOC_OBJ_NODE is still supported for backward compatibility.
"Node" and "NUMANode" strings are supported as in earlier releases.
* Detection improvements
+ Add support for Intel Knights Landing Xeon Phi.
Thanks to Grzegorz Andrejczuk and Lukasz Anaczkowski.
+ Add Vendor, Model, Revision, SerialNumber, Type and LinuxDeviceID
info attributes to Block OS devices on Linux. Thanks to Vineet Pedaballe
for the help.
- Add --disable-libudev to avoid dependency on the libudev library.
+ Add "MemoryModule" Misc objects with information about DIMMs, on Linux
when privileged and when I/O is enabled.
Thanks to Vineet Pedaballe for the help.
+ Add a PCISlot attribute to PCI devices on Linux when supported to
identify the physical PCI slot where the board is plugged.
+ Add CPUStepping info attribute on x86 processors,
thanks to Thomas Röhl for the suggestion.
+ Ignore the device-tree on non-Power architectures to avoid buggy
detection on ARM. Thanks to Orion Poplawski for reporting the issue.
+ Work-around buggy Xeon E5v3 BIOS reporting invalid PCI-NUMA affinity
for the PCI links on the second processor.
+ Add support for CUDA compute capability 5.x, thanks Benjamin Worpitz.
+ Many fixes to the x86 backend
- Add L1i and fix L2/L3 type on old AMD processors without topoext support.
- Fix Intel CPU family and model numbers when basic family isn't 6 or 15.
- Fix package IDs on recent AMD processors.
- Fix misc issues due to incomplete APIC IDs on x2APIC processors.
- Avoid buggy discovery on old SGI Altix UVs with non-unique APIC IDs.
+ Gather total machine memory on NetBSD.
* Tools
+ lstopo
- Collapse identical PCI devices unless --no-collapse is given.
This avoids gigantic outputs when a PCI device contains dozens of
identical virtual functions.
- The ASCII art output is now called "ascii", for instance in
"lstopo -.ascii".
The former "txt" extension is retained for backward compatibility.
- Automatically scales graphical box width to the inner text in Cairo,
ASCII and Windows outputs.
- Add --rect to lstopo to force rectangular layout even for NUMA nodes.
- Add --restrict-flags to configure the behavior of --restrict.
- Objects may have a "Type" info attribute to specify a better type name
and display it in lstopo.
- Really export all verbose information to the given output file.
+ hwloc-annotate
- May now operate on all types of objects, including I/O.
- May now insert Misc objects in the topology.
- Do not drop instruction caches and I/O devices from the output anymore.
+ Fix lstopo path in hwloc-gather-topology after install.
* Misc
+ Fix hwloc/cudart.h for machines with multiple PCI domains,
thanks to Imre Kerr for reporting the problem.
+ Fix PCI Bridge-specific depth attribute.
+ Fix hwloc_bitmap_intersect() for two infinite bitmaps.
+ Fix some corner cases in the building of levels on large NUMA machines
with non-uniform NUMA groups and I/Os.
+ Improve the performance of object insertion by cpuset for large
topologies.
+ Prefix verbose XML import errors with the source name.
+ Improve pkg-config checks and error messages.
+ Fix excluding after a component with an argument in the HWLOC_COMPONENTS
environment variable.
* Documentation
+ Fix the recommended way in documentation and examples to allocate memory
on some node, it should use HWLOC_MEMBIND_BIND.
Thanks to Nicolas Bouzat for reporting the issue.
+ Add a "Miscellaneous objects" section in the documentation.
+ Add a FAQ entry "What happens to my topology if I disable symmetric
multithreading, hyper-threading, etc. ?" to the documentation.
Version 1.10.1
--------------
* Actually remove disallowed NUMA nodes from nodesets when the whole-system
flag isn't enabled.
* Fix the gathering of PCI domains. Thanks to James Custer for reporting
the issue and providing a patch.
* Fix the merging of identical parent and child in presence of Misc objects.
Thanks to Dave Love for reporting the issue.
* Fix some misordering of children when merging with ignore_keep_structure()
in partially allowed topologies.
* Fix an overzealous assertion in the debug code when running on a single-PU
host with I/O. Thanks to Thomas Van Doren for reporting the issue.
* Don't forget to setup NUMA node object nodesets in x86 backend (for BSDs)
and OSF/Tru64 backend.
