XAMT: Cross-Framework API Matching for Testing Deep Learning Libraries

• URL: http://arxiv.org/abs/2508.12546v1
• Date: Mon, 18 Aug 2025 00:48:50 GMT
• Title: XAMT: Cross-Framework API Matching for Testing Deep Learning Libraries
• Authors: Bin Duan, Ruican Dong, Naipeng Dong, Dan Dongseong Kim, Guowei Yang,
• Abstract summary: We propose XAMT, a cross-framework fuzzing method for testing deep learning libraries.<n>XAMT matches APIs using similarity-based rules based on names, descriptions, and parameter structures.<n>It then aligns inputs and applies variance-guided testing to detect bugs.
• Score: 6.00258665435786
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Deep learning powers critical applications such as autonomous driving, healthcare, and finance, where the correctness of underlying libraries is essential. Bugs in widely used deep learning APIs can propagate to downstream systems, causing serious consequences. While existing fuzzing techniques detect bugs through intra-framework testing across hardware backends (CPU vs. GPU), they may miss bugs that manifest identically across backends and thus escape detection under these strategies. To address this problem, we propose XAMT, a cross-framework fuzzing method that tests deep learning libraries by matching and comparing functionally equivalent APIs across different frameworks. XAMT matches APIs using similarity-based rules based on names, descriptions, and parameter structures. It then aligns inputs and applies variance-guided differential testing to detect bugs. We evaluated XAMT on five popular frameworks, including PyTorch, TensorFlow, Keras, Chainer, and JAX. XAMT matched 839 APIs and identified 238 matched API groups, and detected 17 bugs, 12 of which have been confirmed. Our results show that XAMT uncovers bugs undetectable by intra-framework testing, especially those that manifest consistently across backends. XAMT offers a complementary approach to existing methods and offers a new perspective on the testing of deep learning libraries.

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