Helen D. Karatza

According to our database1, Helen D. Karatza authored at least 174 papers between 1986 and 2018.

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2018
The impact of workload variability on the energy efficiency of large-scale heterogeneous distributed systems.
Simulation Modelling Practice and Theory, 2018

The impact of checkpointing interval selection on the scheduling performance of real-time fine-grained parallel applications in SaaS clouds under various failure probabilities.
Concurrency and Computation: Practice and Experience, 2018

Scheduling techniques for complex workloads in distributed systems.
Proceedings of the 2nd International Conference on Future Networks and Distributed Systems, 2018

Energy-Aware Scheduling of Real-Time Workflow Applications in Clouds Utilizing DVFS and Approximate Computations.
Proceedings of the 6th IEEE International Conference on Future Internet of Things and Cloud, 2018

Allocating jobs of different priorities to a distributed system with heterogeneous resources.
Proceedings of the 2018 International Conference on Computer, 2018

Task Group Scheduling in Distributed Systems.
Proceedings of the 2018 International Conference on Computer, 2018

2017
Different aspects of workflow scheduling in large-scale distributed systems.
Simulation Modelling Practice and Theory, 2017

High-performance modelling and simulation for big data applications.
Simulation Modelling Practice and Theory, 2017

Smart Cities and Internet of Things.
Simulation Modelling Practice and Theory, 2017

Performance evaluation of cloud-based log file analysis with Apache Hadoop and Apache Spark.
Journal of Systems and Software, 2017

High performance system based on Cloud and beyond: Jungle Computing.
J. Comput. Science, 2017

Simulation-Based Performance Evaluation of an Energy-Aware Heuristic for the Scheduling of HPC Applications in Large-Scale Distributed Systems.
Proceedings of the Companion Proceedings of the 8th ACM/SPEC on International Conference on Performance Engineering, 2017

Energy Efficiency in Large Scale Distributed Systems: The Role of Simulation.
Proceedings of the Companion Proceedings of the 8th ACM/SPEC on International Conference on Performance Engineering, 2017

Performance and Overhead Study of Containers Running on Top of Virtual Machines.
Proceedings of the 19th IEEE Conference on Business Informatics, 2017

Periodic scheduling of mixed workload in distributed systems.
Proceedings of the International Conference on Engineering, Technology and Innovation, 2017

The Effect of Workload Computational Demand Variability on the Performance of a SaaS Cloud with a Multi-tier SLA.
Proceedings of the 5th IEEE International Conference on Future Internet of Things and Cloud, 2017

The impact of data locality on the performance of a SaaS cloud with real-time data-intensive applications.
Proceedings of the 21st IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications, 2017

2016
Advances on information and communication systems.
Simulation Modelling Practice and Theory, 2016

Power-aware Bag-of-Tasks scheduling on heterogeneous platforms.
Cluster Computing, 2016

Bag-of-Tasks Load Balancing on Power-Aware Clusters.
Proceedings of the 24th Euromicro International Conference on Parallel, 2016

Honeypot-Powered Malware Reverse Engineering.
Proceedings of the 2016 IEEE International Conference on Cloud Engineering Workshop, 2016

2015
A meta-heuristic optimization approach to the scheduling of bag-of-tasks applications on heterogeneous clouds with multi-level arrivals and critical jobs.
Simulation Modelling Practice and Theory, 2015

Special issue on "Techniques and applications for sustainable ultrascale computing systems".
Simulation Modelling Practice and Theory, 2015

Guest editor's introduction: Special issue on resource management in mobile clouds.
Simulation Modelling Practice and Theory, 2015

Multi-criteria scheduling of Bag-of-Tasks applications on heterogeneous interlinked clouds with simulated annealing.
Journal of Systems and Software, 2015

Towards scheduling for Internet-of-Things applications on clouds: a simulated annealing approach.
Concurrency and Computation: Practice and Experience, 2015

A cloud system for health care.
Proceedings of the 19th Panhellenic Conference on Informatics, 2015

Cloud Computing - State-of-the-Art and Future Research Trends.
Proceedings of the ICSOFT-EA 2015, 2015

A Cost-Effective and QoS-Aware Approach to Scheduling Real-Time Workflow Applications in PaaS and SaaS Clouds.
Proceedings of the 3rd International Conference on Future Internet of Things and Cloud, 2015

Message from the IWSC 2015 Workshop Organizers.
Proceedings of the 39th Annual Computer Software and Applications Conference, 2015

Job scheduling in a grid cluster.
Proceedings of the International Conference on Computer, 2015

Scheduling bags of tasks and gangs in a distributed system.
Proceedings of the International Conference on Computer, 2015

2014
Energy-efficient real-time heterogeneous cluster scheduling with node replacement due to failures.
The Journal of Supercomputing, 2014

Real-time data dissemination in mobile peer-to-peer networks.
Journal of Systems and Software, 2014

The impact of resource heterogeneity on the timeliness of hard real-time complex jobs.
Proceedings of the 7th International Conference on PErvasive Technologies Related to Assistive Environments, 2014

