Pub Date : 2005-09-22DOI: 10.1109/ESTMED.2005.1518078
Yuki Kobayashi, M. Jayapala, P. Raghavan, F. Catthoor, M. Imai
Clustering L0 buffers is effective for reduction of energy consumption in the instruction memory hierarchy of embedded VLIW processors. However, efficiency of the clustering depends on schedule and assignment of a target application. This paper proposes a tool flow to explore operation shuffling for improving generation of L0 clusters. The tools explore assignment of operations for each cycle and generate various schedules. This approach makes it possible to reduce energy consumption for various processor architectures, however, the computational complexity is large because of huge exploration space. Therefore, some heuristics are also developed, which reduce the size of exploration space while the quality of solution remains reasonable. The experimental results indicate potential gain of up to 22.0% in energy of the operation shuffling for various heterogeneous processor architectures. Furthermore, the proposed heuristics drastically reduce the exploration search space by about 90%, while the results are comparable to full search, differences of up to 1%.
{"title":"Operation shuffling for low energy L0 cluster generation on heterogeneous VLIW processors","authors":"Yuki Kobayashi, M. Jayapala, P. Raghavan, F. Catthoor, M. Imai","doi":"10.1109/ESTMED.2005.1518078","DOIUrl":"https://doi.org/10.1109/ESTMED.2005.1518078","url":null,"abstract":"Clustering L0 buffers is effective for reduction of energy consumption in the instruction memory hierarchy of embedded VLIW processors. However, efficiency of the clustering depends on schedule and assignment of a target application. This paper proposes a tool flow to explore operation shuffling for improving generation of L0 clusters. The tools explore assignment of operations for each cycle and generate various schedules. This approach makes it possible to reduce energy consumption for various processor architectures, however, the computational complexity is large because of huge exploration space. Therefore, some heuristics are also developed, which reduce the size of exploration space while the quality of solution remains reasonable. The experimental results indicate potential gain of up to 22.0% in energy of the operation shuffling for various heterogeneous processor architectures. Furthermore, the proposed heuristics drastically reduce the exploration search space by about 90%, while the results are comparable to full search, differences of up to 1%.","PeriodicalId":119898,"journal":{"name":"3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116458192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-09-22DOI: 10.1109/ESTMED.2005.1518065
A. Kejariwal, S. Gupta, A. Nicolau, N. Dutt, Rajesh K. Gupta
The growth of Internet-enabled handheld devices has increased the need for the projection of digital media and intellectual property rights. One way to ensure this protection is via digital watermarking, a process that embeds an imperceptible signature or watermark in a digital file containing audio, image, text or video data. The signature is later used to authenticate the data file and for tamper detection. Effective watermarking can be computationally expensive and place additional drain on the available energy in handheld devices. We present a detailed analysis of the energy requirements and performance of a range of prevalent and proposed algorithms for signature embedding, extraction, and authentication for images. We also discuss the security versus energy trade-offs of these algorithms and study the impact of image resolution on energy and performance.
{"title":"Energy analysis of multimedia watermarking on mobile handheld devices","authors":"A. Kejariwal, S. Gupta, A. Nicolau, N. Dutt, Rajesh K. Gupta","doi":"10.1109/ESTMED.2005.1518065","DOIUrl":"https://doi.org/10.1109/ESTMED.2005.1518065","url":null,"abstract":"The growth of Internet-enabled handheld devices has increased the need for the projection of digital media and intellectual property rights. One way to ensure this protection is via digital watermarking, a process that embeds an imperceptible signature or watermark in a digital file containing audio, image, text or video data. The signature is later used to authenticate the data file and for tamper detection. Effective watermarking can be computationally expensive and place additional drain on the available energy in handheld devices. We present a detailed analysis of the energy requirements and performance of a range of prevalent and proposed algorithms for signature embedding, extraction, and authentication for images. We also discuss the security versus energy trade-offs of these algorithms and study the impact of image resolution on energy and performance.","PeriodicalId":119898,"journal":{"name":"3rd Workshop on Embedded Systems for Real-Time Multimedia, 2005.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117053492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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