this paper addresses a real-world optimization problem in civil engineering. It lies in the dimensioning of a 162m long bridge composed of 1584 bars so that both its weight and its deformation are to be minimized. Eva...
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ISBN:
(纸本)9780769550947
this paper addresses a real-world optimization problem in civil engineering. It lies in the dimensioning of a 162m long bridge composed of 1584 bars so that both its weight and its deformation are to be minimized. Evaluating each possible configuration of the bridge takes several seconds and, as a consequence, running a metaheuristic for several thousands of evaluations would require many days on one single processor. Our approach has been to develop a distributed master/worker version of SMS-EMOA, an indicator-based multiobjective algorithm. By combining the Java implementation of the algorithm in jMetal withthe Condor distributed scheduler, we have been able to use more than 350 cores to obtain accurate results in a reasonable amount of time.
the Mobile Network Optimization (MNO) technologies have advanced at a tremendous pace in recent years. And the Dynamic Network Optimization (DNO) concept emerged years ago, aimed to continuously optimize the network i...
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ISBN:
(纸本)9789532900439
the Mobile Network Optimization (MNO) technologies have advanced at a tremendous pace in recent years. And the Dynamic Network Optimization (DNO) concept emerged years ago, aimed to continuously optimize the network in response to variations in network traffic and conditions. Yet, DNO development is still at its infancy, mainly hindered by a significant bottleneck of the lengthy optimization runtime. this paper identifies parallelism in greedy MNO algorithms and presents an advanced distributedparallel solution. the solution is designed, implemented and applied to real-life projects whose results yield a significant, highly scalable and nearly linear speedup up to 6.9 and 14.5 on distributed8-core and 16-core systems respectively. Meanwhile, optimization outputs exhibit self-consistency and high precision compared to their sequential counterpart. this is a milestone in realizing the DNO. Further, the techniques may be applied to similar greedy optimization algorithm based applications.
In this work, we address the problem of slot selection and co-allocation for parallel jobs in distributedcomputing with non-dedicated resources. A single slot is a time span that can be assigned to a task, which is a...
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ISBN:
(纸本)9783319009452
In this work, we address the problem of slot selection and co-allocation for parallel jobs in distributedcomputing with non-dedicated resources. A single slot is a time span that can be assigned to a task, which is a part of a job. the job launch requires a co-allocation of a specified number of slots starting synchronously. the challenge is that slots associated with different CPU nodes of distributed computational environments may have arbitrary start and finish points that do not match. Some existing algorithms assigns a job to the first set of slots matching the resource request without any optimization (the first fit type), while other algorithms are based on an exhaustive search. In this paper, algorithms for effective slot selection of linear complexity are studied and compared with known decisions. the proposed algorithms allow overall increase in the quality of service (QoS) for each of the considered rates: job start time, finish time, runtime, CPU usage time and total cost of job execution.
the proceedings contain 18 papers. the special focus in this conference is on Evaluation of Novel Approaches to Software Engineering. the topics include: Designing a virtual reality software;an experiment on self-conf...
ISBN:
(纸本)9783642540912
the proceedings contain 18 papers. the special focus in this conference is on Evaluation of Novel Approaches to Software Engineering. the topics include: Designing a virtual reality software;an experiment on self-configuring database queries;an MDE approach to develop mobile-agents applications;a fault injection based approach to assessment of quality of test sets for BPEL processes;comparing two class composition approaches;testing distributed communication protocols by formal performance monitoring;research in global software engineering;test city metaphor for low level tests restructuration in test database;service retrieval for service-oriented business process modeling;investigating the applicability of the laws of software evolution;automatic extraction of behavioral models from distributed systems and services;impact-driven regression test selection for mainframe business systems;improving business process model after reverse engineering;measuring the effect of enabling traces generation in ATL model transformations and reverse engineering applied to CMS-based web applications coded in PHP.
Approximate string matching using the k-difference technique has been widely applied to many fields such as pattern recognition and computational biology. Data dependency exists in the traditional sequential algorithm...
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the proceedings contain 23 papers. the topics discussed include: efficient parallel algorithms for XML filtering with structural and value constraints;a simulation-based method for eliciting requirements of online CIB...
ISBN:
(纸本)9783642366079
the proceedings contain 23 papers. the topics discussed include: efficient parallel algorithms for XML filtering with structural and value constraints;a simulation-based method for eliciting requirements of online CIB systems;reducing latency and network load using location-aware memcache architectures;modeling capabilities as attribute-featured entities;governance policies for verification and validation of service choreographies;real-text dictionary for topic-specific web searching;evaluating cross-platform development approaches for mobile applications;information gathering tasks on the web: attempting to identify the user search behavior;web-based exploration of photos with time and geospace;mixed-initiative management of online calendars;knowledge discovery: data mining by self-organizing maps;and ranking location-dependent keywords to extract geographical characteristics from microblogs.
Dynamic programming approach solves complex problems efficiently by breaking them down into simpler sub-problems, and is widely utilized in scientific computing. Withthe increasing data volume of scientific applicati...
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the paper deal about the electrophysiology distributed data processing and analysis. the aim of the work was the distance computer environment for biomedical data processing services with effective data visualizing. T...
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ISBN:
(数字)9783642409257
ISBN:
(纸本)9783642409257;9783642409240
the paper deal about the electrophysiology distributed data processing and analysis. the aim of the work was the distance computer environment for biomedical data processing services with effective data visualizing. the system combine end user interactive interaction with biomedical data was realized withthe use of rapid calculating by FPGA technology. Combining of these technologies allows a vide range spectrum of users to quick access to proceed biomedical data. this article involved the possible topological proposal and implementation of that biomedical distributed signal processing system.
Sharing the Semantic Web data in proprietary datasets in which data is encoded in RDF triples in a decentralized environment calls for efficient support from distributedcomputingtechnologies. the highly dynamic ad-h...
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In this paper, a mathematical model for handover performance indicators in LTE(long time evolution) wireless networks is proposed withthe aim of predicting handover parameters and improving handover reliability and e...
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