Commit 0e4dcc43 authored by Paul Coffman's avatar Paul Coffman Committed by Rob Latham
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ROMIO One-sided Collective IO Aggregation base code

Optimized collective IO aggregation algorithm added for GPFS which replaces the
existing two-phase aggregation with one-sided MPI_Put and MPI_Get for writing and
reading respectively.  Significant performance and memory optimization possible
for many workloads.  Guarded by the GPFSMPIO_AGGMETHOD environment variable --
see ad_gpfs_tuning.c for details.
Signed-off-by: Rob Latham's avatarRob Latham <>
parent c6c0d6f6
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