The Experts below are selected from a list of 8007 Experts worldwide ranked by ideXlab platform
Peter Petrov - One of the best experts on this subject based on the ideXlab platform.
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i cache configurability for temperature reduction through replicated cache Partitioning
Symposium on Application Specific Processors, 2010Co-Authors: Mathew Paul, Peter PetrovAbstract:On-chip caches have been known to be a major contributor to leakage power as they occupy a sizable fraction of the chip's real estate and as such have been the target of power optimization techniques. However, many of these techniques do not consider the effects of temperature on leakage power and can hence be suboptimal since leakage power rises rapidly with temperature. When large fractions of the cache are disabled and only a small Partition is used, the power density increases significantly which leads to increased temperature and leakage. We propose a temperature reduction methodology that leverages recently introduced configurable caches, in order to not only assign to the task a cache Partition commensurate to its current demand but also to minimize the associated power density and temperature. In order to counteract the effect of elevated power density and achieve temperature reductions, in the proposed technique each such cache Partition is replicated and only one of the replicas is active at any time. The inactive Partition replicas are placed into a low-power drowsy mode while the Primary Partition services the task's instruction requests. By periodically switching the tasks association between replica cache Partitions, the power density and hence the temperature are reduced.
Mathew Paul - One of the best experts on this subject based on the ideXlab platform.
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i cache configurability for temperature reduction through replicated cache Partitioning
Symposium on Application Specific Processors, 2010Co-Authors: Mathew Paul, Peter PetrovAbstract:On-chip caches have been known to be a major contributor to leakage power as they occupy a sizable fraction of the chip's real estate and as such have been the target of power optimization techniques. However, many of these techniques do not consider the effects of temperature on leakage power and can hence be suboptimal since leakage power rises rapidly with temperature. When large fractions of the cache are disabled and only a small Partition is used, the power density increases significantly which leads to increased temperature and leakage. We propose a temperature reduction methodology that leverages recently introduced configurable caches, in order to not only assign to the task a cache Partition commensurate to its current demand but also to minimize the associated power density and temperature. In order to counteract the effect of elevated power density and achieve temperature reductions, in the proposed technique each such cache Partition is replicated and only one of the replicas is active at any time. The inactive Partition replicas are placed into a low-power drowsy mode while the Primary Partition services the task's instruction requests. By periodically switching the tasks association between replica cache Partitions, the power density and hence the temperature are reduced.
Chen Chao - One of the best experts on this subject based on the ideXlab platform.
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Study on the Manual Recovery Technology of Primary Partition Table in Electronic Forensics
Netinfo Security, 2012Co-Authors: Chen ChaoAbstract:Through the analysis and research of the hard disk Partition structure in the teaching of electronic forensics,this paper puts forward a manual way to restore the Primary Partition table.By computing the size and starting position of Partition and using the formation of DBR and EBR,we can rebuild the Primary Partition table.The recovery experiment of the Partition table on Partition continuous hard disk has proved that the method is right.the article concludes with a research focus on the next step.
Gary Anthony Vaiskauckas - One of the best experts on this subject based on the ideXlab platform.
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virtual floppy diskette image within a Primary Partition in a hard disk drive and method for booting system with virtual diskette
2000Co-Authors: Herbert Jackson Ice, Robert D Johnson, Kofi Kekessie, David B Rhoades, Gary Anthony VaiskauckasAbstract:A data processing system and method are described for booting a computer system from a virtual floppy diskette. A native operating system is executed by the computer system which utilizes a native file system. A boot able floppy diskette image is stored on the hard drive. The image includes a second operating system which utilizes a second file system. A master boot record stored on the hard drive is modified to include a boot bit. The boot bit is set in response to a storage of the image. The computer system is then booted from the image in response to the boot bit being set. The native operating system and the native file system are unchanged during the booting of the computer system from the image.
P H Schuepp - One of the best experts on this subject based on the ideXlab platform.
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on surface energy balance over the northern wetlands 2 the variability of the bowen ratio
Journal of Geophysical Research, 1994Co-Authors: P H SchueppAbstract:An energy balance model for land surfaces with small-scale temperature and wetness heterogeneity [Guo and Schuepp, this issue] was used to study the variability of the Bowen ratio over northern wetlands. It was shown that the variation of the Bowen ratio can be caused by three factors: change in Primary Partition of surface available energy, local heat advection, and changes in atmosphere-surface conditions. The first factor is the most sensitive one because it is directly proportional to the change in the ratio of dry to wet patch size. Due to its scale-dependent, nonuniform reallocation of a portion of surface available energy between patches, the second factor adjusts the spatial variation of Bowen ratio in two aspects. On the one hand, it reduces the Bowen ratio variation caused by the change in the ratio of dry to wet patch size. On the other hand, it introduces the variation of the Bowen ratio caused by changes in absolute patch dimension, when the ratio of dry to wet patch size is constant in a given area. In model simulations for the case of equally sized dry and wet patches the latter influence was shown to generate variation in the Bowen ratio between 0.6 and 1.2, when patch dimensions varied up to 100 m. This helps explain the variability of the regionally averaged Bowen ratio observed by aircraft over different parts of the northern wetlands in the NOWES project. The third factor may affect both the absolute values and the range of the Bowen ratio by modifying directly the Primary energy budgets and, indirectly, the local heat advection.