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Changyong Shin

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Preprint Sep 2026

GeoMesh: Workload-Balanced and Sign-Compressed Geo-Distributed LLM Training

GeoMesh is presented, a synchronous geo-distributed training framework for heterogeneous GPUs that balances per-worker workloads by assigning each GPU a suitable batch size and number of inner steps, so faster GPUs do more useful work instead of waiting.

Changyong Shin, Jaerim Park, Mi-Gyung Kang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Parallelism Strategy Chaining for Fast Training Convergence

This paper proposes CONA, a new training method that introduces online strategy chaining, which ranks candidate strategies during training using a surrogate metric built from compute throughput and gradient statistics, and switches the current strategy to a new strategy with a higher metric.

Mi-Gyung Kang, Changyong Shin, Younghun Go et al. · 0 citations

Enabling KV Caching of Shared Prefix for Diffusion Language Models

Bidirectional prefix caching, BiCache, the first KV caching technique for shared prefixes in DLMs is proposed, which dynamically identifies a safe layer depth for reusing shared prefix KVs and eliminates redundant computation.

Younghun Go, Jaehoon Han, Changyong Shin et al. · 0 citations

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