NUDA: A Non-Uniform Debugging Architecture and Non-Intrusive Race Detection for Many-Core

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Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
Traditional debug methodologies are limited in their ability to provide debugging support for many-core parallel programming. Synchronization problems or bugs due to race conditions are particularly difficult to detect with software debugging tools. Most traditional debugging approaches rely on globally synchronized signals, but these pose problems in terms of scalability. The first contribution of this paper is to propose a novel Non-Uniform Debug Architecture (NUDA) based on a ring interconnection schema. The authors approach makes debugging both feasible and scalable for many-core processing scenarios. The key idea is to distribute the debugging support structures across a set of hierarchical clusters while avoiding address overlap.
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