[mpich-discuss] Algorithms used in implementation of collective operations like Allgather , Bcast etc.

[Mahesh Doijade]

Hi,
     I want to know which algorithm is used in implementation of  Collective
Operations like Allgather, Bcast , gather and Scatter. Is it tree based
algorithm or Linear Ring algorithm or both with some threshold during which
each is used, and if some other kind of algorithms are also been
used. Please let me know in a elaborate manner.
Best Regards
--Mahesh Doijade
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