* Fix cpuid-x86 build error with gcc -O3 on x86-32. Thanks to Thomas Van Doren
for reporting the issue.
* Fix support for future very large caches in the x86 backend.
* Fix vendor/device names for SR-IOV PCI devices on Linux.
* Fix an unlikely crash in case of buggy hierarchical distance matrix.
* Fix PU os_index on some AIX releases. Thanks to Hendryk Bockelmann and
Erik Schnetter for helping debugging.
* Fix hwloc_bitmap_isincluded() in case of infinite sets.
* Change hwloc-ls.desktop into a lstopo.desktop and only install it if
lstopo is built with Cairo/X11 support. It cannot work with a non-graphical
lstopo or hwloc-ls.
* Add support for the renaming of Socket into Package in future releases.
* Add support for the replacement of HWLOC_OBJ_NODE with HWLOC_OBJ_NUMANODE
in future releases.
* Clarify the documentation of distance matrices in hwloc.h and in the manpage
of the hwloc-distances. Thanks to Dave Love for the suggestion.
* Improve some error messages by displaying more information about the
hwloc library in use.
* Document how to deal with the ABI break when upgrading to the upcoming 2.0
See "How do I handle ABI breaks and API upgrades ?" in the FAQ.
Version 1.10.0
--------------
* 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.
+ 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.
+ The plugin ABI has changed, this release will not load plugins
built against previous hwloc releases.
Version 1.9.1
-------------
* Fix a crash when the PCI locality is invalid. Attach to the root object
instead. Thanks to Nicolas Denoyelle for reporting the issue.
* Fix -f in lstopo manpage. Thanks to Jirka Hladky for reporting the issue.
* Fix hwloc_obj_type_sscanf() and others when strncasecmp() is not properly
available. Thanks to Nick Papior Andersen for reporting the problem.
* Mark Linux file descriptors as close-on-exec to avoid leaks on exec.
* Fix some minor memory leaks.
Version 1.9.0
-------------
* API
+ Add hwloc_obj_type_sscanf() to extend hwloc_obj_type_of_string() with
type-specific attributes such as Cache/Group depth and Cache type.
hwloc_obj_type_of_string() is moved to hwloc/deprecated.h.
+ Add hwloc_linux_get_tid_last_cpu_location() for retrieving the
last CPU where a Linux thread given by TID ran.
+ Add hwloc_distrib() to extend the old hwloc_distribute[v]() functions.
hwloc_distribute[v]() is moved to hwloc/deprecated.h.
+ Don't mix total and local memory when displaying verbose object attributes
with hwloc_obj_attr_snprintf() or in lstopo.
* Backends
+ Add CPUVendor, CPUModelNumber and CPUFamilyNumber info attributes for
x86, ia64 and Xeon Phi sockets on Linux, to extend the x86-specific
support added in v1.8.1. Requested by Ralph Castain.
+ Add many CPU- and Platform-related info attributes on ARM and POWER
platforms, in the Machine and Socket objects.
+ Add CUDA info attributes describing the number of multiprocessors and
cores and the size of the global, shared and L2 cache memories in CUDA
OS devices.
+ Add OpenCL info attributes describing the number of compute units and
the global memory size in OpenCL OS devices.
+ The synthetic backend now accepts extended types such as L2Cache, L1i or
Group3. lstopo also exports synthetic strings using these extended types.
* Tools
+ lstopo
- Do not overwrite output files by default anymore.
Pass -f or --force to enforce it.
- Display OpenCL, CUDA and Xeon Phi numbers of cores and memory sizes
in the graphical output.
- Fix export to stdout when specifying a Cairo-based output type
with --of.
+ hwloc-ps
- Add -e or --get-last-cpu-location to report where processes/threads
run instead of where they are bound.
- Report locations as likely-more-useful objects such as Cores or Sockets
instead of Caches when possible.
+ hwloc-bind
- Fix failure on Windows when not using --pid.
- Add -e as a synonym to --get-last-cpu-location.
+ hwloc-distrib
- Add --reverse to distribute using last objects first and singlify
into last bits first. Thanks to Jirka Hladky for the suggestion.
+ hwloc-info
- Report unified caches when looking for data or instruction cache
ancestor objects.
* Misc
+ Add experimental Visual Studio support under contrib/windows.
