GraphSER: Distance-Aware Stream-Based Edge Repartition for Many-Core Systems

Abstract

With the explosive growth of graph data, distributed graph processing has become popular, and many graph hardware accelerators use distributed frameworks. Graph partitioning is foundation in distributed graph processing. However, dynamic changes in graph make existing partitioning shifted from its optimized points and cause system performance degraded. Therefore, more efficient dynamic graph partition methods are needed. In this work, we propose GraphSER, a dynamic graph partition method for many-core systems. To improve the cross-node spatial locality and reduce the overhead of repartition, we propose a stream-based edge repartition, in which each computing node sequentially traverses its local edge list in parallel, then migrating edges based on distance and replica degree. GraphSER does not need costly searching and prioritizes nodes so it can avoid poor cross-node spatial locality. Our evaluation shows that compared to state-of-the-art edge repartition software methods, GraphSER has an average speedup of 1.52×, with the maximum up to 2×. Compared to the previous many-core hardware repartition method, GraphSER performance has an average of 40% improvement, with the maximum to 117%.