hwlocality_linux(3) Hardware Locality (hwloc) hwlocality_linux(3)NAME
hwlocality_linux - Linux-specific helpers
Functions
int hwloc_linux_parse_cpumap_file (FILE *file, hwloc_cpuset_t set)
int hwloc_linux_set_tid_cpubind (hwloc_topology_t topology, pid_t tid,
hwloc_const_cpuset_t set)
int hwloc_linux_get_tid_cpubind (hwloc_topology_t topology, pid_t tid,
hwloc_cpuset_t set)
int hwloc_linux_get_tid_last_cpu_location (hwloc_topology_t topology,
pid_t tid, hwloc_bitmap_t set)
Detailed Description
This includes helpers for manipulating Linux kernel cpumap files, and
hwloc equivalents of the Linux sched_setaffinity and sched_getaffinity
system calls.
Function Documentation
int hwloc_linux_get_tid_cpubind (hwloc_topology_t topology, pid_t tid,
hwloc_cpuset_t set)
Get the current binding of thread tid. The behavior is exactly the same
as the Linux sched_getaffinity system call, but uses a hwloc cpuset.
Note:
This is equivalent to calling hwloc_get_proc_cpubind() with
HWLOC_CPUBIND_THREAD as flags.
int hwloc_linux_get_tid_last_cpu_location (hwloc_topology_t topology, pid_t
tid, hwloc_bitmap_t set)
Get the last physical CPU where thread tid ran.
Note:
This is equivalent to calling hwloc_get_proc_last_cpu_location()
with HWLOC_CPUBIND_THREAD as flags.
int hwloc_linux_parse_cpumap_file (FILE * file, hwloc_cpuset_t set)
Convert a linux kernel cpumap file file into hwloc CPU set. Might be
used when reading CPU set from sysfs attributes such as topology and
caches for processors, or local_cpus for devices.
int hwloc_linux_set_tid_cpubind (hwloc_topology_t topology, pid_t tid,
hwloc_const_cpuset_t set)
Bind a thread tid on cpus given in cpuset set. The behavior is exactly
the same as the Linux sched_setaffinity system call, but uses a hwloc
cpuset.
Note:
This is equivalent to calling hwloc_set_proc_cpubind() with
HWLOC_CPUBIND_THREAD as flags.
Author
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Version 1.11.1 Thu Oct 15 2015 hwlocality_linux(3)
