Author

Shuang Ma

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Preprint Aug 2026

CommBench: Can LLMs Write Correct and Efficient GPU Communication Code?

Evaluating leading frontier and open-source code generation models on both intra-node NVLink and inter-node RDMA platforms reveals that even the strongest model, GPT-5.5, correctly implements and achieves competitive performance on only 30.7\% of the benchmark tasks.

Shuang Ma, Yu-Yi Li, Yihan Zhang et al. · 0 citations