825 research outputs found
3E: Energy-Efficient Elastic Scheduling for Independent Tasks in Heterogeneous Computing Systems
Reducing energy consumption is a major design constraint for modern heterogeneous computing systems to minimize electricity cost, improve system reliability and protect environment. Conventional energy-efficient scheduling strategies developed on these systems do not sufficiently exploit the system elasticity and adaptability for maximum energy savings, and do not simultaneously take account of user expected finish time. In this paper, we develop a novel scheduling strategy named energy-efficient elastic (3E) scheduling for aperiodic, independent and non-real-time tasks with user expected finish times on DVFS-enabled heterogeneous computing systems. The 3E strategy adjusts processorsâ supply voltages and frequencies according to the system workload, and makes trade-offs between energy consumption and user expected finish times. Compared with other energy-efficient strategies, 3E significantly improves the scheduling quality and effectively enhances the system elasticity
Ethyl 1-(4-methÂoxyÂbenzÂyl)-3-p-tolyl-1H-pyrazole-5-carboxylÂate
In the title compound, C21H22N2O3, the pyrazole ring makes dihedral angles of 12.93â
(8) and 69.38â
(8)°, respectively, with the tolyl and methÂoxyÂbenzyl rings
Quantum correlation and classical correlation dynamics in the spin-boson model
We study the quantum correlation and classical correlation dynamics in a
spin-boson model. For two different forms of spectral density, we obtain
analytical results and show that the evolutions of both correlations depend
closely on the form of the initial state. At the end of evolution, all
correlations initially stored in the spin system transfer to reservoirs. It is
found that for a large family of initial states, quantum correlation remains
equal to the classical correlation during the course of evolution. In addition,
there is no increase in the correlations during the course of evolution.Comment: 10 pages, 5 figure
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