著者

Ye Gao Ryusuke Egawa Hiroyuki Takizawa Hiroaki Kobayashi

雑誌

研究報告計算機アーキテクチャ(ARC)

巻号頁・発行日

vol.2010-ARC-190, no.24, pp.1-10, 2010-07-27

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Nowadays, multimedia applications (MMAs) form an important workload for general purpose processors. The vector processing is considered as the most potential approach for MMAs due to plenty of data level parallelism involved in them. However, the tradition vector architectures obey an in-order issue policy (IIP). The IIP issue policy blocks the following instructions to be issued, no matter whether they are ready to be issued or not. This paper proposes a media-oriented vector architectural extension with an out-of-order vector processing mechanism (OVPM). The OVPM overcomes the inefficiency on utilization of the memory bandwidth and vector functional units. As a result, the proposed architecture achieves a higher performance with lower hardware cost than the traditional one. This paper evaluates the proposed architecture with architectural design parameters and finds out the most efficient size for the vector architecture when performing MMAs.