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Conversion between cpuset and nodeset

Conversion between cpuset and nodeset

Section: Hardware Locality (hwloc) (3) Updated: Thu Apr 14 2011
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NAME

Conversion between cpuset and nodeset -  

Functions


static inline void hwloc_cpuset_to_nodeset (hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, hwloc_nodeset_t nodeset)

static inline void hwloc_cpuset_to_nodeset_strict (struct hwloc_topology *topology, hwloc_const_cpuset_t cpuset, hwloc_nodeset_t nodeset)

static inline void hwloc_cpuset_from_nodeset (hwloc_topology_t topology, hwloc_cpuset_t cpuset, hwloc_const_nodeset_t nodeset)

static inline 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 inline void hwloc_cpuset_from_nodeset (hwloc_topology_ttopology, hwloc_cpuset_tcpuset, hwloc_const_nodeset_tnodeset) [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 inline void hwloc_cpuset_from_nodeset_strict (struct hwloc_topology *topology, hwloc_cpuset_tcpuset, hwloc_const_nodeset_tnodeset) [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 inline void hwloc_cpuset_to_nodeset (hwloc_topology_ttopology, hwloc_const_cpuset_tcpuset, hwloc_nodeset_tnodeset) [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 inline void hwloc_cpuset_to_nodeset_strict (struct hwloc_topology *topology, hwloc_const_cpuset_tcpuset, hwloc_nodeset_tnodeset) [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

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


 

Index

NAME
Functions
Detailed Description
Function Documentation
static inline void hwloc_cpuset_from_nodeset (hwloc_topology_ttopology, hwloc_cpuset_tcpuset, hwloc_const_nodeset_tnodeset) [static]
static inline void hwloc_cpuset_from_nodeset_strict (struct hwloc_topology *topology, hwloc_cpuset_tcpuset, hwloc_const_nodeset_tnodeset) [static]
static inline void hwloc_cpuset_to_nodeset (hwloc_topology_ttopology, hwloc_const_cpuset_tcpuset, hwloc_nodeset_tnodeset) [static]
static inline void hwloc_cpuset_to_nodeset_strict (struct hwloc_topology *topology, hwloc_const_cpuset_tcpuset, hwloc_nodeset_tnodeset) [static]
Author

This document was created by man2html, using the manual pages.
Time: 07:56:37 GMT, June 15, 2011