56 #include <hwloc/autogen/config.h> 57 #include <sys/types.h> 65 #include <hwloc/rename.h> 71 #include <hwloc/bitmap.h> 91 #define HWLOC_API_VERSION 0x00020000 100 #define HWLOC_COMPONENT_ABI 5 171 #define HWLOC_OBJ_TYPE_MIN HWLOC_OBJ_MACHINE 357 #define HWLOC_UNKNOWN_INDEX (unsigned)-1 579 unsigned short vendor_id, device_id, subvendor_id, subdevice_id;
621 struct hwloc_topology;
795 static __hwloc_inline
int 807 static __hwloc_inline
int 827 static __hwloc_inline
int 834 static __hwloc_inline hwloc_obj_t
846 static __hwloc_inline hwloc_obj_t
853 static __hwloc_inline hwloc_obj_t
862 static __hwloc_inline hwloc_obj_t
917 hwloc_obj_t obj,
const char * __hwloc_restrict separator,
987 static __hwloc_inline
const char *
1168 #ifdef hwloc_thread_t 1179 #ifdef hwloc_thread_t 1630 static __hwloc_inline
void *
2228 #include <hwloc/helper.h> 2231 #include <hwloc/inlines.h> 2234 #include <hwloc/export.h> 2237 #include <hwloc/distances.h> 2240 #include <hwloc/diff.h> 2243 #include <hwloc/deprecated.h> unsigned char get_thisthread_last_cpu_location
Definition: hwloc.h:1911
hwloc_restrict_flags_e
Flags to be given to hwloc_topology_restrict().
Definition: hwloc.h:2084
unsigned char set_thread_cpubind
Definition: hwloc.h:1903
int hwloc_topology_set_io_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all I/O object types.
unsigned char get_thread_cpubind
Definition: hwloc.h:1905
Operating system network device. For instance the "eth0" interface on Linux.
Definition: hwloc.h:295
unsigned arity
Number of normal children. Memory, Misc and I/O children are not listed here but rather in their dedi...
Definition: hwloc.h:403
static hwloc_obj_t hwloc_get_next_obj_by_depth(hwloc_topology_t topology, int depth, hwloc_obj_t prev)
Returns the next object at depth depth.
Assume that the selected backend provides the topology for the system on which we are running...
Definition: hwloc.h:1822
No object of given type exists in the topology.
Definition: hwloc.h:756
unsigned char revision
Definition: hwloc.h:580
int symmetric_subtree
Set if the subtree of normal objects below this object is symmetric, which means all normal children ...
Definition: hwloc.h:412
Level 1 Data (or Unified) Cache.
Definition: hwloc.h:197
Migrate existing allocated memory. If the memory cannot be migrated and the HWLOC_MEMBIND_STRICT flag...
Definition: hwloc.h:1389
hwloc_const_bitmap_t hwloc_const_cpuset_t
A non-modifiable hwloc_cpuset_t.
Definition: hwloc.h:137
enum hwloc_obj_cache_type_e hwloc_obj_cache_type_t
Cache type.
int hwloc_topology_set_xmlbuffer(hwloc_topology_t restrict topology, const char *restrict buffer, int size)
Enable XML based topology using a memory buffer (instead of a file, as with hwloc_topology_set_xml())...
int hwloc_set_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Set the default memory binding policy of the specified process to prefer the NUMA node(s) specified b...
int hwloc_topology_set_xml(hwloc_topology_t restrict topology, const char *restrict xmlpath)
Enable XML-file based topology.
unsigned char firsttouch_membind
Definition: hwloc.h:1939
hwloc_bitmap_t hwloc_nodeset_t
A node set is a bitmap whose bits are set according to NUMA memory node physical OS indexes...
Definition: hwloc.h:152
enum hwloc_obj_osdev_type_e hwloc_obj_osdev_type_t
Type of a OS device.
unsigned hwloc_get_nbobjs_by_depth(hwloc_topology_t topology, int depth)
Returns the width of level at depth depth.
hwloc_uint64_t size
Size of cache in bytes.
