OpenMPI
0.1.1
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This includes helpers for manipulating linux kernel cpumap files, and hwloc equivalents of the Linux sched_setaffinity and sched_getaffinity system calls. More...
Functions | |
HWLOC_DECLSPEC int | hwloc_linux_parse_cpumap_file (FILE *file, hwloc_cpuset_t set) |
Convert a linux kernel cpumap file file into hwloc CPU set. More... | |
HWLOC_DECLSPEC 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 . More... | |
HWLOC_DECLSPEC int | hwloc_linux_get_tid_cpubind (hwloc_topology_t topology, pid_t tid, hwloc_cpuset_t set) |
Get the current binding of thread tid . More... | |
This includes helpers for manipulating linux kernel cpumap files, and hwloc equivalents of the Linux sched_setaffinity and sched_getaffinity system calls.
HWLOC_DECLSPEC 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.
HWLOC_DECLSPEC 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.
References hwloc_bitmap_set_ith_ulong(), and hwloc_bitmap_zero().
Referenced by hwloc_cuda_get_device_cpuset(), hwloc_cudart_get_device_cpuset(), and hwloc_ibv_get_device_cpuset().
HWLOC_DECLSPEC 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.