Parallel Integer Sort: Theory and Practice
CoRR(2024)
摘要
Integer sorting is a fundamental problem in computer science. This paper
studies parallel integer sort both in theory and in practice. In theory, we
show tighter bounds for a class of existing practical integer sort algorithms,
which provides a solid theoretical foundation for their widespread usage in
practice and strong performance. In practice, we design a new integer sorting
algorithm, , that is theoretically-efficient and has good
practical performance.
In particular, overcomes a common challenge in existing
parallel integer sorting algorithms, which is the difficulty of detecting and
taking advantage of duplicate keys. The key insight in is
to combine algorithmic ideas from both integer- and comparison-sorting
algorithms. In our experiments, achieves competitive or
better performance than existing state-of-the-art parallel integer and
comparison sorting algorithms on various synthetic and real-world datasets.
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