Definition: hwloc.h:560
PCI Device specific Object Attributes.
Definition: hwloc.h:575
float linkspeed
Definition: hwloc.h:581
unsigned short domain
Definition: hwloc.h:576
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
unsigned long hwloc_topology_get_flags(hwloc_topology_t topology)
Get OR'ed flags of a topology.
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:626
Array of local memory page types, NULL if no local memory and page_types is 0.
Definition: hwloc.h:552
hwloc_get_type_depth_e
Definition: hwloc.h:755
unsigned char set_thisproc_cpubind
Definition: hwloc.h:1891
PCI-side of a bridge.
Definition: hwloc.h:285
unsigned char set_thisthread_membind
Definition: hwloc.h:1929
Ignore all objects of this type.
Definition: hwloc.h:1998
int hwloc_topology_set_all_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all object types.
int hwloc_compare_types(hwloc_obj_type_t type1, hwloc_obj_type_t type2)
Compare the depth of two object types.
const struct hwloc_bitmap_s * hwloc_const_bitmap_t
a non-modifiable hwloc_bitmap_t
Definition: bitmap.h:57
Physical package. The physical package that usually gets inserted into a socket on the motherboard...
Definition: hwloc.h:179
Level 1 instruction Cache (filtered out by default).
Definition: hwloc.h:203
Reset the memory allocation policy to the system default. Depending on the operating system...
Definition: hwloc.h:1310
int hwloc_topology_set_icache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all instruction cache object types.
Objects of given type exist at different depth in the topology (only for Groups). ...
Definition: hwloc.h:757
unsigned char get_thisthread_membind
Definition: hwloc.h:1931
Flags describing actual PU binding support for this topology.
Definition: hwloc.h:1889
int hwloc_get_membind(hwloc_topology_t topology, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the current process or thread...
char * name
Info name.
Definition: hwloc.h:609
int hwloc_topology_dup(hwloc_topology_t *newtopology, hwloc_topology_t oldtopology)
Duplicate a topology.
unsigned io_arity
Number of I/O children. These children are listed in io_first_child.
Definition: hwloc.h:435
unsigned char get_proc_membind
Definition: hwloc.h:1927
OS Device specific Object Attributes.
Definition: hwloc.h:599
static hwloc_obj_t hwloc_get_root_obj(hwloc_topology_t topology)
Returns the top-object of the topology-tree.
hwloc_obj_osdev_type_t type
Definition: hwloc.h:600
unsigned char get_proc_cpubind
Definition: hwloc.h:1897
unsigned char alloc_membind
Definition: hwloc.h:1937
static void * hwloc_alloc_membind_policy(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Allocate some memory on NUMA memory nodes specified by set.
void * hwloc_alloc_membind(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Allocate some memory on NUMA memory nodes specified by set.
enum hwloc_obj_bridge_type_e hwloc_obj_bridge_type_t
Type of one side (upstream or downstream) of an I/O bridge.
Only ignore objects if their entire level does not bring any structure.
Definition: hwloc.h:2012
unsigned char get_thisproc_last_cpu_location
Definition: hwloc.h:1907
int hwloc_get_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the specified process.
unsigned char interleave_membind
Definition: hwloc.h:1943
Remove all objects that became CPU-less. By default, only objects that contain no PU and no memory ar...
Definition: hwloc.h:2089
struct hwloc_topology_cpubind_support * cpubind
Definition: hwloc.h:1960
struct hwloc_obj * prev_sibling
Previous object below the same parent (inside the same list of children).
Definition: hwloc.h:400
Virtual depth for Misc object.
Definition: hwloc.h:762
Set of flags describing actual support for this topology.
Definition: hwloc.h:1958
struct hwloc_topology_membind_support * membind
Definition: hwloc.h:1961
For each page bound with this policy, by next time it is touched (and next time only), it is moved from its current location to the local NUMA node of the thread where the memory reference occurred (if it needs to be moved at all).
