A Gauss-Seidel variant is developed which maintains data in the L2 cache memory longer than and runs approximately twice as fast as standard implementations. This variant depends on a decomposition of grid nodes into blocks which t into cache. We discuss two O(n) algorithms which perform a one-time reordering of the grid nodes and associated operators. Numerical tests demonstrate the speedups p...

Multimedia applications are becoming a key component of microcomputer workloads. Prominent among these is digital video decoding using the prevalent MPEG Video encoding standard. The unanimous response from microprocessor manufacturers has been the implementation of multimedia instruction set extensions. These new instructions significantly improve the computational capabilities of general-purp...

In this paper, we introduce a scalable Video-on-Demand (VoD) system called GloVE (Global Video Environment) in which active clients cooperate to create a shareable video cache that is used as the primary source of video content for subsequent client requests. In this way, GloVE server’s bandwidth does not limit the number of simultaneous clients that can watch a video since once its content is ...

In this work we present a framework that profiles HEVC (High Efficiency Video Coding) encoders modules focusing on cache memory performance and energy. This framework considers the HEVC reference software (HM) and analyzes the impact of some coding parameters on the cache hierarchy. HEVC was proposed in 2013, presenting new video coding techniques to deal with the demand for higher resolutions....

Recent years have seen a tremendous growth of interests in streaming continuous media such as video data over the Internet. This would create an enormous increase in the demand on various server and networking resources. To minimize service delays and to reduce loads placed on these resources, we propose an Overlay Caching Scheme (OCS) for overlay networks. OCS utilizes virtual cache structures...

This paper examines a novel cache management policy, which we call LRLFU and is applied to groups of blocks of the media files. This cache management policy is capable of capturing the changing popularities of the various videos by attaching a caching value to every video according to how recently and how frequently the video was requested, and decides to cache the most ‘valuable’ videos. Our e...

Problem statement: Data availability and consistency are foremost issues in Mobile Ad hoc Networks due to the absence of permanent infrastructure. Cooperative caching addresses the data availability issue through coordinating the mobile nodes and sharing the cache copies among them. In the meantime, the mobile node must ensure the staleness of cache copies. The consistency maintenance resolves ...

This paper proposes optimization of DSR (Dynamic Source Routing) protocol in aspect of cache size and cache expiry time to meet Quality of Service requirements between source and destination node pairs. The nodes are assumed to use a TDMA (Time Division Multiple Access) based MAC (Medium Access Control) layer. Given a set of Q o S requirements, a set of wireless nodes and their initial position...