Hardware Locality (hwloc)
1.7.2
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Typedefs | |
typedef enum hwloc_obj_cache_type_e | hwloc_obj_cache_type_t |
typedef enum hwloc_obj_bridge_type_e | hwloc_obj_bridge_type_t |
typedef enum hwloc_obj_osdev_type_e | hwloc_obj_osdev_type_t |
Functions | |
int | hwloc_compare_types (hwloc_obj_type_t type1, hwloc_obj_type_t type2) |
typedef enum hwloc_obj_bridge_type_e hwloc_obj_bridge_type_t |
Type of one side (upstream or downstream) of an I/O bridge.
typedef enum hwloc_obj_cache_type_e hwloc_obj_cache_type_t |
Cache type.
typedef enum hwloc_obj_osdev_type_e hwloc_obj_osdev_type_t |
Type of a OS device.
Type of a OS device.
enum hwloc_obj_type_t |
Type of topology object.
Enumerator | |
---|---|
HWLOC_OBJ_SYSTEM |
Whole system (may be a cluster of machines). The whole system that is accessible to hwloc. That may comprise several machines in SSI systems like Kerrighed. |
HWLOC_OBJ_MACHINE |
Machine. The typical root object type. A set of processors and memory with cache coherency. |
HWLOC_OBJ_NODE |
NUMA node. A set of processors around memory which the processors can directly access. |
HWLOC_OBJ_SOCKET |
Socket, physical package, or chip. In the physical meaning, i.e. that you can add or remove physically. |
HWLOC_OBJ_CACHE |
Cache. Can be L1i, L1d, L2, L3, ... |
HWLOC_OBJ_CORE |
Core. A computation unit (may be shared by several logical processors). |
HWLOC_OBJ_PU |
Processing Unit, or (Logical) Processor. An execution unit (may share a core with some other logical processors, e.g. in the case of an SMT core). Objects of this kind are always reported and can thus be used as fallback when others are not. |
HWLOC_OBJ_GROUP |
Group objects. Objects which do not fit in the above but are detected by hwloc and are useful to take into account for affinity. For instance, some operating systems expose their arbitrary processors aggregation this way. And hwloc may insert such objects to group NUMA nodes according to their distances. These objects are ignored when they do not bring any structure. |
HWLOC_OBJ_MISC |
Miscellaneous objects. Objects without particular meaning, that can e.g. be added by the application for its own use. |
HWLOC_OBJ_BRIDGE |
Bridge. Any bridge that connects the host or an I/O bus, to another I/O bus. Bridge objects have neither CPU sets nor node sets. They are not added to the topology unless I/O discovery is enabled with hwloc_topology_set_flags(). |
HWLOC_OBJ_PCI_DEVICE |
PCI device. These objects have neither CPU sets nor node sets. They are not added to the topology unless I/O discovery is enabled with hwloc_topology_set_flags(). |
HWLOC_OBJ_OS_DEVICE |
Operating system device. These objects have neither CPU sets nor node sets. They are not added to the topology unless I/O discovery is enabled with hwloc_topology_set_flags(). |
HWLOC_OBJ_TYPE_MAX |
Sentinel value |
int hwloc_compare_types | ( | hwloc_obj_type_t | type1, |
hwloc_obj_type_t | type2 | ||
) | const |
Compare the depth of two object types.
Types shouldn't be compared as they are, since newer ones may be added in the future. This function returns less than, equal to, or greater than zero respectively if type1
objects usually include type2
objects, are the same as type2
objects, or are included in type2
objects. If the types can not be compared (because neither is usually contained in the other), HWLOC_TYPE_UNORDERED is returned. Object types containing CPUs can always be compared (usually, a system contains machines which contain nodes which contain sockets which contain caches, which contain cores, which contain processors).