ScaleBox: Enabling High-Fidelity and Scalable Code Verification for Large Language Models

Fuente: arXiv
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Main Authors: Zheng, Jiasheng, Zheng, Xin, Cao, Boxi, Wang, Pengbo, Ma, Zhengzhao, Zhu, Qiming, Jiang, Jiazhen, Lu, Yaojie, Lin, Hongyu, Han, Xianpei, Sun, Le
Format: Preprint
Published: 2026
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author Zheng, Jiasheng
Zheng, Xin
Cao, Boxi
Wang, Pengbo
Ma, Zhengzhao
Zhu, Qiming
Jiang, Jiazhen
Lu, Yaojie
Lin, Hongyu
Han, Xianpei
Sun, Le
author_facet Zheng, Jiasheng
Zheng, Xin
Cao, Boxi
Wang, Pengbo
Ma, Zhengzhao
Zhu, Qiming
Jiang, Jiazhen
Lu, Yaojie
Lin, Hongyu
Han, Xianpei
Sun, Le
contents Code sandboxes have emerged as a critical infrastructure for advancing the coding capabilities of large language models, providing verifiable feedback for both RL training and evaluation. However, existing systems fail to provide accurate verification and efficiency under high-concurrency workloads. We present ScaleBox, a high-fidelity and scalable system designed to address these limitations in large-scale code training. ScaleBox introduces automated special-judge generation and management, fine-grained parallel execution across test cases with seamless multi-node coordination, and a configuration-driven evaluation suite for reproducible benchmarking. A series of experiments demonstrates that ScaleBox significantly enhances code verification accuracy and efficiency. Our further RLVR experiments show that ScaleBox substantially improves both performance on LiveCodeBench and training stability, significantly outperforming heuristic-matching baselines. By providing a reliable and high-throughput infrastructure, ScaleBox facilitates more effective research and development in large-scale code training.
format Preprint
id arxiv_https___arxiv_org_abs_2604_27467
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle ScaleBox: Enabling High-Fidelity and Scalable Code Verification for Large Language Models
Zheng, Jiasheng
Zheng, Xin
Cao, Boxi
Wang, Pengbo
Ma, Zhengzhao
Zhu, Qiming
Jiang, Jiazhen
Lu, Yaojie
Lin, Hongyu
Han, Xianpei
Sun, Le
Software Engineering
Computation and Language
Code sandboxes have emerged as a critical infrastructure for advancing the coding capabilities of large language models, providing verifiable feedback for both RL training and evaluation. However, existing systems fail to provide accurate verification and efficiency under high-concurrency workloads. We present ScaleBox, a high-fidelity and scalable system designed to address these limitations in large-scale code training. ScaleBox introduces automated special-judge generation and management, fine-grained parallel execution across test cases with seamless multi-node coordination, and a configuration-driven evaluation suite for reproducible benchmarking. A series of experiments demonstrates that ScaleBox significantly enhances code verification accuracy and efficiency. Our further RLVR experiments show that ScaleBox substantially improves both performance on LiveCodeBench and training stability, significantly outperforming heuristic-matching baselines. By providing a reliable and high-throughput infrastructure, ScaleBox facilitates more effective research and development in large-scale code training.
title ScaleBox: Enabling High-Fidelity and Scalable Code Verification for Large Language Models
topic Software Engineering
Computation and Language
url https://arxiv.org/abs/2604.27467