hwloc.h
/*
* Copyright © 2009 CNRS
* Copyright © 2009-2013 Inria. All rights reserved.
* Copyright © 2009-2012 Université Bordeaux 1
* Copyright © 2009-2011 Cisco Systems, Inc. All rights reserved.
* See COPYING in top-level directory.
*/
/*=====================================================================
* PLEASE GO READ THE DOCUMENTATION!
* ------------------------------------------------
* $tarball_directory/doc/doxygen-doc/
* or
* http://www.open-mpi.org/projects/hwloc/doc/
*=====================================================================
*
* FAIR WARNING: Do NOT expect to be able to figure out all the
* subtleties of hwloc by simply reading function prototypes and
* constant descrptions here in this file.
*
* Hwloc has wonderful documentation in both PDF and HTML formats for
* your reading pleasure. The formal documentation explains a LOT of
* hwloc-specific concepts, provides definitions, and discusses the
* "big picture" for many of the things that you'll find here in this
* header file.
*
* The PDF/HTML documentation was generated via Doxygen; much of what
* you'll see in there is also here in this file. BUT THERE IS A LOT
* THAT IS IN THE PDF/HTML THAT IS ***NOT*** IN hwloc.h!
*
* There are entire paragraph-length descriptions, discussions, and
* pretty prictures to explain subtle corner cases, provide concrete
* examples, etc.
*
* Please, go read the documentation. :-)
*
*=====================================================================*/
#ifndef HWLOC_H
#define HWLOC_H
#include <hwloc/autogen/config.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
/*
* Symbol transforms
*/
#include <hwloc/rename.h>
/*
* Bitmap definitions
*/
#include <hwloc/bitmap.h>
#ifdef __cplusplus
extern "C" {
#endif
#define HWLOC_API_VERSION 0x00010800
unsigned hwloc_get_api_version(void);
#define HWLOC_COMPONENT_ABI 3
typedef hwloc_bitmap_t hwloc_cpuset_t;
typedef hwloc_const_bitmap_t hwloc_const_cpuset_t;
typedef hwloc_bitmap_t hwloc_nodeset_t;
typedef hwloc_const_bitmap_t hwloc_const_nodeset_t;
typedef enum {
/* ***************************************************************
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
If new enum values are added here, you MUST also go update the
obj_type_order[] and obj_order_type[] arrays in src/topology.c.
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
*************************************************************** */
HWLOC_OBJ_SYSTEM,
HWLOC_OBJ_MACHINE,
HWLOC_OBJ_NODE,
HWLOC_OBJ_SOCKET,
HWLOC_OBJ_CACHE,
HWLOC_OBJ_CORE,
HWLOC_OBJ_PU,
HWLOC_OBJ_GROUP,
HWLOC_OBJ_MISC,
HWLOC_OBJ_BRIDGE,
HWLOC_OBJ_PCI_DEVICE,
HWLOC_OBJ_OS_DEVICE,
HWLOC_OBJ_TYPE_MAX
/* ***************************************************************
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
If new enum values are added here, you MUST also go update the
obj_type_order[] and obj_order_type[] arrays in src/topology.c.
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
*************************************************************** */
} hwloc_obj_type_t;
typedef enum hwloc_obj_cache_type_e {
HWLOC_OBJ_CACHE_UNIFIED,
HWLOC_OBJ_CACHE_DATA,
HWLOC_OBJ_CACHE_INSTRUCTION
} hwloc_obj_cache_type_t;
typedef enum hwloc_obj_bridge_type_e {
HWLOC_OBJ_BRIDGE_HOST,
HWLOC_OBJ_BRIDGE_PCI
} hwloc_obj_bridge_type_t;
typedef enum hwloc_obj_osdev_type_e {
HWLOC_OBJ_OSDEV_BLOCK,
HWLOC_OBJ_OSDEV_GPU,
HWLOC_OBJ_OSDEV_NETWORK,
HWLOC_OBJ_OSDEV_OPENFABRICS,
HWLOC_OBJ_OSDEV_DMA,
HWLOC_OBJ_OSDEV_COPROC
} hwloc_obj_osdev_type_t;
int hwloc_compare_types (hwloc_obj_type_t type1, hwloc_obj_type_t type2) ;
enum hwloc_compare_types_e {
HWLOC_TYPE_UNORDERED = INT_MAX
};
union hwloc_obj_attr_u;
struct hwloc_obj_memory_s {
hwloc_uint64_t total_memory;
hwloc_uint64_t local_memory;
unsigned page_types_len;
struct hwloc_obj_memory_page_type_s {
hwloc_uint64_t size;
hwloc_uint64_t count;
} * page_types;
};
struct hwloc_obj {
/* physical information */
hwloc_obj_type_t type;
unsigned os_index;
char *name;
struct hwloc_obj_memory_s memory;
union hwloc_obj_attr_u *attr;
/* global position */
unsigned depth;
unsigned logical_index;
signed os_level;
/* cousins are all objects of the same type (and depth) across the entire topology */
struct hwloc_obj *next_cousin;
struct hwloc_obj *prev_cousin;
/* children of the same parent are siblings, even if they may have different type and depth */
struct hwloc_obj *parent;
unsigned sibling_rank;
struct hwloc_obj *next_sibling;
struct hwloc_obj *prev_sibling;
/* children array below this object */
unsigned arity;
struct hwloc_obj **children;
struct hwloc_obj *first_child;
struct hwloc_obj *last_child;
/* misc */
void *userdata;
/* cpusets and nodesets */
hwloc_cpuset_t cpuset;
hwloc_cpuset_t complete_cpuset;
hwloc_cpuset_t online_cpuset;
hwloc_cpuset_t allowed_cpuset;
hwloc_nodeset_t nodeset;
hwloc_nodeset_t complete_nodeset;
hwloc_nodeset_t allowed_nodeset;
struct hwloc_distances_s **distances;
unsigned distances_count;
struct hwloc_obj_info_s *infos;
unsigned infos_count;
int symmetric_subtree;
};
typedef struct hwloc_obj * hwloc_obj_t;
union hwloc_obj_attr_u {
struct hwloc_cache_attr_s {
hwloc_uint64_t size;
unsigned depth;
unsigned linesize;
int associativity;
hwloc_obj_cache_type_t type;
} cache;
struct hwloc_group_attr_s {
unsigned depth;
} group;
struct hwloc_pcidev_attr_s {
unsigned short domain;
unsigned char bus, dev, func;
unsigned short class_id;
unsigned short vendor_id, device_id, subvendor_id, subdevice_id;
unsigned char revision;
float linkspeed; /* in GB/s */
} pcidev;
struct hwloc_bridge_attr_s {
union {
struct hwloc_pcidev_attr_s pci;
} upstream;
hwloc_obj_bridge_type_t upstream_type;
union {
struct {
unsigned short domain;
unsigned char secondary_bus, subordinate_bus;
} pci;
} downstream;
hwloc_obj_bridge_type_t downstream_type;
unsigned depth;
} bridge;
struct hwloc_osdev_attr_s {
hwloc_obj_osdev_type_t type;
} osdev;
};
struct hwloc_distances_s {
unsigned relative_depth;
unsigned nbobjs;
float *latency;
float latency_max;
float latency_base;
};
struct hwloc_obj_info_s {
char *name;
char *value;
};
struct hwloc_topology;
