A Scalable Hardware Implementation of a Best-Effort Scheduler for Multicore Processors

Gregorek, Daniel; Osewold, Christof; García-Ortiz, Alberto

doi:10.1109/dsd.2013.82

Cited by 4 publications

(1 citation statement)

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“…Based on preliminary work it became obvious, that a centralized architecture for hardware enhanced RTM does not provide sufficient scalability for many-core [24]. The instantiation of a single hardware enhanced RTM provides the possibility to highly optimize the hardware module, however it still may become a performance bottleneck.…”

Section: Contributionmentioning

confidence: 99%

DRACON: A Dedicated Hardware Infrastructure for Scalable Run-Time Management on Many-Core Systems

2019

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Many-core architectures integrate a large number of comparatively small processing cores into a single chip. However, the high degree of parallelism increases the run-time resource management complexity and overhead. The employment of dedicated hardware enhancements potentially enables a high quality of the resource management while management overhead is mitigated. To exploit the potential of hardware enhancements, we propose a dedicated infrastructure for run-time resource management on homogeneous MIMD many-core processors. For hardware enhanced resource management, a scalable and cluster-based system architecture is implemented. The resulting architecture (DRACON) utilizes message passing based communication, the dedicated infrastructure and hardware accelerators for resource management. A comprehensive evaluation for DRACON and reference architectures is performed using a transaction level simulation framework and dynamic task management as a use case. As benchmarks, synthetic models and task graph models of real-world applications are applied. The results reveal the limited scalability of classical architectures for resource management on many-cores. It is therefore necessary to apply cluster-based or moderately distributed architectures for many-core resource management. Further, the results demonstrate a significant performance improvement for the DRACON architecture at a number of hundreds of processing cores. Our evaluations show that DRACON generally outperforms software-only run-time management on many-core and achieves a performance improvement of up to 15.21% for single-program and more than 6% for mixed workloads.INDEX TERMS Computer architecture, many-core, dynamic run-time management, dedicated hardware.

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Section: Contributionmentioning

confidence: 99%