How do I know Non-uniform Memory Access (NUMA) layout on Scholar?

  • You can learn about processor layout on Scholar nodes using the following command:
    scholar-a000:~$ lstopo-no-graphics
  • For detailed IO connectivity:
    scholar-a000:~$ lstopo-no-graphics --physical --whole-io
  • Please note that NUMA information is useful for advanced MPI/OpenMP/GPU optimizations. For most users, using default NUMA settings in MPI or OpenMP would give you the best performance.
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