hwlocality_helper_distributHardware Locality (hhwlocality_helper_distribute(3)
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.
Note
This function requires the roots objects to have a CPU set.
This function replaces the now deprecated hwloc_distribute() and
hwloc_distributev() functions.
Author
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Version 2.7.0 Thu Jun 16 2022hwlocality_helper_distribute(3)
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