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5th International Conference on Complex, Intelligent and Software Intensive Systems, CISIS 2011

作者： Isaza, Sebastian Houtgast, Ernst Sanchez, Friman Ramirez, Alex Gaydadjiev, Gergi Computer Engineering Laboratory Delft University of Technology Netherlands Computer Architecture Department Technical University of Catalonia Spain Barcelona Supercomputing Center Spain

ISBN: (纸本)9780769543734

In bioinformatics, protein sequence alignment is one of the fundamental tasks that scientists perform. Since the growth of biological data is exponential, there is an ever-increasing demand for computational power. While current processor technology is shifting towards the use of multicores, the mapping and parallelization of applications has become a critical issue. In order to keep up with the processing demands, applications' bottlenecks to performance need to be found and properly addressed. In this paper we study the parallelism and performance scalability of HMMER, a bioinformatics application to perform sequence alignment. After our study of the bottlenecks in a HMMER version ported to the Cell processor, we present two optimized versions to improve scalability in a larger multicore architecture. We use a simulator that allows us to model a system with up to 512 processors and study the performance of the three parallel versions of HMMER. Results show that removing the I/O bottleneck improves performance by 3X and 2.4X for a short and a long HMM query respectively. Additionally, by offloading the sequence pre-formatting to the worker cores, larger speedups of up to 27X and 7X are achieved. Compared to using a single worker processor, up to 156X speedup is obtained when using 256 cores. © 2011 IEEE.

关键词： Bioinformatics

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Save the Yummy Candyland: An Asymmetric Virtual Reality Game 22

Save the Yummy Candyland: An Asymmetric Virtual Reality Game

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9th ACM SIGCHI Annual Symposium on computer-Human Interaction in Play, CHI PLAY 2022

作者： Arendttorp, Emilie Maria Nybo Winschiers-Theophilus, Heike Itenge, Helvi Skovfoged, Milo Marsfeldt Architecture Design And Media Technology Aalborg University Denmark Computer Science Namibia University Of Science And Technology Namibia Tlu Namibia University Of Science And Technology Namibia Department Of Architecture Design And Media Technology Aalborg University Denmark

ISBN: (纸本)9781450392112

This preliminary study explored how to make otherwise passive bystanders into an integral part of a virtual reality (VR) experience using asymmetric game design. We present a fully implemented collaborative VR game, co-designed by Namibian school children. The team needs to solve puzzles, whereby one player, using a VR headset, enters the digital world of Candyland, communicating with the other teammates, who are using a printed puzzle book. Ten Namibian school children, split into three groups, evaluated the game. Both the children inside and outside of VR were excited and eager to play the game through, despite the game being too complex, with too little feedback and a number of design issues, which required much guidance from the researchers. © 2022 Owner/Author.

关键词： Game design

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A Wire delay scalable stream processor architecture

A Wire delay scalable stream processor architecture

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13th IEEE Asia-Pacific computer Systems architecture Conference, ACSAC 2008

作者： Guang, Xu Hong, An Ming, Cong Fang, Wang Yongqing, Ren Department of Computer Science and Technology University of Science and Technology of China Hefei 230026 China Key Laboratory of Computer System and Architecture Chinese Academy of Science Beijing 100080 China

ISBN: (纸本)9781424426836

Growing on-chip wire delays will cause many future microarchitecture to be distributed. The centralized control and data transmission of the conventional stream processor need to be improved, the hardware resources within a single stream processor become tiles on one or more switched micronetworks. In this paper, we introduce the architecture of the tiled stream processor which aims to adapt to the increasing wire resistance. The tiled stream processor consists of tile arrays, the distributed control and data network which connect tiles. The tile arrays include the five type of reused tiles, the control packet transferred in the control network traverse the tile in a cycle. The architecture of the tiled stream processor supports explicit data management in the hardware way and include two level register hierarchy which are controlled by the software to capture the data locality. The tiled stream processor use the stream programming model which are StreamC/KernelC language, the kernel microcode executed in the tiled arrays are statically scheduled into instruction blocks and execute dynamically in an dataflow order. Finally, we discuss features that affect the kernel performance, with the one cycle routing delay the simulator can achieve an average of 10IPC in eight kernels. © 2008 IEEE.