typedef struct hwloc_topology * hwloc_topology_t;
int hwloc_topology_init (hwloc_topology_t *topologyp);
int hwloc_topology_load(hwloc_topology_t topology);
void hwloc_topology_destroy (hwloc_topology_t topology);
void hwloc_topology_check(hwloc_topology_t topology);
int hwloc_topology_ignore_type(hwloc_topology_t topology, hwloc_obj_type_t type);
int hwloc_topology_ignore_type_keep_structure(hwloc_topology_t topology, hwloc_obj_type_t type);
int hwloc_topology_ignore_all_keep_structure(hwloc_topology_t topology);
enum hwloc_topology_flags_e {
HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM = (1UL<<0),
HWLOC_TOPOLOGY_FLAG_IS_THISSYSTEM = (1UL<<1),
HWLOC_TOPOLOGY_FLAG_IO_DEVICES = (1UL<<2),
HWLOC_TOPOLOGY_FLAG_IO_BRIDGES = (1UL<<3),
HWLOC_TOPOLOGY_FLAG_WHOLE_IO = (1UL<<4),
HWLOC_TOPOLOGY_FLAG_ICACHES = (1UL<<5)
};
int hwloc_topology_set_flags (hwloc_topology_t topology, unsigned long flags);
unsigned long hwloc_topology_get_flags (hwloc_topology_t topology);
int hwloc_topology_set_pid(hwloc_topology_t restrict topology, hwloc_pid_t pid);
int hwloc_topology_set_fsroot(hwloc_topology_t restrict topology, const char * restrict fsroot_path);
int hwloc_topology_set_synthetic(hwloc_topology_t restrict topology, const char * restrict description);
int hwloc_topology_set_xml(hwloc_topology_t restrict topology, const char * restrict xmlpath);
int hwloc_topology_set_xmlbuffer(hwloc_topology_t restrict topology, const char * restrict buffer, int size);
int hwloc_topology_set_custom(hwloc_topology_t topology);
int hwloc_topology_set_distance_matrix(hwloc_topology_t restrict topology,
hwloc_obj_type_t type, unsigned nbobjs,
unsigned *os_index, float *distances);
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology) ;
struct hwloc_topology_discovery_support {
unsigned char pu;
};
struct hwloc_topology_cpubind_support {
unsigned char set_thisproc_cpubind;
unsigned char get_thisproc_cpubind;
unsigned char set_proc_cpubind;
unsigned char get_proc_cpubind;
unsigned char set_thisthread_cpubind;
unsigned char get_thisthread_cpubind;
unsigned char set_thread_cpubind;
unsigned char get_thread_cpubind;
unsigned char get_thisproc_last_cpu_location;
unsigned char get_proc_last_cpu_location;
unsigned char get_thisthread_last_cpu_location;
};
struct hwloc_topology_membind_support {
unsigned char set_thisproc_membind;
unsigned char get_thisproc_membind;
unsigned char set_proc_membind;
unsigned char get_proc_membind;
unsigned char set_thisthread_membind;
unsigned char get_thisthread_membind;
unsigned char set_area_membind;
unsigned char get_area_membind;
unsigned char alloc_membind;
unsigned char firsttouch_membind;
unsigned char bind_membind;
unsigned char interleave_membind;
unsigned char replicate_membind;
unsigned char nexttouch_membind;
unsigned char migrate_membind;
};
struct hwloc_topology_support {
struct hwloc_topology_discovery_support *discovery;
struct hwloc_topology_cpubind_support *cpubind;
struct hwloc_topology_membind_support *membind;
};
const struct hwloc_topology_support *hwloc_topology_get_support(hwloc_topology_t restrict topology);
unsigned hwloc_topology_get_depth(hwloc_topology_t restrict topology) ;
int hwloc_get_type_depth (hwloc_topology_t topology, hwloc_obj_type_t type);
enum hwloc_get_type_depth_e {
HWLOC_TYPE_DEPTH_UNKNOWN = -1,
HWLOC_TYPE_DEPTH_MULTIPLE = -2,
HWLOC_TYPE_DEPTH_BRIDGE = -3,
HWLOC_TYPE_DEPTH_PCI_DEVICE = -4,
HWLOC_TYPE_DEPTH_OS_DEVICE = -5
};
static inline int
hwloc_get_type_or_below_depth (hwloc_topology_t topology, hwloc_obj_type_t type) ;
static inline int
hwloc_get_type_or_above_depth (hwloc_topology_t topology, hwloc_obj_type_t type) ;
hwloc_obj_type_t hwloc_get_depth_type (hwloc_topology_t topology, unsigned depth) ;
unsigned hwloc_get_nbobjs_by_depth (hwloc_topology_t topology, unsigned depth) ;
static inline int
hwloc_get_nbobjs_by_type (hwloc_topology_t topology, hwloc_obj_type_t type) ;
static inline hwloc_obj_t
hwloc_get_root_obj (hwloc_topology_t topology) ;
hwloc_obj_t hwloc_get_obj_by_depth (hwloc_topology_t topology, unsigned depth, unsigned idx) ;
static inline hwloc_obj_t
hwloc_get_obj_by_type (hwloc_topology_t topology, hwloc_obj_type_t type, unsigned idx) ;
static inline hwloc_obj_t
hwloc_get_next_obj_by_depth (hwloc_topology_t topology, unsigned depth, hwloc_obj_t prev);
static inline hwloc_obj_t
hwloc_get_next_obj_by_type (hwloc_topology_t topology, hwloc_obj_type_t type,
hwloc_obj_t prev);
const char * hwloc_obj_type_string (hwloc_obj_type_t type) ;
hwloc_obj_type_t hwloc_obj_type_of_string (const char * string) ;
int hwloc_obj_type_snprintf(char * restrict string, size_t size, hwloc_obj_t obj,
int verbose);
int hwloc_obj_attr_snprintf(char * restrict string, size_t size, hwloc_obj_t obj, const char * restrict separator,
int verbose);
int hwloc_obj_cpuset_snprintf(char * restrict str, size_t size, size_t nobj, const hwloc_obj_t * restrict objs);
static inline const char *
hwloc_obj_get_info_by_name(hwloc_obj_t obj, const char *name) ;
void hwloc_obj_add_info(hwloc_obj_t obj, const char *name, const char *value);
typedef enum {
HWLOC_CPUBIND_PROCESS = (1<<0),
HWLOC_CPUBIND_THREAD = (1<<1),
HWLOC_CPUBIND_STRICT = (1<<2),
HWLOC_CPUBIND_NOMEMBIND = (1<<3)
} hwloc_cpubind_flags_t;
int hwloc_set_cpubind(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags);
int hwloc_get_cpubind(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int hwloc_set_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t set, int flags);
int hwloc_get_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
#ifdef hwloc_thread_t
int hwloc_set_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_const_cpuset_t set, int flags);
#endif
#ifdef hwloc_thread_t
int hwloc_get_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_cpuset_t set, int flags);
#endif
int hwloc_get_last_cpu_location(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int hwloc_get_proc_last_cpu_location(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
typedef enum {
HWLOC_MEMBIND_DEFAULT = 0,
HWLOC_MEMBIND_FIRSTTOUCH = 1,
HWLOC_MEMBIND_BIND = 2,
HWLOC_MEMBIND_INTERLEAVE = 3,
