Distributing items over a topology

Functions
static __hwloc_inline void	hwloc_distributev (hwloc_topology_t topology, hwloc_obj_t *root, unsigned n_roots, hwloc_cpuset_t *cpuset, unsigned n, unsigned until)
static __hwloc_inline void	hwloc_distribute (hwloc_topology_t topology, hwloc_obj_t root, hwloc_cpuset_t *set, unsigned n, unsigned until)

Detailed Description

Function Documentation

static __hwloc_inline void hwloc_distribute ( hwloc_topology_t  topology, hwloc_obj_t  root, hwloc_cpuset_t *  set, unsigned  n, unsigned  until  )

static

static __hwloc_inline void hwloc_distributev ( hwloc_topology_t  topology, hwloc_obj_t *  roots, unsigned  n_roots, hwloc_cpuset_t *  set, unsigned  n, unsigned  until  )

static

Distribute n items over the topology under root.

Distribute n items over the topology under roots.

Array cpuset will be filled with n cpusets recursively distributed linearly over the topology under root, down to depth until (which can be INT_MAX to distribute down to the finest level).

This is typically useful when an application wants to distribute n threads over a machine, giving each of them as much private cache as possible and keeping them locally in number order.

The caller may typically want to also call hwloc_bitmap_singlify() before binding a thread so that it does not move at all.

Note

This function requires the root object to have a CPU set.

This is the same as hwloc_distribute, but takes an array of roots instead of just one root.

Note

This function requires the roots objects to have a CPU set.