The SprayList: a scalable relaxed priority queue

  title={The SprayList: a scalable relaxed priority queue},
  author={Dan Alistarh and Justin Kopinsky and Jerry Li and Nir Shavit},
High-performance concurrent priority queues are essential for applications such as task scheduling and discrete event simulation. Unfortunately, even the best performing implementations do not scale past a number of threads in the single digits. This is because of the sequential bottleneck in accessing the elements at the head of the queue in order to perform a DeleteMin operation. In this paper, we present the SprayList, a scalable priority queue with relaxed ordering semantics. Starting from… CONTINUE READING
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