Thanks to Eloi Gaudry for his help and for providing the first draft.
+ Fix some overzealous assertions and warnings about the ordering of
objects on a level with respect to cpusets. The ordering is only
guaranteed for complete cpusets (based on the first bit in sets).
+ Fix some memory leaks when importing xml diffs and when exporting a
"too complex" entry.
Version 1.8.1
-------------
* Fix the cpuid code on Windows 64bits so that the x86 backend gets
enabled as expected and can populate CPU information.
Thanks to Robin Scher for reporting the problem.
* Add CPUVendor/CPUModelNumber/CPUFamilyNumber attributes when running
on x86 architecture. Thanks to Ralph Castain for the suggestion.
* Work around buggy BIOS reporting duplicate NUMA nodes on Linux.
Thanks to Jeff Becker for reporting the problem and testing the patch.
* Add a name to the lstopo graphical window. Thanks to Michael Prokop
for reporting the issue.
Version 1.8.0
-------------
* New components
+ Add the "linuxpci" component that always works on Linux even when
libpciaccess and libpci aren't available (and even with a modified
file-system root). By default the old "pci" component runs first
because "linuxpci" lacks device names (obj->name is always NULL).
* API
+ Add the topology difference API in hwloc/diff.h for manipulating
many similar topologies.
+ Add hwloc_topology_dup() for duplicating an entire topology.
+ hwloc.h and hwloc/helper.h have been reorganized to clarify the
documentation sections. The actual inline code has moved out of hwloc.h
into the new hwloc/inlines.h.
+ Deprecated functions are now in hwloc/deprecated.h, and not in the
official documentation anymore.
* Tools
+ Add hwloc-diff and hwloc-patch tools together with the new diff API.
+ Add hwloc-compress-dir to (de)compress an entire directory of XML files
using hwloc-diff and hwloc-patch.
+ Object colors in the graphical output of lstopo may be changed by adding
a "lstopoStyle" info attribute. See CUSTOM COLORS in the lstopo(1) manpage
for details. Thanks to Jirka Hladky for discussing the idea.
+ hwloc-gather-topology may now gather I/O-related files on Linux when
--io is given. Only the linuxpci component supports discovering I/O
objects from these extended tarballs.
+ hwloc-annotate now supports --ri to remove/replace info attributes with
a given name.
+ hwloc-info supports "root" and "all" special locations for dumping
information about the root object.
+ lstopo now supports --append-legend to append custom lines of text
to the legend in the graphical output. Thanks to Jirka Hladky for
discussing the idea.
+ hwloc-calc and friends have a more robust parsing of locations given
on the command-line and they report useful error messages about it.
+ Add --whole-system to hwloc-bind, hwloc-calc, hwloc-distances and
hwloc-distrib, and add --restrict to hwloc-bind for uniformity among
tools.
* Misc
+ Calling hwloc_topology_load() or hwloc_topology_set_*() on an already
loaded topology now returns an error (deprecated since release 1.6.1).
+ Fix the initialisation of cpusets and nodesets in Group objects added
when inserting PCI hostbridges.
+ Never merge Group objects that were added explicitly by the user with
hwloc_custom_insert_group_object_by_parent().
+ Add a sanity check during dynamic plugin loading to prevent some
crashes when hwloc is dynamically loaded by another plugin mechanisms.
+ Add --with-hwloc-plugins-path to specify the install/load directories
of plugins.
+ Add the MICSerialNumber info attribute to the root object when running
hwloc inside a Xeon Phi to match the same attribute in the MIC OS device
when running in the host.
Version 1.7.2
-------------
* Do not create invalid block OS devices on very old Linux kernel such
as RHEL4 2.6.9.
* Fix PCI subvendor/device IDs.
* Fix the management of Misc objects inserted by parent.
Thanks to Jirka Hladky for reporting the problem.
* Add a Port<n>State into attribute to OpenFabrics OS devices.
* Add a MICSerialNumber info attribute to Xeon PHI/MIC OS devices.
* Improve verbose error messages when failing to load from XML.
Version 1.7.1
-------------
* Fix a failed assertion in the distance grouping code when loading a XML
file that already contains some groups.
Thanks to Laercio Lima Pilla for reporting the problem.
* Remove unexpected Group objects when loading XML topologies with I/O
objects and NUMA distances.