HWLOC_MEMBIND_REPLICATE = 4,
HWLOC_MEMBIND_NEXTTOUCH = 5,
HWLOC_MEMBIND_MIXED = -1
} hwloc_membind_policy_t;
typedef enum {
HWLOC_MEMBIND_PROCESS = (1<<0),
HWLOC_MEMBIND_THREAD = (1<<1),
HWLOC_MEMBIND_STRICT = (1<<2),
HWLOC_MEMBIND_MIGRATE = (1<<3),
HWLOC_MEMBIND_NOCPUBIND = (1<<4)
} hwloc_membind_flags_t;
int hwloc_set_membind_nodeset(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int hwloc_set_membind(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags);
int hwloc_get_membind_nodeset(hwloc_topology_t topology, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int hwloc_get_membind(hwloc_topology_t topology, hwloc_cpuset_t cpuset, hwloc_membind_policy_t * policy, int flags);
int hwloc_set_proc_membind_nodeset(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int hwloc_set_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags);
int hwloc_get_proc_membind_nodeset(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int hwloc_get_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t cpuset, hwloc_membind_policy_t * policy, int flags);
int hwloc_set_area_membind_nodeset(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int hwloc_set_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags);
int hwloc_get_area_membind_nodeset(hwloc_topology_t topology, const void *addr, size_t len, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int hwloc_get_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_cpuset_t cpuset, hwloc_membind_policy_t * policy, int flags);
void *hwloc_alloc(hwloc_topology_t topology, size_t len);
void *hwloc_alloc_membind_nodeset(hwloc_topology_t topology, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags) ;
void *hwloc_alloc_membind(hwloc_topology_t topology, size_t len, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags) ;
static inline void *
hwloc_alloc_membind_policy_nodeset(hwloc_topology_t topology, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags) ;
static inline void *
hwloc_alloc_membind_policy(hwloc_topology_t topology, size_t len, hwloc_const_cpuset_t set, hwloc_membind_policy_t policy, int flags) ;
int hwloc_free(hwloc_topology_t topology, void *addr, size_t len);
hwloc_obj_t hwloc_topology_insert_misc_object_by_cpuset(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, const char *name);
hwloc_obj_t hwloc_topology_insert_misc_object_by_parent(hwloc_topology_t topology, hwloc_obj_t parent, const char *name);
enum hwloc_restrict_flags_e {
HWLOC_RESTRICT_FLAG_ADAPT_DISTANCES = (1<<0),
HWLOC_RESTRICT_FLAG_ADAPT_MISC = (1<<1),
HWLOC_RESTRICT_FLAG_ADAPT_IO = (1<<2)
};
int hwloc_topology_restrict(hwloc_topology_t restrict topology, hwloc_const_cpuset_t cpuset, unsigned long flags);
int hwloc_topology_dup(hwloc_topology_t *newtopology, hwloc_topology_t oldtopology);
int hwloc_custom_insert_topology(hwloc_topology_t newtopology, hwloc_obj_t newparent, hwloc_topology_t oldtopology, hwloc_obj_t oldroot);
hwloc_obj_t hwloc_custom_insert_group_object_by_parent(hwloc_topology_t topology, hwloc_obj_t parent, int groupdepth);
int hwloc_topology_export_xml(hwloc_topology_t topology, const char *xmlpath);
int hwloc_topology_export_xmlbuffer(hwloc_topology_t topology, char **xmlbuffer, int *buflen);
void hwloc_free_xmlbuffer(hwloc_topology_t topology, char *xmlbuffer);
void hwloc_topology_set_userdata_export_callback(hwloc_topology_t topology,
void (*export_cb)(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj));
int hwloc_export_obj_userdata(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length);
int hwloc_export_obj_userdata_base64(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length);
void hwloc_topology_set_userdata_import_callback(hwloc_topology_t topology,
void (*import_cb)(hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length));
#ifdef __cplusplus
} /* extern "C" */
#endif
/* high-level helpers */
#include <hwloc/helper.h>
/* inline code of some functions above */
#include <hwloc/inlines.h>
/* topology diffs */
#include <hwloc/diff.h>
/* deprecated headers */
#include <hwloc/deprecated.h>
#endif /* HWLOC_H */
hwloc_obj_attr_u::hwloc_bridge_attr_s::domain
unsigned short domain
Definition: hwloc.h:511
HWLOC_OBJ_CORE
Core. A computation unit (may be shared by several logical processors).
Definition: hwloc.h:183
HWLOC_OBJ_BRIDGE_HOST
Host-side of a bridge, only possible upstream.
Definition: hwloc.h:253
hwloc_topology_cpubind_support::get_thisproc_cpubind
unsigned char get_thisproc_cpubind
Definition: hwloc.h:964
hwloc_set_thread_cpubind
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.
HWLOC_OBJ_OSDEV_OPENFABRICS
Operating system openfabrics device. For instance the &quot;mlx4_0&quot; InfiniBand HCA device on Linux...
Definition: hwloc.h:266
HWLOC_OBJ_OSDEV_NETWORK
Operating system network device. For instance the &quot;eth0&quot; interface on Linux.
Definition: hwloc.h:264
hwloc_obj_type_of_string
hwloc_obj_type_t hwloc_obj_type_of_string(const char *string)
Return an object type from the string.
hwloc_get_obj_by_type
static inline 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_topology_membind_support::replicate_membind
unsigned char replicate_membind
Definition: hwloc.h:1012
HWLOC_CPUBIND_PROCESS
Bind all threads of the current (possibly) multithreaded process.
Definition: hwloc.h:1303
HWLOC_TOPOLOGY_FLAG_IO_BRIDGES
Detect PCI bridges.
Definition: hwloc.h:734
hwloc_obj_memory_s::total_memory
hwloc_uint64_t total_memory
Total memory (in bytes) in this object and its children.
Definition: hwloc.h:311
hwloc_obj::distances
struct hwloc_distances_s ** distances
Distances between all objects at same depth below this object.
Definition: hwloc.h:462
HWLOC_TOPOLOGY_FLAG_ICACHES
Detect instruction caches.
Definition: hwloc.h:751
hwloc_distances_s::latency_max
float latency_max
The maximal value in the latency matrix.
Definition: hwloc.h:551
hwloc_get_next_obj_by_type
static inline 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.
hwloc_get_root_obj
static inline hwloc_obj_t hwloc_get_root_obj(hwloc_topology_t topology)
Returns the top-object of the topology-tree.
hwloc_obj_info_s
Object info.