关键词： computer architecture

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Profile guided optimization for dataflow predication

Profile guided optimization for dataflow predication

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13th IEEE Asia-Pacific computer Systems architecture Conference, ACSAC 2008

作者： Li, Wang Hong, An Yongqing, Ren Yaobin, Wang Department of Computer Science and Technology University of Science and Technology of China Hefei 230026 China Key Laboratory of Computer System and Architecture Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)9781424426836

Dataflow predication provides a lightweight full support for predicated execution in dataflow-like architectures. One of its major overhead is the large amounts of fanout trees for distributing predicates to all dependant instructions. Conventional optimizations are predicating only the heads or tails of dataflow chains. Predicating tails offers more speculation but leads to resource contentions and power consumption increasing. Predicating heads is power efficient but reduces speculation and instruction level parallelism. This paper introduces a profile guided technique to combine these optimizations. It uses profiling feedback to guide the compiler in deciding to predicate at the head or tail. By predicating tails on hot paths and predicating heads on infrequent paths, this technique can get performance, power and resource efficiency Performance evaluation result shows that profile guided optimization performs better in removing fanout trees. It has 10.6% speedup over always predicating heads and 2.5% speedup over always predicating tails in performance. © 2008 IEEE.

关键词： Forestry

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Parallel stochastic search for protein secondary structure prediction 5th

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5th International Conference on Parallel Processing and Applied Mathematics, PPAM 2003

作者： Robles, Victor Pérez, María S. Herves, Vanessa Peña, José M. Larrañaga, Pedro Department of Computer Architecture and Technology Technical University of Madrid Madrid Spain Department of Computer Science and Artificial Intelligence University of the Basque Country San Sebastián Spain

ISBN: (纸本)3540219463

Prediction of the secondary structure of a protein from its aminoacid sequence remains an important and difficult task. Up to this moment, three generations of Protein Secondary Structure Algorithms have been defined: The first generation is based on statistical information over single aminoacids, the second generation is based on windows of aminoacids-typically 11-21 aminoacids- and the third generation is based on the usage of evolutionary information. In this paper we propose the usage of naïve Bayes and Interval Estimation Naïve Bayes (IENB) -a new semi naïve Bayes approach- as suitable third generation methods for Protein Secondary Structure Prediction (PSSP). One of the main stages of IENB is based on a heuristic optimization, carried out by estimation of distribution algorithms (EDAs). EDAs are non-deterministic, stochastic and heuristic search strategies that belong to the evolutionary computation approaches. These algorithms under complex problems, like Protein Secondary Structure Prediction, require intensive calculation. This paper also introduces a parallel variant of IENB called PIENB (Parallel Interval Estimation Naïve Bayes). © Springer-Verlag Berlin Heidelberg 2004.

关键词： Evolutionary algorithms

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Expert mutation operators for the evolution of radial basis function neural networks

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6th International Work-Conference on Artificial and Natural Neural Networks, IWANN 2001

作者： González, J. Rojas, I. Pomares, H. Salmerón, M. Department of Computer Architecture and Computer Technology University of Granada Campus de Fuen temev a GranadaE 18071 Spain

ISBN: (纸本)3540422358

This paper compares some m utationoperators containing expert knowledge about the problem of optimizing the parameters of a Radial Basis Function Neural Network. It is sho wn that the expert kno wledge is not abrays able to improve the results obtained by a blind evolutionary algorithm, and that the final results depend strongly on how the expert knowledge is utilized. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Radial basis function networks

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Exploring selection mechanisms for an agent-based distributed evolutionary algorithm 07

Exploring selection mechanisms for an agent-based distribute...

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9th Annual Genetic and Evolutionary Computation Conference, GECCO 2007

作者： Laredo, J.L.J. Eiben, E.A. Schoenauer, M. Castillo, P.A. Mora, A.M. Merelo, J.J. Department of Architecture and Computer Technology University of Granada ETSIT Department of Computer Science Vrije Universiteit Amsterdam Projet TAO INRIA Futurs Univ. Paris-Sud

ISBN: (纸本)159593698X

In this paper we propose an agent-based model of evolutionary algorithms (EAs) which extends seamlessly from concurrent single-host to distributed multi-host installations. Since the model is based on locally executable selection, we focus on the comparison of two selection mechanisms which accomplish with such a restriction: the classical tournament method and a new one called autonomous selection. Using the latter method the population size changes during runtime, hence it is not only interesting as a new selection mechanism, but also from the perspective of scalable networks. Copyright 2007 ACM.

