Commits on Feb 9, 2024

1. coll/tuned: Extend the collective tuning file to be topology-aware …

   TUNED collectives selection should account for communicator topology
   like HAN. The communicator size and message based algorithm selection logic
   is no longer sufficient to achieve optimal performance when HAN is used.
   The best algorithm differs between inter-node and intra-node for the same
   communicator size and message size based on the tuning results.
   
   This commit introduces topology dimension in both TUNED collective tuning
   file rule and the algorithm selection logic. The topological level can
   be intra-node, internode, or default(mixed).
   
   Specify @inter_node or @intra_node after the message size in the
   dynamic file rules. This is an optional feature so it will not break the
   old file format. See the file example in coll_tuned_dynamic_file.h
   
   Signed-off-by: Jessie Yang <jiaxiyan@amazon.com>

   

   jiaxiyan committed Feb 9, 2024
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