Thanks to Elena Elkina for reporting the problem and testing patches.
* Fix PCI link speed discovery when using libpciaccess.
* Fix invalid libpciaccess virtual function device/vendor IDs when using
SR-IOV PCI devices on Linux.
* Fix GL component build with old NVCtrl releases.
Thanks to Jirka Hladky for reporting the problem.
* Fix embedding breakage caused by libltdl.
Thanks to Pavan Balaji for reporting the problem.
* Always use the system-wide libltdl instead of shipping one inside hwloc.
* Document issues when enabling plugins while embedding hwloc in another
project, in the documentation section Embedding hwloc in Other Software.
* Add a FAQ entry "How to get useful topology information on NetBSD?"
in the documentation.
* Somes fixes in the renaming code for embedding.
* Miscellaneous minor build fixes.
Version 1.7.0
-------------
* New operating system backends
+ Add BlueGene/Q compute node kernel (CNK) support. See the FAQ in the
documentation for details. Thanks to Jeff Hammond, Christopher Samuel
and Erik Schnetter for their help.
+ Add NetBSD support, thanks to Aleksej Saushev.
* New I/O device discovery
+ Add co-processor OS devices such as "mic0" for Intel Xeon Phi (MIC)
on Linux. Thanks to Jerome Vienne for helping.
+ Add co-processor OS devices such as "cuda0" for NVIDIA CUDA-capable GPUs.
+ Add co-processor OS devices such as "opencl0d0" for OpenCL GPU devices
on the AMD OpenCL implementation.
+ Add GPU OS devices such as ":0.0" for NVIDIA X11 displays.
+ Add GPU OS devices such as "nvml0" for NVIDIA GPUs.
Thanks to Marwan Abdellah and Stefan Eilemann for helping.
These new OS devices have some string info attributes such as CoProcType,
GPUModel, etc. to better identify them.
See the I/O Devices and Attributes documentation sections for details.
* New components
+ Add the "opencl", "cuda", "nvml" and "gl" components for I/O device
discovery.
+ "nvml" also improves the discovery of NVIDIA GPU PCIe link speed.
All of these new components may be built as plugins. They may also be
disabled entirely by passing --disable-opencl/cuda/nvml/gl to configure.
See the I/O Devices, Components and Plugins, and FAQ documentation
sections for details.
* API
+ Add hwloc_topology_get_flags().
+ Add hwloc/plugins.h for building external plugins.
See the Adding new discovery components and plugins section.
* Interoperability
+ Add hwloc/opencl.h, hwloc/nvml.h, hwloc/gl.h and hwloc/intel-mic.h
to retrieve the locality of OS devices that correspond to AMD OpenCL
GPU devices or indexes, to NVML devices or indexes, to NVIDIA X11
displays, or to Intel Xeon Phi (MIC) device indexes.
+ Add new helpers in hwloc/cuda.h and hwloc/cudart.h to convert
between CUDA devices or indexes and hwloc OS devices.
+ Add hwloc_ibv_get_device_osdev() and clarify the requirements
of the OpenFabrics Verbs helpers in hwloc/openfabrics-verbs.h.
* Tools
+ hwloc-info is not only a synonym of lstopo -s anymore, it also
dumps information about objects given on the command-line.
* Documentation
+ Add a section "Existing components and plugins".
+ Add a list of common OS devices in section "Software devices".
+ Add a new FAQ entry "Why is lstopo slow?" about lstopo slowness
issues because of GPUs.
+ Clarify the documentation of inline helpers in hwloc/myriexpress.h
and hwloc/openfabrics-verbs.h.
* Misc
+ Improve cache detection on AIX.
+ The HWLOC_COMPONENTS variable now excludes the components whose
names are prefixed with '-'.
+ lstopo --ignore PU now works when displaying the topology in
graphical and textual mode (not when exporting to XML).
+ Make sure I/O options always appear in lstopo usage, not only when
using pciutils/libpci.
+ Remove some unneeded Linux specific includes from some interoperability
headers.
+ Fix some inconsistencies in hwloc-distrib and hwloc-assembler-remote
manpages. Thanks to Guy Streeter for the report.
+ Fix a memory leak on AIX when getting memory binding.
+ Fix many small memory leaks on Linux.
+ The `libpci' component is now called `pci' but the old name is still
accepted in the HWLOC_COMPONENTS variable for backward compatibility.