Definition: hwloc.h:1341
static const char * hwloc_obj_get_info_by_name(hwloc_obj_t obj, const char *name)
Search the given key name in object infos and return the corresponding value.
int hwloc_get_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_cpuset_t set, int flags)
Get the current physical binding of thread tid.
Flags describing actual discovery support for this topology.
Definition: hwloc.h:1875
hwloc_obj_cache_type_e
Cache type.
Definition: hwloc.h:276
int hwloc_topology_restrict(hwloc_topology_t restrict topology, hwloc_const_cpuset_t cpuset, unsigned long flags)
Restrict the topology to the given CPU set.
unsigned short class_id
Definition: hwloc.h:578
int hwloc_free(hwloc_topology_t topology, void *addr, size_t len)
Free memory that was previously allocated by hwloc_alloc() or hwloc_alloc_membind().
unsigned char set_proc_cpubind
Definition: hwloc.h:1895
Virtual depth for bridge object level.
Definition: hwloc.h:759
unsigned char get_thisthread_cpubind
Definition: hwloc.h:1901
hwloc_nodeset_t nodeset
NUMA nodes covered by this object or containing this object.
Definition: hwloc.h:485
void hwloc_topology_destroy(hwloc_topology_t topology)
Terminate and free a topology context.
unsigned char set_thisthread_cpubind
Definition: hwloc.h:1899
struct hwloc_topology_discovery_support * discovery
Definition: hwloc.h:1959
hwloc_obj_type_t
Definition: hwloc.h:172
Detect the whole system, ignore reservations.
Definition: hwloc.h:1802
hwloc_const_bitmap_t hwloc_const_nodeset_t
A non-modifiable hwloc_nodeset_t.
Definition: hwloc.h:155
Operating system co-processor device. For instance "mic0" for a Xeon Phi (MIC) on Linux...
Definition: hwloc.h:302
hwloc_obj_t hwloc_topology_alloc_group_object(hwloc_topology_t topology)
Allocate a Group object to insert later with hwloc_topology_insert_group_object().
int associativity
Ways of associativity, -1 if fully associative, 0 if unknown.
Definition: hwloc.h:563
unsigned hwloc_get_api_version(void)
Indicate at runtime which hwloc API version was used at build time.
static hwloc_obj_t hwloc_get_next_obj_by_type(hwloc_topology_t topology, hwloc_obj_type_t type, hwloc_obj_t prev)
Returns the next object of type type.
unsigned char subordinate_bus
Definition: hwloc.h:592
int hwloc_topology_abi_check(hwloc_topology_t topology)
Verify that the topology is compatible with the current hwloc library.
int hwloc_set_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t set, int flags)
Bind a process pid on cpus given in physical bitmap set.
int hwloc_get_proc_last_cpu_location(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags)
Get the last physical CPU where a process ran.
Move I/O objects to ancestors if their parents are removed during restriction. If this flag is not se...
Definition: hwloc.h:2101
struct hwloc_obj * first_child
First normal child.
Definition: hwloc.h:408
unsigned infos_count
Size of infos array.
Definition: hwloc.h:522
Consider the bitmap argument as a nodeset.
Definition: hwloc.h:1413
hwloc_obj_cache_type_t type
Cache type.
Definition: hwloc.h:565
unsigned linesize
Cache-line size in bytes. 0 if unknown.
Definition: hwloc.h:562
struct hwloc_obj * memory_first_child
First Memory child. NUMA nodes are listed here (memory_arity and memory_first_child) instead of in th...
Definition: hwloc.h:426
int hwloc_set_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_const_cpuset_t set, int flags)
Bind a thread thread on cpus given in physical bitmap set.
Set policy for a specific thread of the current process. This flag is mutually exclusive with HWLOC_M...
Definition: hwloc.h:1375
unsigned char bind_membind
Definition: hwloc.h:1941
void hwloc_topology_set_userdata(hwloc_topology_t topology, const void *userdata)
Set the topology-specific userdata pointer.
