[mpich-discuss] broadcast and reduce mechanism

[Gra zeus]

Hello,
Can any one comfirm or link me to documents that explain communication mechanism of MPI_Bcast and MPI_Reduce?
I searched in google and It said Bcast,Reduce can use tree algorithm or sequential communication.However, I can't find any specification that indicate communication mechanism of MPI_Bcast and MPI_Reduce in MPICH2.
thx,gra


      
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