Definition: hwloc.h:559
hwloc_obj_attr_u::hwloc_bridge_attr_s::depth
unsigned depth
Definition: hwloc.h:516
hwloc_get_type_depth
int hwloc_get_type_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type.
hwloc_obj::distances_count
unsigned distances_count
Definition: hwloc.h:463
hwloc_topology_export_xmlbuffer
int hwloc_topology_export_xmlbuffer(hwloc_topology_t topology, char **xmlbuffer, int *buflen)
Export the topology into a newly-allocated XML memory buffer.
hwloc_get_thread_cpubind
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.
hwloc_obj_info_s::value
char * value
Info value.
Definition: hwloc.h:561
hwloc_topology_ignore_all_keep_structure
int hwloc_topology_ignore_all_keep_structure(hwloc_topology_t topology)
Ignore all objects that do not bring any structure.
HWLOC_OBJ_SYSTEM
Whole system (may be a cluster of machines). The whole system that is accessible to hwloc...
Definition: hwloc.h:162
hwloc_topology_cpubind_support::set_thisthread_cpubind
unsigned char set_thisthread_cpubind
Definition: hwloc.h:970
hwloc_topology_cpubind_support
Flags describing actual PU binding support for this topology.
Definition: hwloc.h:960
hwloc_topology_membind_support::alloc_membind
unsigned char alloc_membind
Definition: hwloc.h:1004
HWLOC_MEMBIND_NOCPUBIND
Avoid any effect on CPU binding.
Definition: hwloc.h:1611
hwloc_set_membind
int hwloc_set_membind(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, 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) nea...
hwloc_obj_attr_u::hwloc_group_attr_s::depth
unsigned depth
Depth of group object.
Definition: hwloc.h:492
HWLOC_TYPE_UNORDERED
Value returned by hwloc_compare_types when types can not be compared.
Definition: hwloc.h:296
hwloc_obj::allowed_nodeset
hwloc_nodeset_t allowed_nodeset
The set of allowed NUMA memory nodes.
Definition: hwloc.h:449
hwloc_topology_set_xmlbuffer
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())...
hwloc_obj_attr_u::hwloc_osdev_attr_s
OS Device specific Object Attributes.
Definition: hwloc.h:519
hwloc_obj::arity
unsigned arity
Number of children.
Definition: hwloc.h:363
hwloc_topology_set_distance_matrix
int hwloc_topology_set_distance_matrix(hwloc_topology_t restrict topology, hwloc_obj_type_t type, unsigned nbobjs, unsigned *os_index, float *distances)
Provide a distance matrix.
HWLOC_OBJ_CACHE_UNIFIED
Unified cache.
Definition: hwloc.h:245
hwloc_obj_cpuset_snprintf
int hwloc_obj_cpuset_snprintf(char *restrict str, size_t size, size_t nobj, const hwloc_obj_t *restrict objs)
Stringify the cpuset containing a set of objects.
hwloc_compare_types_e
hwloc_compare_types_e
Definition: hwloc.h:295
hwloc_obj_attr_u::hwloc_bridge_attr_s::secondary_bus
unsigned char secondary_bus
Definition: hwloc.h:512
hwloc_obj_memory_s::page_types
struct hwloc_obj_memory_s::hwloc_obj_memory_page_type_s * page_types
hwloc_obj_attr_u::bridge
struct hwloc_obj_attr_u::hwloc_bridge_attr_s bridge
hwloc_topology_dup
int hwloc_topology_dup(hwloc_topology_t *newtopology, hwloc_topology_t oldtopology)
Duplicate a topology.
hwloc_get_type_or_above_depth
static inline 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_obj_attr_u::hwloc_pcidev_attr_s::device_id
unsigned short device_id
Definition: hwloc.h:499
hwloc_set_cpubind
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.
hwloc_obj_bridge_type_t
enum hwloc_obj_bridge_type_e hwloc_obj_bridge_type_t
Type of one side (upstream or downstream) of an I/O bridge.
hwloc_obj::last_child
struct hwloc_obj * last_child
Last child.
Definition: hwloc.h:366
HWLOC_RESTRICT_FLAG_ADAPT_DISTANCES
Adapt distance matrices according to objects being removed during restriction. If this flag is not se...
Definition: hwloc.h:1998
hwloc_obj_attr_u::cache
struct hwloc_obj_attr_u::hwloc_cache_attr_s cache
hwloc_restrict_flags_e
hwloc_restrict_flags_e
Flags to be given to hwloc_topology_restrict().
Definition: hwloc.h:1993
hwloc_compare_types
int hwloc_compare_types(hwloc_obj_type_t type1, hwloc_obj_type_t type2)
Compare the depth of two object types.
HWLOC_OBJ_BRIDGE
Bridge. Any bridge that connects the host or an I/O bus, to another I/O bus. Bridge objects have neit...
Definition: hwloc.h:213
hwloc_topology_membind_support::get_thisthread_membind
unsigned char get_thisthread_membind
Definition: hwloc.h:998
hwloc_get_proc_last_cpu_location
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.
hwloc_distances_s
Distances between objects.
Definition: hwloc.h:538
hwloc_get_next_obj_by_depth
static inline hwloc_obj_t hwloc_get_next_obj_by_depth(hwloc_topology_t topology, unsigned depth, hwloc_obj_t prev)
Returns the next object at depth depth.
HWLOC_TOPOLOGY_FLAG_WHOLE_IO
Detect the whole PCI hierarchy.
Definition: hwloc.h:743
hwloc_obj::depth
unsigned depth
Vertical index in the hierarchy. If the topology is symmetric, this is equal to the parent depth plus...
Definition: hwloc.h:343
hwloc_topology_destroy
void hwloc_topology_destroy(hwloc_topology_t topology)
Terminate and free a topology context.
hwloc_obj_attr_u::hwloc_pcidev_attr_s::bus
unsigned char bus
Definition: hwloc.h:497
hwloc_custom_insert_topology
int hwloc_custom_insert_topology(hwloc_topology_t newtopology, hwloc_obj_t newparent, hwloc_topology_t oldtopology, hwloc_obj_t oldroot)
Insert an existing topology inside a custom topology.
hwloc_obj_t
struct hwloc_obj * hwloc_obj_t
Convenience typedef; a pointer to a struct hwloc_obj.
Definition: hwloc.h:477
hwloc_obj_attr_u::hwloc_bridge_attr_s::upstream_type
hwloc_obj_bridge_type_t upstream_type
Definition: hwloc.h:508
hwloc_topology_cpubind_support::set_thisproc_cpubind
unsigned char set_thisproc_cpubind
Definition: hwloc.h:962
hwloc_topology_support::discovery
struct hwloc_topology_discovery_support * discovery
Definition: hwloc.h:1027
hwloc_get_cpubind
int hwloc_get_cpubind(hwloc_topology_t topology, hwloc_cpuset_t set, int flags)
Get current process or thread binding.
HWLOC_OBJ_SOCKET
Socket, physical package, or chip. In the physical meaning, i.e. that you can add or remove physicall...
Definition: hwloc.h:176
hwloc_topology_t
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:577
HWLOC_MEMBIND_DEFAULT
Reset the memory allocation policy to the system default.
