hwloc_linux_parse_cpumap_file (3)

This includes helpers for manipulating Linux kernel cpumap files, and hwloc equivalents of the Linux sched_setaffinity and sched_getaffinity system calls.

int hwloc_linux_get_tid_cpubind (\fBhwloc_topology_t\fPtopology, pid_ttid, \fBhwloc_cpuset_t\fPset)

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 (\fBhwloc_topology_t\fPtopology, pid_ttid, \fBhwloc_bitmap_t\fPset)

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, \fBhwloc_cpuset_t\fPset)

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 (\fBhwloc_topology_t\fPtopology, pid_ttid, \fBhwloc_const_cpuset_t\fPset)

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.

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