Abstract
Processor architecture is undergoing a significant change in response to the rapidly escalating complexities of high-power, high-frequency, and increasingly superscalar designs. Evolutionary multi-core and aggressively multi-threaded chips are appearing in the general purpose microprocessor space. The latter offer simplicity, low power, and high performance on threaded workloads but with somewhat reduced single thread performance. This paper examines the performance of the SPARC64(TM) VI, a dual-core 4-thread processor, and the UltraSPARC(TM) T1, an 8-core 32-thread processor. Numerous workloads are executed on both designs. These include single thread speed tests, homogeneous throughput tests, and multi-threaded tests using varying amounts of data and parallelism. The results indicate a clear separation in the workloads that are best suited to each design. To reap the full benefit of these multi-threaded designs, software has to be architected to use as many threads as possible. This shift is likely to affect both software developers and compiler writers for the next several years.
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Tirumalai, P., Song, Y., Kalogeropulos, S. (2007). Performance Evaluation of Evolutionary Multi-core and Aggressively Multi-threaded Processor Architectures. In: Choi, L., Paek, Y., Cho, S. (eds) Advances in Computer Systems Architecture. ACSAC 2007. Lecture Notes in Computer Science, vol 4697. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74309-5_27
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DOI: https://doi.org/10.1007/978-3-540-74309-5_27
Publisher Name: Springer, Berlin, Heidelberg
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