Move Misc objects to ancestors if their parents are removed during restriction. If this flag is not s...
Definition: hwloc.h:2095
int hwloc_topology_set_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e filter)
Set the filtering for the given object type.
void * hwloc_topology_get_userdata(hwloc_topology_t topology)
Retrieve the topology-specific userdata pointer.
hwloc_nodeset_t complete_nodeset
The complete NUMA node set of this object,.
Definition: hwloc.h:505
int hwloc_topology_get_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e *filter)
Get the current filtering for the given object type.
NUMA node. An object that contains memory that is directly and byte-accessible to the host processors...
Definition: hwloc.h:220
Processing Unit, or (Logical) Processor. An execution unit (may share a core with some other logical ...
Definition: hwloc.h:188
Machine. The root object type. A set of processors and memory with cache coherency.
Definition: hwloc.h:173
Operating system openfabrics device. For instance the "mlx4_0" InfiniBand HCA, or "hfi1_0" Omni-Path ...
Definition: hwloc.h:297
Bind current thread of current process.
Definition: hwloc.h:1083
int hwloc_get_last_cpu_location(hwloc_topology_t topology, hwloc_cpuset_t set, int flags)
Get the last physical CPU where the current process or thread ran.
unsigned char func
Definition: hwloc.h:577
unsigned depth
Definition: hwloc.h:596
const char * hwloc_obj_type_string(hwloc_obj_type_t type)
Return a constant stringified object type.
struct hwloc_obj * hwloc_obj_t
Convenience typedef; a pointer to a struct hwloc_obj.
Definition: hwloc.h:539
hwloc_type_filter_e
Type filtering flags.
Definition: hwloc.h:1984
hwloc_obj_type_t hwloc_get_depth_type(hwloc_topology_t topology, int depth)
Returns the type of objects at depth depth.
Allocate memory on the specified nodes.
Definition: hwloc.h:1325
hwloc_obj_bridge_type_t downstream_type
Definition: hwloc.h:595
Only keep likely-important objects of the given type.
Definition: hwloc.h:2027
Level 2 instruction Cache (filtered out by default).
Definition: hwloc.h:204
Virtual depth for software device object level.
Definition: hwloc.h:761
Group objects. Objects which do not fit in the above but are detected by hwloc and are useful to take...
Definition: hwloc.h:207
int hwloc_get_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the CPUs near the physical NUMA node(s) and binding policy of the memory identified by (addr...
Data cache.
Definition: hwloc.h:278
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:366
PCI device (filtered out by default). They are not added to the topology unless I/O discovery is enab...
Definition: hwloc.h:246
Avoid any effect on CPU binding.
Definition: hwloc.h:1402
Bridge (filtered out by default). Any bridge that connects the host or an I/O bus, to another I/O bus. They are not added to the topology unless I/O discovery is enabled with hwloc_topology_set_flags(). I/O objects are not listed in the main children list, but rather in the dedicated io children list. I/O objects have NULL CPU and node sets.
Definition: hwloc.h:237
hwloc_obj_osdev_type_e
Type of a OS device.
Definition: hwloc.h:289
unsigned char get_thisproc_cpubind
Definition: hwloc.h:1893
Allocate each memory page individually on the local NUMA node of the thread that touches it...
Definition: hwloc.h:1321
unsigned memory_arity
Number of Memory children. These children are listed in memory_first_child.
Definition: hwloc.h:423
hwloc_obj_t hwloc_topology_insert_misc_object(hwloc_topology_t topology, hwloc_obj_t parent, const char *name)
Add a MISC object as a leaf of the topology.
Host-side of a bridge, only possible upstream.
