DrainSinkhorn: Safe Elimination for Batched Entropic Optimal Transport
Fast entropic optimal transport backends reduce the cost of each Sinkhorn update, but static batches still run at full width until the slowest problem finishes. We introduce DrainSinkhorn, a verifier-gated active-packing layer for batches of independent Sinkhorn problems. It combines candidate-axis packing, a Sinkhorn-specific one-sided screen, verifier-gated retirement under the backend's configured two-sided residual check, and physical compaction of all candidate-indexed state. The EOT objective, per-instance Sinkhorn map, and stopping rule are unchanged; later kernels run only on unfinished problems. We characterize the removable work exactly. If completion depths differ within a pack...
| Authors | Xinyang Wen |
|---|---|
| Primary category | cs.DC |
| Published | 27 July 2026 |
| Last updated at source | 3 September 2026 |
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