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Kokkos_hwloc.hpp
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43 
44 #ifndef KOKKOS_HWLOC_HPP
45 #define KOKKOS_HWLOC_HPP
46 
47 #include <utility>
48 
49 namespace Kokkos {
50 
63 namespace hwloc {
64 
66 bool available();
67 
72 unsigned get_available_numa_count();
73 
79 
82 
83 } /* namespace hwloc */
84 } /* namespace Kokkos */
85 
86 //----------------------------------------------------------------------------
87 //----------------------------------------------------------------------------
88 // Internal functions for binding persistent spawned threads.
89 
90 namespace Kokkos {
91 namespace hwloc {
92 
102 unsigned thread_mapping( const char * const label ,
103  const bool allow_async ,
104  unsigned & thread_count ,
105  unsigned & use_numa_count ,
106  unsigned & use_cores_per_numa ,
107  std::pair<unsigned,unsigned> threads_coord[] );
108 
118 std::pair<unsigned,unsigned> get_this_thread_coordinate();
119 
121 bool bind_this_thread( const std::pair<unsigned,unsigned> );
122 
123 
125 bool can_bind_threads();
126 
131 unsigned bind_this_thread( const unsigned coordinate_count ,
132  std::pair<unsigned,unsigned> coordinate[] );
133 
135 bool unbind_this_thread();
136 
137 } /* namespace hwloc */
138 } /* namespace Kokkos */
139 
140 //----------------------------------------------------------------------------
141 //----------------------------------------------------------------------------
142 
143 #endif /* #define KOKKOS_HWLOC_HPP */
144 
bool bind_this_thread(const std::pair< unsigned, unsigned >)
Bind the current thread to a core.
std::pair< unsigned, unsigned > get_this_thread_coordinate()
Query core-coordinate of the current thread with respect to the core_topology.
bool can_bind_threads()
Can hwloc bind threads?
unsigned get_available_cores_per_numa()
Query number of available cores per NUMA regions. This will be less than the hardware capacity if the...
unsigned get_available_threads_per_core()
Query number of available &quot;hard&quot; threads per core; i.e., hyperthreads.
unsigned get_available_numa_count()
Query number of available NUMA regions. This will be less than the hardware capacity if the MPI proce...
bool unbind_this_thread()
Unbind the current thread back to the original process binding.
unsigned thread_mapping(const char *const label, const bool allow_async, unsigned &thread_count, unsigned &use_numa_count, unsigned &use_cores_per_numa, std::pair< unsigned, unsigned > threads_coord[])
Recommend mapping of threads onto cores.
bool available()
Query if hwloc is available.