Definition: hwloc.h:284
hwloc_obj_t hwloc_topology_insert_group_object(hwloc_topology_t topology, hwloc_obj_t group)
Add more structure to the topology by adding an intermediate Group.
hwloc_obj_t hwloc_get_obj_by_depth(hwloc_topology_t topology, int depth, unsigned idx)
Returns the topology object at logical index idx from depth depth.
int hwloc_topology_set_pid(hwloc_topology_t restrict topology, hwloc_pid_t pid)
Change which process the topology is viewed from.
unsigned logical_index
Horizontal index in the whole list of similar objects, hence guaranteed unique across the entire mach...
Definition: hwloc.h:385
hwloc_uint64_t size
Size of pages.
Definition: hwloc.h:553
void hwloc_topology_check(hwloc_topology_t topology)
Run internal checks on a topology structure.
int hwloc_get_cpubind(hwloc_topology_t topology, hwloc_cpuset_t set, int flags)
Get current process or thread binding.
hwloc_bitmap_t hwloc_cpuset_t
A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.
Definition: hwloc.h:135
void * hwloc_alloc(hwloc_topology_t topology, size_t len)
Allocate some memory.
unsigned char migrate_membind
Definition: hwloc.h:1947
Structure of a topology object.
Definition: hwloc.h:347
unsigned sibling_rank
Index in parent's children[] array. Or the index in parent's Memory, I/O or Misc children list...
Definition: hwloc.h:398
Level 3 Data (or Unified) Cache.
Definition: hwloc.h:199
Avoid any effect on memory binding.
Definition: hwloc.h:1125
Operating system device (filtered out by default). They are not added to the topology unless I/O disc...
Definition: hwloc.h:253
int hwloc_topology_get_depth(hwloc_topology_t restrict topology)
Get the depth of the hierarchical tree of objects.
Level 3 instruction Cache (filtered out by default).
Definition: hwloc.h:205
Set policy for all threads of the specified (possibly multithreaded) process. This flag is mutually e...
Definition: hwloc.h:1370
struct hwloc_bitmap_s * hwloc_bitmap_t
Set of bits represented as an opaque pointer to an internal bitmap.
Definition: bitmap.h:55
hwloc_obj_bridge_type_t upstream_type
Definition: hwloc.h:588
unsigned char numa_memory
Detecting the amount of memory in NUMA nodes is supported.
Definition: hwloc.h:1881
struct hwloc_obj ** children
Normal children, children[0 .. arity -1].
Definition: hwloc.h:407
int hwloc_obj_attr_snprintf(char *restrict string, size_t size, hwloc_obj_t obj, const char *restrict separator, int verbose)
Stringify the attributes of a given topology object into a human-readable form.
unsigned char nexttouch_membind
Definition: hwloc.h:1945
int hwloc_type_sscanf_as_depth(const char *string, hwloc_obj_type_t *typep, hwloc_topology_t topology, int *depthp)
Return an object type and its level depth from a type string.
int hwloc_topology_set_flags(hwloc_topology_t topology, unsigned long flags)
Set OR'ed flags to non-yet-loaded topology.
int hwloc_topology_load(hwloc_topology_t topology)
Build the actual topology.
int hwloc_topology_set_cache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all cache object types.
Get the set of allowed resources from the local operating system even if the topology was loaded from...
Definition: hwloc.h:1843
unsigned short vendor_id
Definition: hwloc.h:579
unsigned char pu
Detecting the number of PU objects is supported.
Definition: hwloc.h:1877
Level 5 Data (or Unified) Cache.
Definition: hwloc.h:201
struct hwloc_obj * misc_first_child
First Misc child. Misc objects are listed here (misc_arity and misc_first_child) instead of in the no...
Definition: hwloc.h:450
const struct hwloc_topology_support * hwloc_topology_get_support(hwloc_topology_t restrict topology)
Retrieve the topology support.
Miscellaneous objects (filtered out by default). Objects without particular meaning, that can e.g. be added by the application for its own use, or by hwloc for miscellaneous objects such as MemoryModule (DIMMs). These objects are not listed in the main children list, but rather in the dedicated misc children list. Misc objects may only have Misc objects as children, and those are in the dedicated misc children list as well. Misc objects have NULL CPU and node sets.
