Characterizing the resource-sharing levels in the UltraSPARC T2 processor
Proceedings of the 42nd Annual IEEE/ACM International Symposium on Microarchitecture
Thread to strand binding of parallel network applications in massive multi-threaded systems
Proceedings of the 15th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming
ACM Transactions on Architecture and Code Optimization (TACO) - HIPEAC Papers
Assessing the suitability of the NGMP multi-core processor in the space domain
Proceedings of the tenth ACM international conference on Embedded software
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Numerous studies have shown that Operating System (OS)noise is one of the reasons for significant performance degradation in clustered architectures. Although many studies examine the OS noise for High Performance Computing (HPC),especially in multi-processor/core systems, most of them focus on 2- or 4-core systems.In this paper, we analyze the major sources of OS noise on a massive multithreading processor, the Sun UltraSPARC T1,running Linux and Solaris. Since a real system is too complex to analyze, we compare those results with a low-overhead runtime environment: the Netra Data Plane Software Suite (Netra DPS).Our results show that the overhead introduced by the OStimer interrupt in Linux and Solaris depends on the particular core and hardware context in which the application is running. This overhead is up to 30% when the application is executed on the same hardware context of the timer interrupt handler and up to 10% when the application and the timer interrupt handler run on different contexts but on the same core.We detect no overhead when the benchmark and the timer interrupt handler run on different cores of the processor.