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arXiv · 2105.11788

A linear parallel algorithm to compute bisimulation and relational coarsest partitions

Jan Martens·Jan Friso Groote·Lars van den Haak·Pieter Hijma·Anton Wijs
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Abstract

The most efficient way to calculate strong bisimilarity is by calculation the relational coarsest partition on a transition system. We provide the first linear time algorithm to calculate strong bisimulation using parallel random access machines (PRAMs). More precisely, with $n$ states, $m$ transitions and $|\mathit{Act}|\leq m$ action labels, we provide an algorithm on $max(n,m)$ processors that calculates strong bisimulation in time $O(n+|\mathit{Act}|)$ and space $O(n+m)$. The best-known PRAM algorithm has time complexity $O(n\log n)$ on a smaller number of processors making it less suitable for massive parallel devices such as GPUs. An implementation on a GPU shows that the linear time-bound is achievable on contemporary hardware.

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Jan Martens, Jan Friso Groote, Lars van den Haak, Pieter Hijma, Anton Wijs. 2021-05-25. A linear parallel algorithm to compute bisimulation and relational coarsest partitions. https://arxiv.org/abs/2105.11788

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