Bag-of-Task Scheduling on Power-Aware Clusters Using a DVFS-Based Mechanism.
Proceedings of the 2014 IEEE International Parallel & Distributed Processing Symposium Workshops, 2014

Scheduling jobs with different characteristics in distributed systems.
Proceedings of the International Conference on Computer, 2014

2013
Performance evaluation and energy consumption of a real-time heterogeneous grid system using DVS and DPM.
Simulation Modelling Practice and Theory, 2013

Special Issue on Simulation-based Performance Evaluation of Infrastructures for the Internet of Things: Connectivity and resource considerations in the mobility Era.
Simulation Modelling Practice and Theory, 2013

Special issue on energy efficiency in grids and clouds.
Simulation Modelling Practice and Theory, 2013

Two-server parallel system with pure space sharing and Markovian arrivals.
Computers & OR, 2013

Performance Evaluation of Opportunistic Resource-Sharing Scheme Using Socially Oriented Outsourcing in Wireless Devices.
Comput. J., 2013

Dynamic Voltage Scaling Scheduling on Power-Aware Clusters under Power Constraints.
Proceedings of the 17th IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications, 2013

2012
Performance evaluation of a real-time grid system using power-saving capable processors.
The Journal of Supercomputing, 2012

Evaluation of gang scheduling performance and cost in a cloud computing system.
The Journal of Supercomputing, 2012

A tier-based asynchronous scheduling scheme for delay constrained energy efficient connectivity in asymmetrical wireless devices.
The Journal of Supercomputing, 2012

Scheduling of frequently communicating tasks.
Int. J. Communication Systems, 2012

Multi-Criteria Job Scheduling in Grid Using an Accelerated Genetic Algorithm.
J. Grid Comput., 2012

Scheduling real-time DAGs in heterogeneous clusters by combining imprecise computations and bin packing techniques for the exploitation of schedule holes.
Future Generation Comp. Syst., 2012

Directing requests and acquiring knowledge in a large-scale Grid system.
Proceedings of the International Symposium on Performance Evaluation of Computer & Telecommunication Systems, 2012

Parallel Job Scheduling on a Dynamic Cloud Model with Variable Workload and Active Balancing.
Proceedings of the 16th Panhellenic Conference on Informatics, PCI 2012, 2012

A Simulation Study of Multi-criteria Scheduling in Grid Based on Genetic Algorithms.
Proceedings of the 10th IEEE International Symposium on Parallel and Distributed Processing with Applications, 2012

Topic 2: Performance Prediction and Evaluation.
Proceedings of the Euro-Par 2012 Parallel Processing - 18th International Conference, 2012

Maximizing Performance and Energy Efficiency of a Real-Time Heterogeneous 2-Level Grid System Using DVS.
Proceedings of the 16th IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications, 2012

Performance of Clouds - Issues and Research Directions.
Proceedings of the CLOSER 2012 - Proceedings of the 2nd International Conference on Cloud Computing and Services Science, Porto, Portugal, 18, 2012

2011
Gang scheduling in a two-cluster system implementing migrations and periodic feedback.
Simulation, 2011

A clairvoyant site allocation policy based on service demands of jobs in a computational grid.
Simulation Modelling Practice and Theory, 2011

Performance and energy aware cluster-level scheduling of compute-intensive jobs with unknown service times.
Simulation Modelling Practice and Theory, 2011

Scheduling multiple task graphs in heterogeneous distributed real-time systems by exploiting schedule holes with bin packing techniques.
Simulation Modelling Practice and Theory, 2011

AntP2PR: An ant intelligence inspired routing scheme for Peer-to-Peer networks.
Simulation Modelling Practice and Theory, 2011

Resource discovery in a Grid system: Directing requests to trustworthy virtual organizations based on global trust values.
Journal of Systems and Software, 2011

Acquiring Knowledge in a Grid System via a Resource Discovery Scheme.
IJMSSC, 2011

Gang scheduling in multi-core clusters implementing migrations.
Future Generation Comp. Syst., 2011

Embedded Socio-oriented Model for End-to-End Reliable Stream Schedules by Using Collaborative Outsourcing in MP2P Systems.
Comput. J., 2011

Performance and cost evaluation of Gang Scheduling in a Cloud Computing system with job migrations and starvation handling.
Proceedings of the 16th IEEE Symposium on Computers and Communications, 2011

SPECT: A system for Peer-to-Peer economic transactions.
Proceedings of the 16th IEEE Symposium on Computers and Communications, 2011

The Impact of Input Error on the Scheduling of Task Graphs with Imprecise Computations in Heterogeneous Distributed Real-Time Systems.
Proceedings of the Analytical and Stochastic Modeling Techniques and Applications, 2011

2010
The impact of service demand variability on resource allocation strategies in a grid system.
ACM Trans. Model. Comput. Simul., 2010

A Gossip-Based Optimistic Replication for Efficient Delay-Sensitive Streaming Using an Interactive Middleware Support System.
IEEE Systems Journal, 2010

Task cluster scheduling in a grid system.
Simulation Modelling Practice and Theory, 2010

