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Cache streamization for high performance stream processor

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7 Author(s)
Nan Wu ; Comput. Sch., Nat. Univ. of Defense Technol., Changsha, China ; Mei Wen ; Ju Ren ; Yi He
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Due to high bandwidth demand on memory system of stream applications, most of stream processors use software-managed streaming memory. However, this memory disadvantages ease of programming, compatibility, and supporting irregular stream access, which hinder the usage of stream processor in broader application domains. Meanwhile, hardware-managed coherent caches overcome these shortcomings of software-managed streaming memory with side-effect due to lack of supporting stream. For this problem, this paper developed a streamization cache whose performance is comparable to streaming memory but is more easy to use. The paper presents the motivation and details of our proposed design, including three stream-specific techniques for cache on data fetch policy, replacement policy and multi-client access. Moreover, a streamization cache instance is implemented in FT64, a 64-bit high performance stream processor. Based on a set of streaming application benchmark, the paper estimates the performance, power consumption and the area cost of the proposed architecture. Results show that these streamization techniques for cache are worthwhile.

Published in:

High Performance Computing (HiPC), 2009 International Conference on

Date of Conference:

16-19 Dec. 2009