Definition: hwloc.h:1511
hwloc_topology_cpubind_support::get_thisthread_cpubind
unsigned char get_thisthread_cpubind
Definition: hwloc.h:972
HWLOC_TOPOLOGY_FLAG_IS_THISSYSTEM
Assume that the selected backend provides the topology for the system on which we are running...
Definition: hwloc.h:713
hwloc_distances_s::latency
float * latency
Matrix of latencies between objects, stored as a one-dimension array. May be NULL if the distances co...
Definition: hwloc.h:546
hwloc_obj::parent
struct hwloc_obj * parent
Parent, NULL if root (system object)
Definition: hwloc.h:357
hwloc_topology_get_flags
unsigned long hwloc_topology_get_flags(hwloc_topology_t topology)
Get OR&#39;ed flags of a topology.
hwloc_export_obj_userdata_base64
int hwloc_export_obj_userdata_base64(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length)
Encode and export some object userdata to XML.
hwloc_obj::prev_sibling
struct hwloc_obj * prev_sibling
Previous object below the same parent.
Definition: hwloc.h:360
hwloc_topology_support
Set of flags describing actual support for this topology.
Definition: hwloc.h:1026
hwloc_obj_info_s::name
char * name
Info name.
Definition: hwloc.h:560
hwloc_obj_memory_s::page_types_len
unsigned page_types_len
Size of array page_types.
Definition: hwloc.h:315
hwloc_set_proc_membind_nodeset
int hwloc_set_proc_membind_nodeset(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_nodeset_t nodeset, 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...
hwloc_obj_type_snprintf
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.
hwloc_topology_membind_support::set_area_membind
unsigned char set_area_membind
Definition: hwloc.h:1000
hwloc_obj_osdev_type_e
hwloc_obj_osdev_type_e
Type of a OS device.
Definition: hwloc.h:258
hwloc_alloc_membind_policy
static inline void * hwloc_alloc_membind_policy(hwloc_topology_t topology, size_t len, hwloc_const_cpuset_t set, hwloc_membind_policy_t policy, int flags)
Allocate some memory on the memory nodes near given cpuset cpuset.
hwloc_obj_attr_u::hwloc_pcidev_attr_s
PCI Device specific Object Attributes.
Definition: hwloc.h:495
HWLOC_OBJ_NODE
NUMA node. A set of processors around memory which the processors can directly access.
Definition: hwloc.h:172
hwloc_obj::userdata
void * userdata
Application-given private data pointer, initialized to NULL, use it as you wish. See hwloc_topology_s...
Definition: hwloc.h:369
hwloc_alloc_membind
void * hwloc_alloc_membind(hwloc_topology_t topology, size_t len, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags)
Allocate some memory on memory nodes near the given physical cpuset cpuset.
hwloc_obj_memory_s
Object memory.
Definition: hwloc.h:310
hwloc_obj_add_info
void 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_topology_cpubind_support::get_thisproc_last_cpu_location
unsigned char get_thisproc_last_cpu_location
Definition: hwloc.h:978
HWLOC_MEMBIND_FIRSTTOUCH
Allocate memory but do not immediately bind it to a specific locality. Instead, each page in the allo...
Definition: hwloc.h:1521
hwloc_get_membind_nodeset
int hwloc_get_membind_nodeset(hwloc_topology_t topology, hwloc_nodeset_t nodeset, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the current process or thread...
hwloc_obj_memory_s::hwloc_obj_memory_page_type_s::size
hwloc_uint64_t size
Size of pages.
Definition: hwloc.h:322
HWLOC_OBJ_OSDEV_COPROC
Operating system co-processor device. For instance &quot;mic0&quot; for a Xeon Phi (MIC) on Linux...
Definition: hwloc.h:270
hwloc_obj_attr_snprintf
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.
HWLOC_MEMBIND_BIND
Allocate memory on the specified nodes.
Definition: hwloc.h:1525
hwloc_topology_support::membind
struct hwloc_topology_membind_support * membind
Definition: hwloc.h:1029
hwloc_free
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().
hwloc_obj_attr_u::pcidev
struct hwloc_obj_attr_u::hwloc_pcidev_attr_s pcidev
hwloc_membind_flags_t
hwloc_membind_flags_t
Memory binding flags.
Definition: hwloc.h:1574
hwloc_get_area_membind_nodeset
int hwloc_get_area_membind_nodeset(hwloc_topology_t topology, const void *addr, size_t len, hwloc_nodeset_t nodeset, hwloc_membind_policy_t *policy, int flags)
Query the physical NUMA node(s) and binding policy of the memory identified by (addr, len ).
hwloc_topology_set_custom
int hwloc_topology_set_custom(hwloc_topology_t topology)
Prepare the topology for custom assembly.
hwloc_export_obj_userdata
int hwloc_export_obj_userdata(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length)
Export some object userdata to XML.
HWLOC_TYPE_DEPTH_BRIDGE
Virtual depth for bridge object level.
Definition: hwloc.h:1081
HWLOC_OBJ_CACHE_INSTRUCTION
Instruction cache. Only used when the HWLOC_TOPOLOGY_FLAG_ICACHES topology flag is set...
Definition: hwloc.h:247
hwloc_get_nbobjs_by_type
static inline int hwloc_get_nbobjs_by_type(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the width of level type type.
hwloc_obj_attr_u::hwloc_cache_attr_s::associativity
int associativity
Ways of associativity, -1 if fully associative, 0 if unknown.
Definition: hwloc.h:486
hwloc_obj::attr
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:339
hwloc_topology_is_thissystem
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
HWLOC_CPUBIND_NOMEMBIND
Avoid any effect on memory binding.
Definition: hwloc.h:1349
hwloc_set_area_membind_nodeset
int hwloc_set_area_membind_nodeset(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags)
Bind the already-allocated memory identified by (addr, len) to the NUMA node(s) in physical nodeset...
hwloc_obj_attr_u::hwloc_pcidev_attr_s::subdevice_id
unsigned short subdevice_id
Definition: hwloc.h:499
hwloc_topology_membind_support::set_proc_membind
unsigned char set_proc_membind
Definition: hwloc.h:992
hwloc_cpubind_flags_t
hwloc_cpubind_flags_t
Process/Thread binding flags.
Definition: hwloc.h:1300
hwloc_obj_attr_u
Object type-specific Attributes.
Definition: hwloc.h:480
hwloc_obj::name
char * name
Object description if any.
Definition: hwloc.h:335
hwloc_obj_attr_u::hwloc_cache_attr_s::depth
unsigned depth
Depth of cache (e.g., L1, L2, ...etc.)
Definition: hwloc.h:484
HWLOC_OBJ_GROUP
Group objects. Objects which do not fit in the above but are detected by hwloc and are useful to take...
Definition: hwloc.h:196
hwloc_topology_membind_support::get_proc_membind
unsigned char get_proc_membind
Definition: hwloc.h:994
hwloc_obj_attr_u::hwloc_bridge_attr_s::downstream_type
hwloc_obj_bridge_type_t downstream_type
Definition: hwloc.h:515
hwloc_alloc_membind_nodeset
void * hwloc_alloc_membind_nodeset(hwloc_topology_t topology, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags)
Allocate some memory on the given physical nodeset nodeset.
