Provided by: libhwloc-doc_2.9.2-1_all
NAME
hwlocality_helper_distribute - Distributing items over a topology
SYNOPSIS
Enumerations enum hwloc_distrib_flags_e { HWLOC_DISTRIB_FLAG_REVERSE } Functions static int hwloc_distrib (hwloc_topology_t topology, hwloc_obj_t *roots, unsigned n_roots, hwloc_cpuset_t *set, unsigned n, int until, unsigned long flags)
Detailed Description
Enumeration Type Documentation
enum hwloc_distrib_flags_e Flags to be given to hwloc_distrib(). Enumerator HWLOC_DISTRIB_FLAG_REVERSE Distrib in reverse order, starting from the last objects.
Function Documentation
static int hwloc_distrib (hwloc_topology_t topology, hwloc_obj_t * roots, unsigned n_roots, hwloc_cpuset_t * set, unsigned n, int until, unsigned long flags) [inline], [static] Distribute n items over the topology under roots. Array set will be filled with n cpusets recursively distributed linearly over the topology under objects roots, down to depth until (which can be INT_MAX to distribute down to the finest level). n_roots is usually 1 and roots only contains the topology root object so as to distribute over the entire topology. 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. flags should be 0 or a OR'ed set of hwloc_distrib_flags_e. Returns 0 on success, -1 on error. Note This function requires the roots objects to have a CPU set.
Author
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