Bridge reduces All-to-All completion time by typically 3x to 10x and improves AllReduce by up to 6.6x over Ring by reusing optical subrings across multiple steps in reconfigurable networks.
Alibaba hpn: A data center network for large language model training
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2026 7representative citing papers
PolyChartQA is a new mid-scale dataset for multi-chart question answering that reveals a 27.4% accuracy drop for multimodal models on human-authored questions compared to AI-generated ones, plus a modest gain from a proposed prompting method.
OptCC is a pipelined AllReduce algorithm that completes within 2-6% of fault-free NCCL performance under up to 50% bandwidth loss by approaching a new lower bound showing O(1/p) unavoidable overhead for p GPUs.
Symphony detects step misalignments in ring collectives via lightweight in-network tracking and mitigates them by throttling outpacing flows with congestion signals, yielding up to 54% better communication times in Astra-Sim simulations and a Tofino2 prototype.
ReTri achieves all-to-all in ⌈log₃ n⌉ phases for ORNs by co-designing bidirectional exchanges and reconfiguration strategy, with simulations showing up to 10× improvement over static and 2.1× over prior reconfigurable Bruck.
DAT combines a small-large model cascade with fine-tuning and bandwidth-aware multi-stream transmission to deliver high-accuracy event recognition and low-latency alerts for video streams in edge-cloud systems.
A hierarchical review of energy storage technologies for smoothing the sub-second variable loads of AI data centers on the utility grid.
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