HWLOC_TYPE_DEPTH_MULTIPLE
Objects of given type exist at different depth in the topology.
Definition: hwloc.h:1080
hwloc_set_membind_nodeset
int hwloc_set_membind_nodeset(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, 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...
hwloc_obj_attr_u::hwloc_bridge_attr_s::subordinate_bus
unsigned char subordinate_bus
Definition: hwloc.h:512
hwloc_const_nodeset_t
hwloc_const_bitmap_t hwloc_const_nodeset_t
A non-modifiable hwloc_nodeset_t.
Definition: hwloc.h:136
hwloc_distances_s::relative_depth
unsigned relative_depth
Relative depth of the considered objects below the object containing this distance information...
Definition: hwloc.h:539
hwloc_get_proc_membind_nodeset
int hwloc_get_proc_membind_nodeset(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_nodeset_t nodeset, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the specified process.
hwloc_obj::first_child
struct hwloc_obj * first_child
First child.
Definition: hwloc.h:365
hwloc_obj_type_t
hwloc_obj_type_t
Type of topology object.
Definition: hwloc.h:152
HWLOC_MEMBIND_NEXTTOUCH
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:1554
hwloc_topology_insert_misc_object_by_parent
hwloc_obj_t hwloc_topology_insert_misc_object_by_parent(hwloc_topology_t topology, hwloc_obj_t parent, const char *name)
Add a MISC object as a leaf of the topology.
HWLOC_TOPOLOGY_FLAG_IO_DEVICES
Detect PCI devices.
Definition: hwloc.h:725
hwloc_distances_s::nbobjs
unsigned nbobjs
Number of objects considered in the matrix. It is the number of descendant objects at relative_depth ...
Definition: hwloc.h:541
hwloc_obj_attr_u::hwloc_bridge_attr_s::downstream
union hwloc_obj_attr_u::hwloc_bridge_attr_s::@1 downstream
hwloc_free_xmlbuffer
void hwloc_free_xmlbuffer(hwloc_topology_t topology, char *xmlbuffer)
Free a buffer allocated by hwloc_topology_export_xmlbuffer()
hwloc_topology_set_pid
int hwloc_topology_set_pid(hwloc_topology_t restrict topology, hwloc_pid_t pid)
Change which pid the topology is viewed from.
hwloc_topology_flags_e
hwloc_topology_flags_e
Flags to be set onto a topology context before load.
Definition: hwloc.h:685
hwloc_obj::infos
struct hwloc_obj_info_s * infos
Array of stringified info type=name.
Definition: hwloc.h:465
hwloc_topology_load
int hwloc_topology_load(hwloc_topology_t topology)
Build the actual topology.
hwloc_obj_attr_u::hwloc_cache_attr_s::size
hwloc_uint64_t size
Size of cache in bytes.
Definition: hwloc.h:483
hwloc_obj_cache_type_e
hwloc_obj_cache_type_e
Cache type.
Definition: hwloc.h:244
HWLOC_OBJ_OSDEV_DMA
Operating system dma engine device. For instance the &quot;dma0chan0&quot; DMA channel on Linux.
Definition: hwloc.h:268
hwloc_topology_set_userdata_import_callback
void hwloc_topology_set_userdata_import_callback(hwloc_topology_t topology, void(*import_cb)(hwloc_topology_t topology, hwloc_obj_t obj, const char *name, const void *buffer, size_t length))
Set the application-specific callback for importing userdata.
hwloc_alloc_membind_policy_nodeset
static inline void * hwloc_alloc_membind_policy_nodeset(hwloc_topology_t topology, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags)
Allocate some memory on the given nodeset nodeset.
hwloc_topology_set_flags
int hwloc_topology_set_flags(hwloc_topology_t topology, unsigned long flags)
Set OR&#39;ed flags to non-yet-loaded topology.
hwloc_topology_set_synthetic
int hwloc_topology_set_synthetic(hwloc_topology_t restrict topology, const char *restrict description)
Enable synthetic topology.
hwloc_alloc
void * hwloc_alloc(hwloc_topology_t topology, size_t len)
Allocate some memory.
hwloc_obj::allowed_cpuset
hwloc_cpuset_t allowed_cpuset
The CPU set of allowed logical processors.
Definition: hwloc.h:407
hwloc_obj_attr_u::hwloc_cache_attr_s
Cache-specific Object Attributes.
Definition: hwloc.h:482
HWLOC_MEMBIND_INTERLEAVE
Allocate memory on the given nodes in an interleaved / round-robin manner. The precise layout of the ...
Definition: hwloc.h:1534
HWLOC_MEMBIND_STRICT
Definition: hwloc.h:1592
hwloc_obj_attr_u::hwloc_osdev_attr_s::type
hwloc_obj_osdev_type_t type
Definition: hwloc.h:520
hwloc_topology_export_xml
int hwloc_topology_export_xml(hwloc_topology_t topology, const char *xmlpath)
Export the topology into an XML file.
hwloc_topology_membind_support::nexttouch_membind
unsigned char nexttouch_membind
Definition: hwloc.h:1014
hwloc_topology_membind_support::get_thisproc_membind
unsigned char get_thisproc_membind
Definition: hwloc.h:990
hwloc_topology_set_xml
int hwloc_topology_set_xml(hwloc_topology_t restrict topology, const char *restrict xmlpath)
Enable XML-file based topology.
hwloc_set_proc_membind
int hwloc_set_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags)
Set the default memory binding policy of the specified process to prefer the NUMA node(s) near the sp...
hwloc_obj
Structure of a topology object.
Definition: hwloc.h:331
hwloc_obj_type_string
const char * hwloc_obj_type_string(hwloc_obj_type_t type)
Return a stringified topology object type.
HWLOC_CPUBIND_STRICT
Request for strict binding from the OS.
Definition: hwloc.h:1332
hwloc_obj::symmetric_subtree
int symmetric_subtree
Set if the subtree of objects below this object is symmetric, which means all children and their chil...
Definition: hwloc.h:468
hwloc_topology_membind_support
Flags describing actual memory binding support for this topology.
Definition: hwloc.h:986
hwloc_obj_attr_u::group
struct hwloc_obj_attr_u::hwloc_group_attr_s group
hwloc_set_area_membind
int hwloc_set_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_cpuset_t cpuset, hwloc_membind_policy_t policy, int flags)
Bind the already-allocated memory identified by (addr, len) to the NUMA node(s) near physical cpuset...
hwloc_topology_cpubind_support::get_thisthread_last_cpu_location
unsigned char get_thisthread_last_cpu_location
Definition: hwloc.h:982
hwloc_topology_insert_misc_object_by_cpuset
hwloc_obj_t hwloc_topology_insert_misc_object_by_cpuset(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, const char *name)
Add a MISC object to the topology.
hwloc_get_type_or_below_depth
static inline 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.
HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM
Detect the whole system, ignore reservations and offline settings.
Definition: hwloc.h:693
hwloc_obj::cpuset
hwloc_cpuset_t cpuset
CPUs covered by this object.
