the paper studies the efficiency of nine state-of-the-art algorithms for scheduling of workflow applications in heterogeneous computing systems (HCS). the comparison of algorithms is performed on the base of discrete-...
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ISBN:
(纸本)9783319629322;9783319629315
the paper studies the efficiency of nine state-of-the-art algorithms for scheduling of workflow applications in heterogeneous computing systems (HCS). the comparison of algorithms is performed on the base of discrete-event simulation for a wide range of workflow and system configurations. the developed open source simulation framework based on SimGrid toolkit allowed us to perform a large number of experiments in a reasonable amount of time and to ensure reproducible results. the accuracy of the used network model helped to reveal drawbacks of simpler models commonly used for studying scheduling algorithms.
the proceedings contain 75 papers. the topics discussed include: seed differential processing technique for sequential estimation acquisition in the presence of data modulation;integration of language processing and l...
ISBN:
(纸本)9781941763551
the proceedings contain 75 papers. the topics discussed include: seed differential processing technique for sequential estimation acquisition in the presence of data modulation;integration of language processing and linguistic research as the mainstream in the Arabic studies;hacking experiment using USB rubber ducky scripting;modeling of the motion and interaction of carbon particles in the plasma electric arc discharge using parallel programming technologies;parallel implementation of the bat algorithm on a single computer;selected issues of IT risk management in the cloud computing model. theory and practice;ameliorating sources of human error in CyberSecurity: technological and human-centered approaches;solving the economic load dispatch problem using crow search algorithm;ozone problem: final solution;using simulation modeling approach to predict USMLE steps 1 and 2 performances;educational theories, methodologies and technology integration in the classroom;how to incorporate technology with inquiry-based learning to enhance the understanding of chemical composition;how to analyze unknown samples;complexity in practice: development and deployment of e-learning system for secondary schools in Bangladesh;and green synthesis of nanoparticles -a learning experience.
CAPE, which stands for Checkpointing-Aided parallel Execution, is an approach based on checkpoints to automatically translate and execute OpenMP programs on distributed-memory architectures. this approach demonstrates...
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As part of the NSF funded XMS project, we are actively researching automatic detection of poorly performing HPC jobs. To aid the analysis we have generated a taxonomy of the temporal I/O patterns for HPC jobs. In this...
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Components for High Performance computing are continuously increasing to achieve more performance and satisfy scientific application users demands. To reduce the Mean Time To Repair in these systems and increment high...
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ISBN:
(纸本)9781538632505
Components for High Performance computing are continuously increasing to achieve more performance and satisfy scientific application users demands. To reduce the Mean Time To Repair in these systems and increment high availability, Fault Tolerance (FT) solutions are required. the checkpoint/restart approach is a widely used mechanism in FT solutions. One of the most used technique to take checkpoints in parallelapplications implemented using Message Passing Interface is the coordinated checkpoints. In this paper a Fault Tolerance Manager (FTM) for coordinated checkpoint files is presented, to provide users automatic recovery from failures when losing computing nodes. this proposal makes the configuration of FT simpler and transparent for users without knowledge of their application implementation. Furthermore, system administrators are not required to install libraries in their cluster to support FTM. It takes advantage of node local storage to save checkpoints, and it distributes copies of them along all the computation nodes, avoiding the bottleneck of a central stable storage. this approach is particularly useful in IaaS cloud environments, where users have to pay for centralized stable storage services. this work is based on RADIC, a well-known architecture to provide fault tolerance in a distributed, flexible, automatic and scalable way. Experimental results shows the benefits of the presented approach in a private cluster and a well-known cloud computing environment, Amazon EC2.
Co-authorship analysis in science and technology partnerships provides a vision of cooperation patterns between individuals and organizations and is still widely used to understand and assess scientific collaboration ...
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MapReduce is the renowned distributed and parallel programming model with an extensive support for large scale computing. However, the performance of MapReduce is currently limited by the default scheduler as it is no...
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ISBN:
(纸本)9781509030385
MapReduce is the renowned distributed and parallel programming model with an extensive support for large scale computing. However, the performance of MapReduce is currently limited by the default scheduler as it is not suitable for heterogeneous environments and it does not consider certain user constraints such as deadlines. the paper proposes a deadline aware scheduling algorithm that selectively uses speculative execution when the job approaches its deadline in order to expedite job's execution. the algorithm is implemented on the heterogeneous Hadoop cluster and the evaluation shows significant improvement in the performance. the performance improvement was observed as the number of jobs that miss the deadlines as well as overall execution time for different workloads was minimized
Extraordinary progress in genome sequencing technologies has led to a tremendous increase in the number of sequenced genomes. However, biologists have run into a computational bottleneck to assemble large and complex ...
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ISBN:
(纸本)9781450347228
Extraordinary progress in genome sequencing technologies has led to a tremendous increase in the number of sequenced genomes. However, biologists have run into a computational bottleneck to assemble large and complex genomes quickly, due to the lack of scalable and parallel de novo assembly algorithms. Among several approaches to assembly, the iterative de Bruijn graph (DBG) assemblers, such as IDBA-UD, generate high-quality assemblies by sequentially iterating from small to large k-values used in graph construction. However, this approach is time intensive because the creation of the graphs for increasing k-values proceeds sequentially. For example, with just eight k-values, graph construction takes 96% of the total time to assemble a metagenomic dataset with 33 million paired-end reads. In this paper, we propose ScalaDBG, which transforms the sequential process of DBG construction for a range of k values, to one where each graph is built independently and in parallel. We develop a novel mechanism whereby the graph for the higher k value can be "patched" with contigs generated from the graph withthe lower k value. We show that for a variety of datasets our technique can assemble complex genomes much faster than IDBA-UD (6.7X faster for the most complex genome in our dataset) while maintaining the same accuracy for the assembled genome. Moreover, ScalaDBG's multi-level parallelism allows it to simultaneously leverage the power of mighty server machines by using all their cores and of compute clusters by scaling out.
the proceedings contain 30 papers. the special focus in this conference is on Serious Games, Interaction technologies, Persuasion, Motivation, Exertion Games, Game Studies, Novel applications and Tools. the topics inc...
ISBN:
(纸本)9783319496153
the proceedings contain 30 papers. the special focus in this conference is on Serious Games, Interaction technologies, Persuasion, Motivation, Exertion Games, Game Studies, Novel applications and Tools. the topics include: Designing collaborative games for children education on sustainable development;a serious game for learning social networking literacy by flaming experiences;exploring user-defined gestures and voice commands to control an unmanned aerial vehicle;monitoring interactions;analyzing fear using a single-sensor EEG device;interactive advertisements in an IoT era;the influence of social exertion gaming on game experience and social presence;distributed embodied team play, a distributed interactive pong playground;a throw training system utilizing visual and sound effects;deep learning for classifying battlefield 4 players;the oculus rift film experience;a case study on understanding films in a head mounted display;world without walls immersive mixed reality;interaction design tools for autism;from playable to playful;the humorous city;play in the algorithmic city;visual abstraction for games on large public displays and a conversational agent that reacts to vocal signals and supporting group reflection in a virtual role-playing environment.
For automating the deployment of applications in cloud environments, a variety of deployment automation technologies have been developed in recent years. these technologies enable specifying the desired deployment in ...
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