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ResearchOctober 5, 2026

FlashSinkhorn 2: Block-Sparse Entropic Optimal Transport

Streaming GPU solvers for entropic optimal transport (EOT), such as FlashSinkhorn, avoid storing the dense kernel but still evaluate all $n\times m$ point pairs in every Sinkhorn iteration. We present \textbf{FlashSinkhorn~2} (FS2), a solver for squared-Euclidean cost on…

Felix X. -F. Ye, Yu Chin Fabian Lim, Naigang Wang, Davis Wertheimer·arXiv — cs.AI
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Key Takeaways
  • 01.Streaming GPU solvers for entropic optimal transport (EOT), such as FlashSinkhorn, avoid storing the dense kernel but still evaluate all $n\times m$ point pairs in every Sinkhorn iteration
  • 02.We present \textbf{FlashSinkhorn~2} (FS2), a solver for squared-Euclidean cost on…

This material is provided as an extended analytical summary.

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