13,297 research outputs found
Integrated Green Cloud Computing Architecture
Arbitrary usage of cloud computing, either private or public, can lead to
uneconomical energy consumption in data processing, storage and communication.
Hence, green cloud computing solutions aim not only to save energy but also
reduce operational costs and carbon footprints on the environment. In this
paper, an Integrated Green Cloud Architecture (IGCA) is proposed that comprises
of a client-oriented Green Cloud Middleware to assist managers in better
overseeing and configuring their overall access to cloud services in the
greenest or most energy-efficient way. Decision making, whether to use local
machine processing, private or public clouds, is smartly handled by the
middleware using predefined system specifications such as service level
agreement (SLA), Quality of service (QoS), equipment specifications and job
description provided by IT department. Analytical model is used to show the
feasibility to achieve efficient energy consumption while choosing between
local, private and public Cloud service provider (CSP).Comment: 6 pages, International Conference on Advanced Computer Science
Applications and Technologies, ACSAT 201
IMP Science Gateway: from the Portal to the Hub of Virtual Experimental Labs in Materials Science
"Science gateway" (SG) ideology means a user-friendly intuitive interface
between scientists (or scientific communities) and different software
components + various distributed computing infrastructures (DCIs) (like grids,
clouds, clusters), where researchers can focus on their scientific goals and
less on peculiarities of software/DCI. "IMP Science Gateway Portal"
(http://scigate.imp.kiev.ua) for complex workflow management and integration of
distributed computing resources (like clusters, service grids, desktop grids,
clouds) is presented. It is created on the basis of WS-PGRADE and gUSE
technologies, where WS-PGRADE is designed for science workflow operation and
gUSE - for smooth integration of available resources for parallel and
distributed computing in various heterogeneous distributed computing
infrastructures (DCI). The typical scientific workflows with possible scenarios
of its preparation and usage are presented. Several typical use cases for these
science applications (scientific workflows) are considered for molecular
dynamics (MD) simulations of complex behavior of various nanostructures
(nanoindentation of graphene layers, defect system relaxation in metal
nanocrystals, thermal stability of boron nitride nanotubes, etc.). The user
experience is analyzed in the context of its practical applications for MD
simulations in materials science, physics and nanotechnologies with available
heterogeneous DCIs. In conclusion, the "science gateway" approach - workflow
manager (like WS-PGRADE) + DCI resources manager (like gUSE)- gives opportunity
to use the SG portal (like "IMP Science Gateway Portal") in a very promising
way, namely, as a hub of various virtual experimental labs (different software
components + various requirements to resources) in the context of its practical
MD applications in materials science, physics, chemistry, biology, and
nanotechnologies.Comment: 6 pages, 5 figures, 3 tables; 6th International Workshop on Science
Gateways, IWSG-2014 (Dublin, Ireland, 3-5 June, 2014). arXiv admin note:
substantial text overlap with arXiv:1404.545
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