CPU and node sets of entire topologies

Functions

hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset (hwloc_topology_t topology)
hwloc_const_cpuset_t hwloc_topology_get_topology_cpuset (hwloc_topology_t topology)
hwloc_const_cpuset_t hwloc_topology_get_allowed_cpuset (hwloc_topology_t topology)
hwloc_const_nodeset_t hwloc_topology_get_complete_nodeset (hwloc_topology_t topology)
hwloc_const_nodeset_t hwloc_topology_get_topology_nodeset (hwloc_topology_t topology)
hwloc_const_nodeset_t hwloc_topology_get_allowed_nodeset (hwloc_topology_t topology)

Function Documentation

hwloc_const_cpuset_t hwloc_topology_get_allowed_cpuset ( hwloc_topology_t  topology  ) 

Get allowed CPU set.

Returns:
the CPU set of allowed logical processors of the system.
Note:
If the topology flag HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM was not set, this is identical to hwloc_topology_get_topology_cpuset(), which means all PUs are allowed.
If HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM was set, applying hwloc_bitmap_intersects() on the result of this function and on an object cpuset checks whether there are allowed PUs inside that object. Applying hwloc_bitmap_and() returns the list of these allowed PUs.
The returned cpuset is not newly allocated and should thus not be changed or freed, hwloc_bitmap_dup() must be used to obtain a local copy.
hwloc_const_nodeset_t hwloc_topology_get_allowed_nodeset ( hwloc_topology_t  topology  ) 

Get allowed node set.

Returns:
the node set of allowed memory of the system.
Note:
If the topology flag HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM was not set, this is identical to hwloc_topology_get_topology_nodeset(), which means all NUMA nodes are allowed.
If HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM was set, applying hwloc_bitmap_intersects() on the result of this function and on an object nodeset checks whether there are allowed NUMA nodes inside that object. Applying hwloc_bitmap_and() returns the list of these allowed NUMA nodes.
The returned nodeset is not newly allocated and should thus not be changed or freed, hwloc_bitmap_dup() must be used to obtain a local copy.
hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset ( hwloc_topology_t  topology  ) 

Get complete CPU set.

Returns:
the complete CPU set of logical processors of the system.
Note:
The returned cpuset is not newly allocated and should thus not be changed or freed; hwloc_bitmap_dup() must be used to obtain a local copy.
This is equivalent to retrieving the root object complete CPU-set.
hwloc_const_nodeset_t hwloc_topology_get_complete_nodeset ( hwloc_topology_t  topology  ) 

Get complete node set.

Returns:
the complete node set of memory of the system.
Note:
The returned nodeset is not newly allocated and should thus not be changed or freed; hwloc_bitmap_dup() must be used to obtain a local copy.
This is equivalent to retrieving the root object complete nodeset.
hwloc_const_cpuset_t hwloc_topology_get_topology_cpuset ( hwloc_topology_t  topology  ) 

Get topology CPU set.

Returns:
the CPU set of logical processors of the system for which hwloc provides topology information. This is equivalent to the cpuset of the system object.
Note:
The returned cpuset is not newly allocated and should thus not be changed or freed; hwloc_bitmap_dup() must be used to obtain a local copy.
This is equivalent to retrieving the root object CPU-set.
hwloc_const_nodeset_t hwloc_topology_get_topology_nodeset ( hwloc_topology_t  topology  ) 

Get topology node set.

Returns:
the node set of memory of the system for which hwloc provides topology information. This is equivalent to the nodeset of the system object.
Note:
The returned nodeset is not newly allocated and should thus not be changed or freed; hwloc_bitmap_dup() must be used to obtain a local copy.
This is equivalent to retrieving the root object nodeset.

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