arXiv: cs.AI preprintsInternational6 November 2026
KOSMOS: Self-scheduling Persistent Kernels for Communication-Compute Overlap
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arXiv:2611.07477v1 Announce Type: cross Abstract: Tensor and sequence parallelism (TP+SP) and expert parallelism (EP) put collectives on the critical path of transformer layers. State-of-the-art fused kernels mitigate this with fixed roles or schedules, but this rigidity leaves large idle windows. Predicting a communication-computation split does not remove them either; a predetermined split cannot follow data readiness. We present KOSMOS, a library for self-scheduling persistent kernels whose workgroups use queues ordered by consumer demand to switch between communication and computation role
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