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About this paper
Huaizhi Zhang, Jiacheng Zhu, Xuqi Zhu, Junkyu Lee, Klaus McDonald-Maier, Xiaojun Zhai
MARS reduces prefill time to first token by temporarily replicating key/value cache blocks, scheduling their movement alongside computation, and retiring copies before decoding. In a 16K-prefill test at 16 logical nodes, it reports 0.62 seconds versus 1.91 for Ring Attention, while transferring 5.12 GiB versus 4.40. The result is a latency-traffic tradeoff; short-prompt benefits may be smaller.
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