Definition: hwloc.h:261
int hwloc_topology_init(hwloc_topology_t *topologyp)
Allocate a topology context.
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition: hwloc.h:359
Allocate memory on the given nodes in an interleaved / round-robin manner. The precise layout of the ...
Definition: hwloc.h:1334
static hwloc_obj_t hwloc_get_obj_by_type(hwloc_topology_t topology, hwloc_obj_type_t type, unsigned idx)
Returns the topology object at logical index idx with type type.
hwloc_obj_bridge_type_e
Type of one side (upstream or downstream) of an I/O bridge.
Definition: hwloc.h:283
struct hwloc_obj * next_cousin
Next object of same type and depth.
Definition: hwloc.h:393
int depth
Vertical index in the hierarchy.
Definition: hwloc.h:370
Group-specific Object Attributes.
Definition: hwloc.h:568
hwloc_uint64_t local_memory
Local memory (in bytes)
Definition: hwloc.h:545
struct hwloc_info_s * infos
Array of stringified info type=name.
Definition: hwloc.h:521
hwloc_uint64_t total_memory
Total memory (in bytes) in NUMA nodes below this object.
Definition: hwloc.h:364
NUMA node-specific Object Attributes.
Definition: hwloc.h:544
static int hwloc_get_type_or_above_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type or above.
hwloc_membind_policy_t
Memory binding policy.
Definition: hwloc.h:1302
int hwloc_obj_type_snprintf(char *restrict string, size_t size, hwloc_obj_t obj, int verbose)
Stringify the type of a given topology object into a human-readable form.
int hwloc_get_memory_parents_depth(hwloc_topology_t topology)
Return the depth of parents where memory objects are attached.
hwloc_compare_types_e
Definition: hwloc.h:329
int hwloc_get_type_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type.
unsigned char set_thisproc_membind
Definition: hwloc.h:1921
int hwloc_topology_set_synthetic(hwloc_topology_t restrict topology, const char *restrict description)
Enable synthetic topology.
unsigned char numa
Detecting the number of NUMA nodes is supported.
Definition: hwloc.h:1879
int hwloc_obj_add_info(hwloc_obj_t obj, const char *name, const char *value)
Add the given info name and value pair to the given object.
hwloc_membind_flags_t
Memory binding flags.
Definition: hwloc.h:1365
unsigned char get_thisproc_membind
Definition: hwloc.h:1923
unsigned short domain
Definition: hwloc.h:591
Unified cache.
Definition: hwloc.h:277
hwloc_topology_flags_e
Flags to be set onto a topology context before load.
Definition: hwloc.h:1780
int hwloc_obj_add_other_obj_sets(hwloc_obj_t dst, hwloc_obj_t src)
Setup object cpusets/nodesets by OR'ing another object's sets.
Returned by get_membind() functions when multiple threads or parts of a memory area have differing me...
Definition: hwloc.h:1349
unsigned char get_area_memlocation
Definition: hwloc.h:1949
int hwloc_get_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags)
Get the current physical binding of process pid.
struct hwloc_obj * last_child
Last normal child.
Definition: hwloc.h:409
Bridge specific Object Attribues.
Definition: hwloc.h:584
hwloc_uint64_t count
Number of pages of this size.
Definition: hwloc.h:554
int hwloc_get_area_memlocation(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, int flags)
Get the NUMA nodes where memory identified by (addr, len ) is physically allocated.
struct hwloc_obj * next_sibling
Next object below the same parent (inside the same list of children).
Definition: hwloc.h:399
unsigned os_index
OS-provided physical index number. It is not guaranteed unique across the entire machine, except for PUs and NUMA nodes. Set to HWLOC_UNKNOWN_INDEX if unknown or irrelevant for this object.
Definition: hwloc.h:352
unsigned char set_proc_membind
Definition: hwloc.h:1925
Operating system block device. For instance "sda" on Linux.
Definition: hwloc.h:290
Operating system GPU device. For instance ":0.0" for a GL display, "card0" for a Linux DRM device...