关键词： Multi agent systems

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Effects of Adopting Industry 4.0 on a Manufacturing Plant 11

Effects of Adopting Industry 4.0 on a Manufacturing Plant

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11th International Conference on Reliability, Infocom Technologies and Optimization, ICRITO 2024

作者： Waghanna, Pranav Reddy, Akash Deshpande, Sarthak Chavan, Siddhant Jaiswal, Vishal R. Naranje, Vishal Be It Department of Pune Institute of Computer Technology Pune India It Department of Pune Institute of Computer Technology Pune India School of Engineering Architecture and Interior Design Amity University Dubai United Arab Emirates

ISBN: (纸本)9798350350357

In the era of Industry 4.0, Smart Manufacturing is reshaping how things are made. At the heart of it is the Industrial Internet of Things (IIoT), where smart sensors and connections create a digital system for factories. This paper highlights how IIoT facilitates real-time data exchange, aiding quick decision-making and creating adaptable manufacturing setups. Cyber-Physical Systems (CPS) integration is also discussed, showing how the line between physical and digital elements in manufacturing is getting blurred. Big Data Analytics is another game-changer, supporting data-driven decisions and predictive maintenance. The paper also digs into Artificial Intelligence and Machine Learning, showing how they automate tasks and continuously learn, improving manufacturing processes. Real-world applications are examined, including Digital Twins, advanced robotics like collaborative robots (Cobots), 3D printing, and smart supply chain management. While Smart Manufacturing offers numerous benefits, it's not without challenges. The survey talks about security and privacy concerns, emphasizing the need for strong cybersecurity. Interoperability, ensuring different technologies work seamlessly together, and addressing the workforce skills gap are also explored. The paper ends with examples of successful implementations and looks at future trends, such as the impact of 5G, blockchain in supply chain management, human augmentation, and the push for sustainability in Smart Manufacturing. This survey is a practical guide for anyone interested in understanding the current state and where Smart Manufacturing is headed in the world of Industry 4.0. © 2024 IEEE.

关键词： Cyber Physical System

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Adaptive Data Forwarding Scheme for Diverse Infotainment Services in Vehicular Named Data Networking

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IEEE Transactions on Vehicular technology 2024年第5期74卷 8012-8022页

作者： Khan, Sajjad Ahmad Lim, Huhnkuk Chaudhry, Shehzad Ashraf Kocaeli University Software Engineering Department Izmit41000 Turkey Hoseo University Computer Engineering Department Korea Republic of Abu Dhabi University Department of Computer Science and Information Technology Abu Dhabi United Arab Emirates Department of Software Engineering Faculty of Engineering & Architecture Nisantasi University Istanbul Turkey

Providing diverse infotainment services is crucial for enhancing road safety and improving the overall driving experience in vehicular networks. However, delivering these services within Vehicular Named Data Networking (VNDN) environments presents significant challenges, primarily due to the data broadcast phenomenon and the varying Quality of Service (QoS) requirements of different applications. This paper introduces an adaptive data forwarding scheme designed to effectively manage these challenges and optimize the delivery of infotainment services in VNDN. Our proposed scheme enhances the data packet format by incorporating additional attributes that prioritize data based on its criticality, specifically categorizing it into critical, non-critical, and entertainment data. Furthermore, we introduce an Enhanced Weighted Fair Queuing (EWFQ) policy to optimize the scheduling of data packets according to their importance. Two innovative data forwarding schemes, namely Advanced Push-based Data Forwarding (APDF) and Enhanced Pull-based Data Forwarding (EPDF), are developed to address the needs of critical and non-critical information and entertainment data, respectively. Simulation results demonstrate that our adaptive data forwarding scheme significantly outperforms legacy fragment schemes in delivering infotainment data within dynamic VNDN environments, ensuring reliability and efficiency. This paper contributes to advancing data dissemination strategies in vehicular networks and lays the groundwork for future research in adaptive QoS management. © 1967-2012 IEEE.

关键词： Entertainment industry Quality of service Adaptive systems Delays Data dissemination Vehicle dynamics Scalability Road safety Real-time systems Vehicles

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System to system migration for improving interoperability

System to system migration for improving interoperability

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作者： Krawczyk, Henryk Mizgier, Anna Department of Computer Architecture Gdansk University of Technology Gdansk Poland Information Technology Centre Gdansk University of Technology Gdansk Poland

ISBN: (纸本)9788360779026

This paper analyses different aspects of S2S (system to system) migration, such as data conversion, procedures migration, and human factor. We present problems that may occur during the process, with particular emphasis on data migration issues. The latter part of the paper shows a connection between S2S migration and interoperability. Presented observations and conclusions are based on our experience gained while developing the e-University.

关键词： Interoperability

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