- "Expected to raise p90 interactivity from c16 up, where the spread term is 41% (c16), 47% (c32) and 71% (c64) of the decode gap, and to leave c1-c8 flat, where it is 11-12%. Throughput should not move at c1-c32, which the AgentX trace paces rather than the GPU (lane duty cycle 17-22%), and may rise at c64, where MI355X already reaches 49.9%. TTFT may regress slightly because the same prefill is cut into more chunks; TTFT does not enter the interactivity metric. No controlled A/B for this knob exists in the published runs, so the sweep decides."
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