Definition: hwloc.h:292
hwloc_cpubind_flags_t
Process/Thread binding flags.
Definition: hwloc.h:1076
int hwloc_set_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Bind the already-allocated memory identified by (addr, len) to the NUMA node(s) specified by set...
Level 4 Data (or Unified) Cache.
Definition: hwloc.h:200
Bind all threads of the current (possibly) multithreaded process.
Definition: hwloc.h:1079
int hwloc_set_membind(hwloc_topology_t topology, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Set the default memory binding policy of the current process or thread to prefer the NUMA node(s) spe...
Request for strict binding from the OS.
Definition: hwloc.h:1108
char * value
Info value.
Definition: hwloc.h:610
unsigned depth
Depth of group object. It may change if intermediate Group objects are added.
Definition: hwloc.h:569
Flags describing actual memory binding support for this topology.
Definition: hwloc.h:1919
Core. A computation unit (may be shared by several logical processors).
Definition: hwloc.h:184
hwloc_obj_type_t type
Type of object.
Definition: hwloc.h:349
unsigned char get_proc_last_cpu_location
Definition: hwloc.h:1909
Object info.
Definition: hwloc.h:608
Virtual depth for PCI device object level.
Definition: hwloc.h:760
void * userdata
Application-given private data pointer, initialized to NULL, use it as you wish. See hwloc_topology_s...
Definition: hwloc.h:525
unsigned char get_area_membind
Definition: hwloc.h:1935
Value returned by hwloc_compare_types() when types can not be compared.
Definition: hwloc.h:330
unsigned misc_arity
Number of Misc children. These children are listed in misc_first_child.
Definition: hwloc.h:447
struct hwloc_obj * io_first_child
First I/O child. Bridges, PCI and OS devices are listed here (io_arity and io_first_child) instead of...
Definition: hwloc.h:438
hwloc_cpuset_t cpuset
CPUs covered by this object.
Definition: hwloc.h:457
static int hwloc_get_nbobjs_by_type(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the width of level type type.
hwloc_uint64_t gp_index
Global persistent index. Generated by hwloc, unique across the topology (contrary to os_index) and pe...
Definition: hwloc.h:530
unsigned depth
Depth of cache (e.g., L1, L2, ...etc.)
Definition: hwloc.h:561
Level 2 Data (or Unified) Cache.
Definition: hwloc.h:198
unsigned kind
Internally-used kind of group.
Definition: hwloc.h:571
int hwloc_set_cpubind(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags)
Bind current process or thread on cpus given in physical bitmap set.
Instruction cache (filtered out by default).
Definition: hwloc.h:279
unsigned subkind
Internally-used subkind to distinguish different levels of groups with same kind. ...
Definition: hwloc.h:572
struct hwloc_obj * prev_cousin
Previous object of same type and depth.
Definition: hwloc.h:394
Operating system dma engine device. For instance the "dma0chan0" DMA channel on Linux.
Definition: hwloc.h:300
hwloc_cpuset_t complete_cpuset
The complete CPU set of logical processors of this object,.
Definition: hwloc.h:472
int hwloc_type_sscanf(const char *string, hwloc_obj_type_t *typep, union hwloc_obj_attr_u *attrp, size_t attrsize)
Return an object type and attributes from a type string.
struct hwloc_obj * parent
Parent, NULL if root (Machine object)
Definition: hwloc.h:397
Keep all objects of this type.
Definition: hwloc.h:1990
Cache-specific Object Attributes.
Definition: hwloc.h:559
unsigned char set_area_membind
Definition: hwloc.h:1933
char * subtype
Subtype string to better describe the type field.
Definition: hwloc.h:350
Virtual depth for NUMA nodes.
Definition: hwloc.h:758
unsigned page_types_len
Size of array page_types.
Definition: hwloc.h:546
Object type-specific Attributes.
Definition: hwloc.h:542
static int hwloc_get_type_or_below_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type or below.