Version 1.6.2
-------------
* Use libpciaccess instead of pciutils/libpci by default for I/O discovery.
pciutils/libpci is only used if --enable-libpci is given to configure
because its GPL license may taint hwloc. See the Installation section
in the documentation for details.
* Fix get_cpubind on Solaris when bound to a single PU with
processor_bind(). Thanks to Eugene Loh for reporting the problem
and providing a patch.
Version 1.6.1
-------------
* Fix some crash or buggy detection in the x86 backend when Linux
cgroups/cpusets restrict the available CPUs.
* Fix the pkg-config output with --libs --static.
Thanks to Erik Schnetter for reporting one of the problems.
* Fix the output of hwloc-calc -H --hierarchical when using logical
indexes in the output.
* Calling hwloc_topology_load() multiple times on the same topology
is officially deprecated. hwloc will warn in such cases.
* Add some documentation about existing plugins/components, package
dependencies, and I/O devices specification on the command-line.
Version 1.6.0
-------------
* Major changes
+ Reorganize the backend infrastructure to support dynamic selection
of components and dynamic loading of plugins. For details, see the
new documentation section Components and plugins.
- The HWLOC_COMPONENTS variable lets one replace the default discovery
components.
- Dynamic loading of plugins may be enabled with --enable-plugins
(except on AIX and Windows). It will build libxml2 and libpci
support as separated modules. This helps reducing the dependencies
of the core hwloc library when distributed as a binary package.
* Backends
+ Add CPUModel detection on Darwin and x86/FreeBSD.
Thanks to Robin Scher for providing ways to implement this.
+ The x86 backend now adds CPUModel info attributes to socket objects
created by other backends that do not natively support this attribute.
+ Fix detection on FreeBSD in case of cpuset restriction. Thanks to
Sebastian Kuzminsky for reporting the problem.
* XML
+ Add hwloc_topology_set_userdata_import/export_callback(),
hwloc_export_obj_userdata() and _userdata_base64() to let
applications specify how to save/restore the custom data they placed
in the userdata private pointer field of hwloc objects.
* Tools
+ Add hwloc-annotate program to add string info attributes to XML
topologies.
+ Add --pid-cmd to hwloc-ps to append the output of a command to each
PID line. May be used for showing Open MPI process ranks, see the
hwloc-ps(1) manpage for details.
+ hwloc-bind now exits with an error if binding fails; the executable
is not launched unless binding suceeeded or --force was given.
+ Add --quiet to hwloc-calc and hwloc-bind to hide non-fatal error
messages.
+ Fix command-line pid support in windows tools.
+ All programs accept --verbose as a synonym to -v.
* Misc
+ Fix some DIR descriptor leaks on Linux.
+ Fix I/O device lists when some were filtered out after a XML import.
+ Fix the removal of I/O objects when importing a I/O-enabled XML topology
without any I/O topology flag.
+ When merging objects with HWLOC_IGNORE_TYPE_KEEP_STRUCTURE or
lstopo --merge, compare object types before deciding which one of two
identical object to remove (e.g. keep sockets in favor of caches).
+ Add some GUID- and LID-related info attributes to OpenFabrics
OS devices.
+ Only add CPUType socket attributes on Solaris/Sparc. Other cases
don't report reliable information (Solaris/x86), and a replacement
is available as the Architecture string info in the Machine object.
+ Add missing Backend string info on Solaris in most cases.
+ Document object attributes and string infos in a new Attributes
section in the documentation.
+ Add a section about Synthetic topologies in the documentation.
Version 1.5.2 (some of these changes are in v1.6.2 but not in v1.6)
-------------
* Use libpciaccess instead of pciutils/libpci by default for I/O discovery.
pciutils/libpci is only used if --enable-libpci is given to configure
because its GPL license may taint hwloc. See the Installation section
in the documentation for details.
* Fix get_cpubind on Solaris when bound to a single PU with
processor_bind(). Thanks to Eugene Loh for reporting the problem
and providing a patch.
* Fix some DIR descriptor leaks on Linux.
* Fix I/O device lists when some were filtered out after a XML import.
* Add missing Backend string info on Solaris in most cases.
* Fix the removal of I/O objects when importing a I/O-enabled XML topology
without any I/O topology flag.
