@article{hetcclacceleratingllmtrainingwithheterog, title = {HetCCL: Accelerating LLM Training with Heterogeneous GPUs}, author = {Heehoon Kim and Jaehwan Lee and Taejeoung Kim and Jongwon Park and Jinpyo Kim and Pyongwon Suh and Ryan H. Choi and Sangwoo Lee and Jaejin Lee}, year = {2026}, eprint = {2601.22585}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2601.22585}, }