A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
We propose extending common performance measurement and visualization tools to identify network bottlenecks within MPI collectives. By creating additional trace points in the Peruse utility of Open MPI, we track low-level InfiniBand communication events and then visualize the communication profile in Boxfish for a more comprehensive analysis. The proposed tool-chain is non-intrusive and incurs less than 0.1% runtime overhead with the NPB FT benchmark.doi:10.1145/2642769.2642789 dblp:conf/pvm/BrownDM14 fatcat:7jni3k5ydva7pnapfp74f36yyi