* Fix the output of hwloc-calc -H --hierarchical when using logical
indexes in the output.
* Fix the pkg-config output with --libs --static.
Thanks to Erik Schnetter for reporting one of the problems.
Version 1.5.1
-------------
* Fix block OS device detection on Linux kernel 3.3 and later.
Thanks to Guy Streeter for reporting the problem and testing the fix.
* Fix the cpuid code in the x86 backend (for FreeBSD). Thanks to
Sebastian Kuzminsky for reporting problems and testing patches.
* Fix 64bit detection on FreeBSD.
* Fix some corner cases in the management of the thissystem flag with
respect to topology flags and environment variables.
* Fix some corner cases in command-line parsing checks in hwloc-distrib
and hwloc-distances.
* Make sure we do not miss some block OS devices on old Linux kernels
when a single PCI device has multiple IDE hosts/devices behind it.
* Do not disable I/O devices or instruction caches in hwloc-assembler output.
Version 1.5.0
-------------
* Backends
+ Do not limit the number of processors to 1024 on Solaris anymore.
+ Gather total machine memory on FreeBSD. Thanks to Cyril Roelandt.
+ XML topology files do not depend on the locale anymore. Float numbers
such as NUMA distances or PCI link speeds now always use a dot as a
decimal separator.
+ Add instruction caches detection on Linux, AIX, Windows and Darwin.
+ Add get_last_cpu_location() support for the current thread on AIX.
+ Support binding on AIX when threads or processes were bound with
bindprocessor(). Thanks to Hendryk Bockelmann for reporting the issue
and testing patches, and to Farid Parpia for explaining the binding
interfaces.
+ Improve AMD topology detection in the x86 backend (for FreeBSD) using
the topoext feature.
* API
+ Increase HWLOC_API_VERSION to 0x00010500 so that API changes may be
detected at build-time.
+ Add a cache type attribute describind Data, Instruction and Unified
caches. Caches with different types but same depth (for instance L1d
and L1i) are placed on different levels.
+ Add hwloc_get_cache_type_depth() to retrieve the hwloc level depth of
of the given cache depth and type, for instance L1i or L2.
It helps disambiguating the case where hwloc_get_type_depth() returns
HWLOC_TYPE_DEPTH_MULTIPLE.
+ Instruction caches are ignored unless HWLOC_TOPOLOGY_FLAG_ICACHES is
passed to hwloc_topology_set_flags() before load.
+ Add hwloc_ibv_get_device_osdev_by_name() OpenFabrics helper in
openfabrics-verbs.h to find the hwloc OS device object corresponding to
an OpenFabrics device.
* Tools
+ Add lstopo-no-graphics, a lstopo built without graphical support to
avoid dependencies on external libraries such as Cairo and X11. When
supported, graphical outputs are only available in the original lstopo
program.
- Packagers splitting lstopo and lstopo-no-graphics into different
packages are advised to use the alternatives system so that lstopo
points to the best available binary.
+ Instruction caches are enabled in lstopo by default. Use --no-icaches
to disable them.
+ Add -t/--threads to show threads in hwloc-ps.
* Removal of obsolete components
+ Remove the old cpuset interface (hwloc/cpuset.h) which is deprecated and
superseded by the bitmap API (hwloc/bitmap.h) since v1.1.
hwloc_cpuset and nodeset types are still defined, but all hwloc_cpuset_*
compatibility wrappers are now gone.
+ Remove Linux libnuma conversion helpers for the deprecated and
broken nodemask_t interface.
+ Remove support for "Proc" type name, it was superseded by "PU" in v1.0.
+ Remove hwloc-mask symlinks, it was replaced by hwloc-calc in v1.0.
* Misc
+ Fix PCIe 3.0 link speed computation.
+ Non-printable characters are dropped from strings during XML export.
+ Fix importing of escaped characters with the minimalistic XML backend.
+ Assert hwloc_is_thissystem() in several I/O related helpers.
+ Fix some memory leaks in the x86 backend for FreeBSD.
+ Minor fixes to ease native builds on Windows.
+ Limit the number of retries when operating on all threads within a
process on Linux if the list of threads is heavily getting modified.
Version 1.4.3
-------------
* This release is only meant to fix the pciutils license issue when upgrading
to hwloc v1.5 or later is not possible. It contains several other minor
fixes but ignores many of them that are only in v1.5 or later.
