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Subject: [OMPI devel] RFC: change default for tuned alltoallv to pairwise
From: Nathan Hjelm (hjelmn_at_[hidden])
Date: 2012-03-21 12:14:25

What: Change coll tuned default to pairwise exchange

Why: The linear algorithm does not scale to any reasonable number of PEs

When: Timeout in 2 days (Fri)

Is there any reason the default should not be changed?