There are comments in the source code. See src/mpi/coll/barrier.c Rajeev On Jun 16, 2013, at 9:59 PM, pinak panigrahi wrote:

Hi, I would like to know what algorithms are used for MPI_Barrier implementation in MPICH ... specifically, for intra-node MPI calls !

-- Pinak Panigrahi pursuing Masters in Computer Science at Sri Sathya Sai Institute Of Higher Learning, Puttaparti, India.

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