High-Quality Shared-Memory Graph Partitioning

Partitioning graphs into blocks of roughly equal size such that few edges run between blocks is a frequently needed operation in processing graphs. Recently, size, variety, and structural complexity of these networks has grown dramatically. Unfortunately, previous approaches to parallel graph partit...

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Bibliographic Details
Published in:IEEE transactions on parallel and distributed systems Vol. 31; no. 11; pp. 2710 - 2722
Main Authors: Akhremtsev, Yaroslav, Sanders, Peter, Schulz, Christian
Format: Journal Article
Language:English
Published: New York IEEE 01.11.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Balance criterion
Clustering algorithms
Complex networks
Contracts
Graphs
label propagation
local search
Parallel algorithms
Parallel graph partitioning
Partitioning
Partitioning algorithms
Program processors
shared-memory parallelism
ISSN:1045-9219, 1558-2183
Online Access:Get full text
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Summary:Partitioning graphs into blocks of roughly equal size such that few edges run between blocks is a frequently needed operation in processing graphs. Recently, size, variety, and structural complexity of these networks has grown dramatically. Unfortunately, previous approaches to parallel graph partitioning have problems in this context since they often show a negative trade-off between speed and quality. We present an approach to multi-level shared-memory parallel graph partitioning that produces balanced solutions, shows high speedups for a variety of large graphs and yields very good quality independently of the number of cores used. For example, in an extensive experimental study, at 79 cores, one of our closest competitors is faster but fails to meet the balance criterion in the majority of cases and another is mostly slower and incurs about 13 percent larger cut size. Important ingredients include parallel label propagation for both coarsening and refinement, parallel initial partitioning, a simple yet effective approach to parallel localized local search, and fast locality preserving hash tables.
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ISSN:1045-9219
1558-2183
DOI:10.1109/TPDS.2020.3001645