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hwlocality_object_sets(3)  Hardware Locality (hwloc) hwlocality_object_sets(3)




NAME

       hwlocality_object_sets - Object Sets (hwloc_cpuset_t and
       hwloc_nodeset_t)


SYNOPSIS

   Typedefs
       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


Detailed Description

       Hwloc uses bitmaps to represent two distinct kinds of object sets: CPU
       sets (hwloc_cpuset_t) and NUMA node sets (hwloc_nodeset_t). These types
       are both typedefs to a common back end type (hwloc_bitmap_t), and
       therefore all the hwloc bitmap functions are applicable to both
       hwloc_cpuset_t and hwloc_nodeset_t (see The bitmap API).

       The rationale for having two different types is that even though the
       actions one wants to perform on these types are the same (e.g., enable
       and disable individual items in the set/mask), they're used in very
       different contexts: one for specifying which processors to use and one
       for specifying which NUMA nodes to use. Hence, the name difference is
       really just to reflect the intent of where the type is used.


Typedef Documentation

   typedef hwloc_const_bitmap_t hwloc_const_cpuset_t
       A non-modifiable hwloc_cpuset_t.

   typedef hwloc_const_bitmap_t hwloc_const_nodeset_t
       A non-modifiable hwloc_nodeset_t.

   typedef hwloc_bitmap_t hwloc_cpuset_t
       A CPU set is a bitmap whose bits are set according to CPU physical OS
       indexes. It may be consulted and modified with the bitmap API as any
       hwloc_bitmap_t (see hwloc/bitmap.h).

       Each bit may be converted into a PU object using
       hwloc_get_pu_obj_by_os_index().

   typedef hwloc_bitmap_t hwloc_nodeset_t
       A node set is a bitmap whose bits are set according to NUMA memory node
       physical OS indexes. It may be consulted and modified with the bitmap
       API as any hwloc_bitmap_t (see hwloc/bitmap.h). Each bit may be
       converted into a NUMA node object using
       hwloc_get_numanode_obj_by_os_index().

       When binding memory on a system without any NUMA node, the single main
       memory bank is considered as NUMA node #0.

       See also Converting between CPU sets and node sets.


Author

       Generated automatically by Doxygen for Hardware Locality (hwloc) from
       the source code.



Version 2.4.0                   Thu Nov 26 2020      hwlocality_object_sets(3)

hwloc 2.4.0 - Generated Fri Feb 5 16:30:42 CST 2021
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