Definition: hwloc.h:375
hwloc_topology_ignore_type
int hwloc_topology_ignore_type(hwloc_topology_t topology, hwloc_obj_type_t type)
Ignore an object type.
HWLOC_OBJ_OSDEV_BLOCK
Operating system block device. For instance &quot;sda&quot; on Linux.
Definition: hwloc.h:259
hwloc_obj_attr_u::hwloc_pcidev_attr_s::func
unsigned char func
Definition: hwloc.h:497
hwloc_distances_s::latency_base
float latency_base
The multiplier that should be applied to latency matrix to retrieve the original OS-provided latencie...
Definition: hwloc.h:552
hwloc_obj_memory_s::hwloc_obj_memory_page_type_s
Array of local memory page types, NULL if no local memory and page_types is 0.
Definition: hwloc.h:321
HWLOC_OBJ_OSDEV_GPU
Operating system GPU device. For instance &quot;:0.0&quot; for a GL display, &quot;card0&quot; for a Linux DRM device...
Definition: hwloc.h:261
HWLOC_TYPE_DEPTH_OS_DEVICE
Virtual depth for software device object level.
Definition: hwloc.h:1083
hwloc_obj_attr_u::hwloc_pcidev_attr_s::subvendor_id
unsigned short subvendor_id
Definition: hwloc.h:499
hwloc_obj::sibling_rank
unsigned sibling_rank
Index in parent&#39;s children[] array.
Definition: hwloc.h:358
HWLOC_RESTRICT_FLAG_ADAPT_IO
Move I/O objects to ancestors if their parents are removed during restriction. If this flag is not se...
Definition: hwloc.h:2010
hwloc_topology_membind_support::bind_membind
unsigned char bind_membind
Definition: hwloc.h:1008
hwloc_obj_attr_u::hwloc_pcidev_attr_s::vendor_id
unsigned short vendor_id
Definition: hwloc.h:499
HWLOC_OBJ_OS_DEVICE
Operating system device. These objects have neither CPU sets nor node sets. They are not added to the...
Definition: hwloc.h:225
hwloc_get_obj_by_depth
hwloc_obj_t hwloc_get_obj_by_depth(hwloc_topology_t topology, unsigned depth, unsigned idx)
Returns the topology object at logical index idx from depth depth.
hwloc_topology_membind_support::set_thisthread_membind
unsigned char set_thisthread_membind
Definition: hwloc.h:996
hwloc_obj::children
struct hwloc_obj ** children
Children, children[0 .. arity -1].
Definition: hwloc.h:364
hwloc_obj_attr_u::osdev
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
hwloc_get_last_cpu_location
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.
hwloc_obj::online_cpuset
hwloc_cpuset_t online_cpuset
The CPU set of online logical processors.
Definition: hwloc.h:399
hwloc_topology_membind_support::set_thisproc_membind
unsigned char set_thisproc_membind
Definition: hwloc.h:988
hwloc_get_proc_cpubind
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.
hwloc_topology_set_userdata_export_callback
void hwloc_topology_set_userdata_export_callback(hwloc_topology_t topology, void(*export_cb)(void *reserved, hwloc_topology_t topology, hwloc_obj_t obj))
Set the application-specific callback for exporting userdata.
hwloc_get_api_version
unsigned hwloc_get_api_version(void)
Indicate at runtime which hwloc API version was used at build time.
hwloc_topology_restrict
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.
HWLOC_RESTRICT_FLAG_ADAPT_MISC
Move Misc objects to ancestors if their parents are removed during restriction. If this flag is not s...
Definition: hwloc.h:2004
hwloc_topology_ignore_type_keep_structure
int hwloc_topology_ignore_type_keep_structure(hwloc_topology_t topology, hwloc_obj_type_t type)
Ignore an object type if it does not bring any structure.
HWLOC_OBJ_TYPE_MAX
Definition: hwloc.h:231
hwloc_const_cpuset_t
hwloc_const_bitmap_t hwloc_const_cpuset_t
A non-modifiable hwloc_cpuset_t.
Definition: hwloc.h:118
hwloc_obj::next_sibling
struct hwloc_obj * next_sibling
Next object below the same parent.
Definition: hwloc.h:359
hwloc_obj_attr_u::hwloc_bridge_attr_s
Bridge specific Object Attribues.
Definition: hwloc.h:504
hwloc_topology_check
void hwloc_topology_check(hwloc_topology_t topology)
Run internal checks on a topology structure.
hwloc_obj_attr_u::hwloc_bridge_attr_s::upstream
union hwloc_obj_attr_u::hwloc_bridge_attr_s::@0 upstream
hwloc_obj::next_cousin
struct hwloc_obj * next_cousin
Next object of same type and depth.
Definition: hwloc.h:353
hwloc_set_proc_cpubind
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.
hwloc_obj_attr_u::hwloc_pcidev_attr_s::domain
unsigned short domain
Definition: hwloc.h:496
hwloc_obj_memory_s::local_memory
hwloc_uint64_t local_memory
Local memory (in bytes)
Definition: hwloc.h:312
HWLOC_MEMBIND_THREAD
Set policy for a specific thread of the current process. This flag is mutually exclusive with HWLOC_M...
Definition: hwloc.h:1584
hwloc_obj::complete_cpuset
hwloc_cpuset_t complete_cpuset
The complete CPU set of logical processors of this object,.
Definition: hwloc.h:388
hwloc_topology_init
int hwloc_topology_init(hwloc_topology_t *topologyp)
Allocate a topology context.
HWLOC_OBJ_CACHE_DATA
Data cache.
Definition: hwloc.h:246
hwloc_topology_cpubind_support::get_proc_last_cpu_location
unsigned char get_proc_last_cpu_location
Definition: hwloc.h:980
hwloc_nodeset_t
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:133
HWLOC_MEMBIND_PROCESS
Set policy for all threads of the specified (possibly multithreaded) process. This flag is mutually e...
Definition: hwloc.h:1579
hwloc_obj_attr_u::hwloc_cache_attr_s::linesize
unsigned linesize
Cache-line size in bytes. 0 if unknown.
Definition: hwloc.h:485
hwloc_obj::os_index
unsigned os_index
OS-provided physical index number.
Definition: hwloc.h:334
HWLOC_TYPE_DEPTH_PCI_DEVICE
Virtual depth for PCI device object level.
Definition: hwloc.h:1082
hwloc_obj::memory
struct hwloc_obj_memory_s memory
Memory attributes.
Definition: hwloc.h:337
hwloc_obj_attr_u::hwloc_pcidev_attr_s::linkspeed
float linkspeed
Definition: hwloc.h:501
HWLOC_OBJ_CACHE
Cache. Can be L1i, L1d, L2, L3, ...
Definition: hwloc.h:180
hwloc_custom_insert_group_object_by_parent
hwloc_obj_t hwloc_custom_insert_group_object_by_parent(hwloc_topology_t topology, hwloc_obj_t parent, int groupdepth)
Insert a new group object inside a custom topology.
hwloc_get_nbobjs_by_depth
unsigned hwloc_get_nbobjs_by_depth(hwloc_topology_t topology, unsigned depth)
Returns the width of level at depth depth.
hwloc_obj::complete_nodeset
hwloc_nodeset_t complete_nodeset
The complete NUMA node set of this object,.
