numa_traits.hpp

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/******************************************************************************
**
** Copyright © 2019 by J.M.McGuiness, coder@hussar.me.uk
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License as published by the Free Software Foundation; either
** version 2.1 of the License, or (at your option) any later version.
**
** This library is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public
** License along with this library; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
 
// Auto-generated header file.
// DO NOT EDIT. IT WILL BE OVERWRITTEN.
// Version: release_567_1_gd08f7
 
/**
   \file The contents of this file may not be correct for your system. It may be wise to regenerate it using 'create_numa_traits_hdr.sh NUMA_TRAITS_HPP_FILE VERSION_NUMBER' in the installation location as a suitable user.
*/
 
#include "core/config.h"
 
#include <array>
 
namespace jmmcg { namespace LIBJMMCG_VER_NAMESPACE { namespace ppd {
 
   struct numa_cpu_traits {
      enum : std::size_t {
         total_cores=12
      };
      enum : bool {
         is_numa=true
      };
      using element_type=std::array<std::array<unsigned short, 6>, 2>;
      /// This provides a mapping of all sequentially-listed NUMA-nodes to the cores they contain and the mapping of those cores to to that returned by numactl and /proc/cpuinfo.
      /**
         So one can use this mapping to pin, set priority, etc physical OS-threads and assign tasks to them as appropriate to make more efficient use of the NUMA topology of the target system.
         Note that kernel options such as CONFIG_NUMA, CONFIG_NUMA_BALANCING, CONFIG_NUMA_BALANCING_DEFAULT_ENABLED, etc may need to be enabled.
      */
      static inline constexpr element_type node_mapping{{{0, 1, 2, 3, 4, 5}, {6, 7, 8, 9, 10, 11}}};
   };
 
} } }