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Non-Volatile Memories (NVMs) can significantly improve the performance of data-intensive applications. A popular form of NVM is Battery-backed DRAM, which is available and in use today with DRAMs latency and without the endurance problems of emerging NVM technologies. Modern servers can be provisioned with up-to 4 TB of DRAM, and provisioning battery backup to write out such large memories is hard...
Moving the responsibility for certain computation, communication, and storage operations away from a mobile device's main processor can help save power while simultaneously increasing performance. Here, the authors present an overview of three such offloading techniques. This department is part of a special issue on energy harvesting and power management.
Applications can map data on SSDs into virtual memory to transparently scale beyond DRAM capacity, permitting them to leverage high SSD capacities with few code changes. Obtaining good performance for memory-mapped SSD content, however, is hard because the virtual memory layer, the file system and the flash translation layer (FTL) perform address translations, sanity and permission checks independently...
Persistent memory promises to be byte addressable, fast, and nonvolatile as well as provide higher capacity and more efficient power consumption. System applications designers stand to gain much from these features, but some work is necessary to fully exploit them. The Web extra at http://youtu.be/nJBMJ2cLpcg is a an audio interview in which guest editor Simon S.Y. Shim interviews Anirudh Badam about...
In this paper, we address the problem of video multicast over Ad hoc wireless networks. Multicasting is an efficient means of one-to-many communication and is typically implemented by creating a multicast tree. Video multicasting demands high quality of service with a continuous delivery to receivers. However, most of the existing multicast solutions do not guarantee this because they are not resilient...
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