Thomas Messi Nguélé ; Jean-François Méhaut - Applying Data Structure Succinctness to Graph Numbering For Efficient Graph Analysis

arima:8349 - Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, February 17, 2022, Volume 32 - 2019 - 2021 -
Applying Data Structure Succinctness to Graph Numbering For Efficient Graph Analysis

Authors: Thomas Messi Nguélé ; Jean-François Méhaut

Graph algorithms have inherent characteristics, including data-driven computations and poor locality. These characteristics expose graph algorithms to several challenges, because most well studied (parallel) abstractions and implementation are not suitable for them. In our previous work [21, 22, 24], we show how to use some complex-network properties, including community structure and heterogeneity of node degree, to improve performance, by a proper memory management (Cn-order) and an appropriate thread scheduling (comm-deg-scheduling). In recent work [23], Besta et al. proposed log(graph), a graph representation that outperforms existing graph compression algorithms. In this paper, we show that our graph numbering heuristic and our scheduling heuristics can be improved when they are combined with log(graph) data structure. Experiments were made on multi-core machines. For example, on one node of a multi-core machine (Troll from Grid'5000), we showed that when combining our previously proposed heuristics with graph compression, with Pagerank being executing on Live Journal dataset, we can reduce with cn-order: cache-references from 29.94% (without compression) to 39.56% (with compression), cache-misses from 37.87% to 51.90% and hence time from 18.93% to 28.66%.

Volume: Volume 32 - 2019 - 2021
Published on: February 17, 2022
Accepted on: January 17, 2022
Submitted on: August 10, 2021
Keywords: graph compression,graph ordering,cache misses reduction,[INFO]Computer Science [cs]


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