hwlocality_helper_nodeset_cHardware)Localihwlocality_helper_nodeset_convert(3)NAMEhwlocality_helper_nodeset_convert - Converting between CPU sets and
node sets
Functions
static void hwloc_cpuset_to_nodeset (hwloc_topology_t topology,
hwloc_const_cpuset_t _cpuset, hwloc_nodeset_t nodeset)
static void hwloc_cpuset_to_nodeset_strict (struct hwloc_topology
*topology, hwloc_const_cpuset_t _cpuset, hwloc_nodeset_t nodeset)
static void hwloc_cpuset_from_nodeset (hwloc_topology_t topology,
hwloc_cpuset_t _cpuset, hwloc_const_nodeset_t nodeset)
static void hwloc_cpuset_from_nodeset_strict (struct hwloc_topology
*topology, hwloc_cpuset_t _cpuset, hwloc_const_nodeset_t nodeset)
Detailed Description
There are two semantics for converting cpusets to nodesets depending on
how non-NUMA machines are handled.
When manipulating nodesets for memory binding, non-NUMA machines should
be considered as having a single NUMA node. The standard conversion
routines below should be used so that marking the first bit of the
nodeset means that memory should be bound to a non-NUMA whole machine.
When manipulating nodesets as an actual list of NUMA nodes without any
need to handle memory binding on non-NUMA machines, the strict
conversion routines may be used instead.
Function Documentation
static void hwloc_cpuset_from_nodeset (hwloc_topology_t topology,
hwloc_cpuset_t _cpuset, hwloc_const_nodeset_t nodeset) [inline],
[static]
Convert a NUMA node set into a CPU set and handle non-NUMA cases. If
the topology contains no NUMA nodes, the machine is considered as a
single memory node, and the following behavior is used: If nodeset is
empty, cpuset will be emptied as well. Otherwise cpuset will be
entirely filled. This is useful for manipulating memory binding sets.
static void hwloc_cpuset_from_nodeset_strict (struct hwloc_topology *
topology, hwloc_cpuset_t _cpuset, hwloc_const_nodeset_t nodeset)
[inline], [static]
Convert a NUMA node set into a CPU set without handling non-NUMA cases.
This is the strict variant of hwloc_cpuset_from_nodeset(). It does not
fix non-NUMA cases. If the topology contains some NUMA nodes, behave
exactly the same. However, if the topology contains no NUMA nodes,
return an empty cpuset.
static void hwloc_cpuset_to_nodeset (hwloc_topology_t topology,
hwloc_const_cpuset_t _cpuset, hwloc_nodeset_t nodeset) [inline],
[static]
Convert a CPU set into a NUMA node set and handle non-NUMA cases. If
some NUMA nodes have no CPUs at all, this function never sets their
indexes in the output node set, even if a full CPU set is given in
input.
If the topology contains no NUMA nodes, the machine is considered as a
single memory node, and the following behavior is used: If cpuset is
empty, nodeset will be emptied as well. Otherwise nodeset will be
entirely filled.
static void hwloc_cpuset_to_nodeset_strict (struct hwloc_topology *
topology, hwloc_const_cpuset_t _cpuset, hwloc_nodeset_t nodeset)
[inline], [static]
Convert a CPU set into a NUMA node set without handling non-NUMA cases.
This is the strict variant of hwloc_cpuset_to_nodeset(). It does not
fix non-NUMA cases. If the topology contains some NUMA nodes, behave
exactly the same. However, if the topology contains no NUMA nodes,
return an empty nodeset.
Author
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the source code.
Version 1.11.1 Thu Oct 15hwlocality_helper_nodeset_convert(3)
