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External Memory Breadth First Search Problem

Solve BFS level decomposition on huge sparse graphs efficiently with External Memory BFS algorithms. Minimize I/O steps for optimal data transfer. Explore deterministic and randomized clustering approaches for better results. Utilize MADALGO implementation.

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External Memory Breadth First Search Problem

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  1. L(t-2) L(t-1) L(t) b d f N(b) N(c) a c d a b d e d e a c d b e a d e s a c e N(L(t-1)) –dupl. – L(t-1) – L(t-2) Deepak Ajwani Max-Planck-Institute for Informatics External Memory Breadth First Search Problem: Given a massive sparse undirected graph, compute its BFS level decomposition BFS algorithm by Munagala and Ranade • External memory: D disks • Data transfer in blocks of size B (~1M) • Up to D·B elements transfer in one I/O Goal: Minimize total number of I/O steps Mehlhorn and Meyer BFS algorithm - Randomized clustering Mehlhorn and Meyer BFS algorithm - Deterministic clustering * * * Implementation MADALGO – Center for Massive Data Algorithmics, a Center of the Danish National Research Foundation

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