Definition: hwloc.h:435
HWLOC_CPUBIND_THREAD
Bind current thread of current process.
Definition: hwloc.h:1307
hwloc_obj::logical_index
unsigned logical_index
Horizontal index in the whole list of similar objects, could be a &quot;cousin_rank&quot; since it&#39;s the rank...
Definition: hwloc.h:348
hwloc_topology_get_support
struct hwloc_topology_support * hwloc_topology_get_support(hwloc_topology_t restrict topology)
Retrieve the topology support.
hwloc_topology_discovery_support::pu
unsigned char pu
Detecting the number of PU objects is supported.
Definition: hwloc.h:956
HWLOC_MEMBIND_MIXED
Returned by hwloc_get_membind*() functions when multiple threads or parts of a memory area have diffe...
Definition: hwloc.h:1560
hwloc_obj_attr_u::hwloc_bridge_attr_s::pci
struct hwloc_pcidev_attr_s pci
Definition: hwloc.h:506
hwloc_topology_discovery_support
Flags describing actual discovery support for this topology.
Definition: hwloc.h:954
hwloc_get_proc_membind
int hwloc_get_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t cpuset, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the specified process (the locality ...
hwloc_obj_cache_type_t
enum hwloc_obj_cache_type_e hwloc_obj_cache_type_t
Cache type.
hwloc_obj_attr_u::hwloc_pcidev_attr_s::revision
unsigned char revision
Definition: hwloc.h:500
hwloc_obj_get_info_by_name
static inline 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.
hwloc_topology_membind_support::interleave_membind
unsigned char interleave_membind
Definition: hwloc.h:1010
hwloc_topology_cpubind_support::set_thread_cpubind
unsigned char set_thread_cpubind
Definition: hwloc.h:974
HWLOC_OBJ_PCI_DEVICE
PCI device. These objects have neither CPU sets nor node sets. They are not added to the topology unl...
Definition: hwloc.h:220
hwloc_obj::nodeset
hwloc_nodeset_t nodeset
NUMA nodes covered by this object or containing this object.
Definition: hwloc.h:418
hwloc_topology_get_depth
unsigned hwloc_topology_get_depth(hwloc_topology_t restrict topology)
Get the depth of the hierarchical tree of objects.
hwloc_topology_membind_support::get_area_membind
unsigned char get_area_membind
Definition: hwloc.h:1002
hwloc_bitmap_t
struct hwloc_bitmap_s * hwloc_bitmap_t
Set of bits represented as an opaque pointer to an internal bitmap.
Definition: bitmap.h:45
hwloc_topology_set_fsroot
int hwloc_topology_set_fsroot(hwloc_topology_t restrict topology, const char *restrict fsroot_path)
Change the file-system root path when building the topology from sysfs/procfs.
hwloc_get_type_depth_e
hwloc_get_type_depth_e
Definition: hwloc.h:1078
hwloc_obj_osdev_type_t
enum hwloc_obj_osdev_type_e hwloc_obj_osdev_type_t
Type of a OS device.
hwloc_topology_membind_support::migrate_membind
unsigned char migrate_membind
Definition: hwloc.h:1017
hwloc_get_membind
int hwloc_get_membind(hwloc_topology_t topology, hwloc_cpuset_t cpuset, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the current process or thread (the l...
HWLOC_OBJ_PU
Processing Unit, or (Logical) Processor. An execution unit (may share a core with some other logical ...
Definition: hwloc.h:187
hwloc_obj_memory_s::hwloc_obj_memory_page_type_s::count
hwloc_uint64_t count
Number of pages of this size.
Definition: hwloc.h:323
hwloc_cpuset_t
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:116
hwloc_topology_membind_support::firsttouch_membind
unsigned char firsttouch_membind
Definition: hwloc.h:1006
hwloc_topology_cpubind_support::get_thread_cpubind
unsigned char get_thread_cpubind
Definition: hwloc.h:976
hwloc_obj::prev_cousin
struct hwloc_obj * prev_cousin
Previous object of same type and depth.
Definition: hwloc.h:354
hwloc_obj_bridge_type_e
hwloc_obj_bridge_type_e
Type of one side (upstream or downstream) of an I/O bridge.
Definition: hwloc.h:252
HWLOC_MEMBIND_MIGRATE
Migrate existing allocated memory. If the memory cannot be migrated and the HWLOC_MEMBIND_STRICT flag...
Definition: hwloc.h:1598
HWLOC_OBJ_BRIDGE_PCI
PCI-side of a bridge.
Definition: hwloc.h:254
hwloc_topology_cpubind_support::get_proc_cpubind
unsigned char get_proc_cpubind
Definition: hwloc.h:968
hwloc_membind_policy_t
hwloc_membind_policy_t
Memory binding policy.
Definition: hwloc.h:1508
hwloc_get_depth_type
hwloc_obj_type_t hwloc_get_depth_type(hwloc_topology_t topology, unsigned depth)
Returns the type of objects at depth depth.
hwloc_get_area_membind
int hwloc_get_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_cpuset_t cpuset, 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...
hwloc_obj_attr_u::hwloc_pcidev_attr_s::class_id
unsigned short class_id
Definition: hwloc.h:498
hwloc_obj_attr_u::hwloc_cache_attr_s::type
hwloc_obj_cache_type_t type
Cache type.
Definition: hwloc.h:488
hwloc_obj_attr_u::hwloc_pcidev_attr_s::dev
unsigned char dev
Definition: hwloc.h:497
HWLOC_MEMBIND_REPLICATE
Replicate memory on the given nodes; reads from this memory will attempt to be serviced from the NUMA...
Definition: hwloc.h:1547
HWLOC_TYPE_DEPTH_UNKNOWN
No object of given type exists in the topology.
Definition: hwloc.h:1079
hwloc_obj::infos_count
unsigned infos_count
Size of infos array.
Definition: hwloc.h:466
HWLOC_OBJ_MACHINE
Machine. The typical root object type. A set of processors and memory with cache coherency.
Definition: hwloc.h:167
hwloc_obj_attr_u::hwloc_group_attr_s
Group-specific Object Attributes.
Definition: hwloc.h:491
hwloc_topology_support::cpubind
struct hwloc_topology_cpubind_support * cpubind
Definition: hwloc.h:1028
hwloc_topology_cpubind_support::set_proc_cpubind
unsigned char set_proc_cpubind
Definition: hwloc.h:966
HWLOC_OBJ_MISC
Miscellaneous objects. Objects without particular meaning, that can e.g. be added by the application ...
Definition: hwloc.h:208
hwloc_obj::os_level
signed os_level
OS-provided physical level, -1 if unknown or meaningless.
Definition: hwloc.h:350
hwloc_const_bitmap_t
struct hwloc_bitmap_s * hwloc_const_bitmap_t
a non-modifiable hwloc_bitmap_t
Definition: bitmap.h:47
hwloc_obj::type
hwloc_obj_type_t type
Type of object.
Definition: hwloc.h:333