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Review regressions before expanding the test." ], "measure": "Requests meeting your latency target, throughput, failures, and cost per successful request.", "decision": "Keep the change only if it meets your preselected quality and latency limits and improves the metric you care about after setup and operating costs. Otherwise retain the baseline. This is an exploration plan, not a validated recommendation." }, "builder_review": null, "arxiv_id": "2609.37626", "title": "SPLASH: Switching Parallel Layouts of Attention with Seamless Handoff for LLM Serving", "summary": "The method replaces serving engines that fix one attention parallel layout (tensor, data-parallel, or context parallelism) at launch with a system that switches layouts during request execution, reusing already-placed KV cache and weights and handing off at batch boundaries, plus a new Decoupled Ownership Parallelism layout offering 27-60% more KV capacity. 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