* Use libpciaccess instead of pciutils/libpci by default for I/O discovery.
pciutils/libpci is only used if --enable-libpci is given to configure
because its GPL license may taint hwloc. See the Installation section
in the documentation for details.
* Fix PCIe 3.0 link speed computation.
* Fix importing of escaped characters with the minimalistic XML backend.
* Fix a memory leak in the x86 backend.
Version 1.4.2
-------------
* Fix build on Solaris 9 and earlier when fabsf() is not a compiler
built-in. Thanks to Igor Galić for reporting the problem.
* Fix support for more than 32 processors on Windows. Thanks to Hartmut
Kaiser for reporting the problem.
* Fix process-wide binding and cpulocation routines on Linux when some
threads disappear in the meantime. Thanks to Vlad Roubtsov for reporting
the issue.
* Make installed scripts executable. Thanks to Jirka Hladky for reporting
the problem.
* Fix libtool revision management when building for Windows. This fix was
also released as hwloc v1.4.1.1 Windows builds. Thanks to Hartmut Kaiser
for reporting the problem.
* Fix the __hwloc_inline keyword in public headers when compiling with a
C++ compiler.
* Add Port info attribute to network OS devices inside OpenFabrics PCI
devices so as to identify which interface corresponds to which port.
* Document requirements for interoperability helpers: I/O devices discovery
is required for some of them; the topology must match the current host
for most of them.
Version 1.4.1
-------------
* This release contains all changes from v1.3.2.
* Fix hwloc_alloc_membind, thanks Karl Napf for reporting the issue.
* Fix memory leaks in some get_membind() functions.
* Fix helpers converting from Linux libnuma to hwloc (hwloc/linux-libnuma.h)
in case of out-of-order NUMA node ids.
* Fix some overzealous assertions in the distance grouping code.
* Workaround BIOS reporting empty I/O locality in CUDA and OpenFabrics
helpers on Linux. Thanks to Albert Solernou for reporting the problem.
* Install a valgrind suppressions file hwloc-valgrind.supp (see the FAQ).
* Fix memory binding documentation. Thanks to Karl Napf for reporting the
issues.
Version 1.4.0 (does not contain all v1.3.2 changes)
-------------
* Major features
+ Add "custom" interface and "assembler" tools to build multi-node
topology. See the Multi-node Topologies section in the documentation
for details.
* Interface improvements
+ Add symmetric_subtree object attribute to ease assumptions when consulting
regular symmetric topologies.
+ Add a CPUModel and CPUType info attribute to Socket objects on Linux
and Solaris.
+ Add hwloc_get_obj_index_inside_cpuset() to retrieve the "logical" index
of an object within a subtree of the topology.
+ Add more NVIDIA CUDA helpers in cuda.h and cudart.h to find hwloc objects
corresponding to CUDA devices.
* Discovery improvements
+ Add a group object above partial distance matrices to make sure
the matrices are available in the final topology, except when this
new object would contradict the existing hierarchy.
+ Grouping by distances now also works when loading from XML.
+ Fix some corner cases in object insertion, for instance when dealing
with NUMA nodes without any CPU.
* Backends
+ Implement hwloc_get_area_membind() on Linux.
+ Honor I/O topology flags when importing from XML.
+ Further improve XML-related error checking and reporting.
+ Hide synthetic topology error messages unless HWLOC_SYNTHETIC_VERBOSE=1.
* Tools
+ Add synthetic exporting of symmetric topologies to lstopo.
+ lstopo --horiz and --vert can now be applied to some specific object types.
+ lstopo -v -p now displays distance matrices with physical indexes.
+ Add hwloc-distances utility to list distances.
* Documentation
+ Fix and/or document the behavior of most inline functions in hwloc/helper.h
when the topology contains some I/O or Misc objects.
+ Backend documentation enhancements.
* Bug fixes
+ Fix missing last bit in hwloc_linux_get_thread_cpubind().
Thanks to Carolina Gómez-Tostón Gutiérrez for reporting the issue.
+ Fix FreeBSD build without cpuid support.
+ Fix several Windows build issues.
+ Fix inline keyword definition in public headers.
+ Fix dependencies in the embedded library.
+ Improve visibility support detection. Thanks to Dave Love for providing
the patch.
+ Remove references to internal symbols in the tools.