Scheduling multiple task graphs with end-to-end deadlines in distributed real-time systems utilizing imprecise computations.
Journal of Systems and Software, 2010

Performance evaluation of bag of gangs scheduling in a heterogeneous distributed system.
Journal of Systems and Software, 2010

Real-time performance evaluation of asynchronous time division traffic-aware and delay-tolerant scheme in ad hoc sensor networks.
Int. J. Communication Systems, 2010

Multi-Site Allocation Policies on a Grid and Local Level.
Electr. Notes Theor. Comput. Sci., 2010

Clairvoyant site allocation of jobs with highly variable service demands in a computational grid.
Proceedings of the 24th IEEE International Symposium on Parallel and Distributed Processing, 2010

Job Scheduling in a Distributed System Using Backfilling with Inaccurate Runtime Computations.
Proceedings of the CISIS 2010, 2010

2009
Fault-tolerant Gang Scheduling in Distributed Real-time Systems Utilizing Imprecise Computations.
Simulation, 2009

The impact of task service time variability on gang scheduling performance in a two-cluster system.
Simulation Modelling Practice and Theory, 2009

Performance of gang scheduling strategies in a parallel system.
Simulation Modelling Practice and Theory, 2009

Reputation based friend-to-friend networks.
Peer-to-Peer Networking and Applications, 2009

Communication cost effective scheduling policies of nonclairvoyant jobs with load balancing in a grid.
Journal of Systems and Software, 2009

Enabling high throughput for delay sensitive streams using epidemic replication in clustered MP2P devices.
Proceedings of the 5th International Conference on Mobile Multimedia Communications, 2009

Performance evaluation of gang scheduling in a two-cluster system with migrations.
Proceedings of the 23rd IEEE International Symposium on Parallel and Distributed Processing, 2009

Performance evaluation of a resource discovery scheme in a Grid environment prone to resource failures.
Proceedings of the 23rd IEEE International Symposium on Parallel and Distributed Processing, 2009

Introduction.
Proceedings of the Euro-Par 2009 Parallel Processing, 2009

Scheduling Gangs with Different Distributions in Gangs' Degree of Parallelism in a Multi-Site System.
Proceedings of the 2009 Fourth Balkan Conference in Informatics, 2009

2008
The Impact of Critical Sporadic Jobs on Gang Scheduling Performance in Distributed Systems.
Simulation, 2008

An ontology-based collaborative service-oriented simulation framework with Microsoft Robotics Studio®.
Simulation Modelling Practice and Theory, 2008

Resource Discovery in a dynamical grid based on Re-routing Tables.
Simulation Modelling Practice and Theory, 2008

Under storage constraints of epidemic backup node selection using HyMIS architecture for data replication in mobile peer-to-peer networks.
Journal of Systems and Software, 2008

A two-class parallel system with general service times of the parallel class.
J. Comput. Syst. Sci., 2008

Resource Discovery in a Grid System Based on Matchmaking-Routers.
Proceedings of the Panhellenic Conference on Informatics, 2008

End-to-end layered asynchronous scheduling scheme for energy aware QoS provision in asymmetrical wireless devices.
Proceedings of the Workshops Proceedings of the 12th International IEEE Enterprise Distributed Object Computing Conference, 2008

Resource Allocation Strategies in a 2-Level Hierarchical Grid System.
Proceedings of the Proceedings 41st Annual Simulation Symposium (ANSS-41 2008), 2008

2007
Quality of Service Measures of Mobile Ad-hoc Wireless Network using Energy Consumption Mitigation with Asynchronous Inactivity Periods.
Simulation, 2007

Preface: New Challenges in Large-Scale Computer Systems and Network Modeling and Simulation.
Simulation, 2007

Dynamic non-preemptive re-allocation policies between two sites with reconfigurable servers.
Simulation Modelling Practice and Theory, 2007

An M/M/2 parallel system model with pure space sharing among rigid jobs.
Mathematical and Computer Modelling, 2007

Dispersed information diffusion with level and schema-based coordination in mobile peer to peer networks.
Cluster Computing, 2007

An Optimal Adaptive Approach using Behavioral Promiscuous Caching and Storage-Capacity Characteristics for Energy Conservation in Asymmetrical Wireless Devices.
Proceedings of the IEEE 18th International Symposium on Personal, 2007

Performance Measures of Stream-Oriented Power Consumption for Asymmetrical Communication in Wireless Ad-Hoc Networks.
Proceedings of the Proceedings 40th Annual Simulation Symposium (ANSS-40 2007), 2007

2006
Guest Editorial: Recent Advances in Network Modeling and Simulation.
Simulation, 2006

Introduction to the Special Issue: On Internet and Wireless Network Performance.
Simulation, 2006

Performance evaluation of an on demand tunable resource allocation apparatus using constrained active network.
Simulation Modelling Practice and Theory, 2006

Distributed Systems Simulation.
Simulation Modelling Practice and Theory, 2006

On the efficiency and performance evaluation of the bandwidth clustering scheme for adaptive and reliable resource allocation.
Journal of Systems and Software, 2006

Optimized QoS priority routing for service tunability and overhead reduction using swarm based active network scheme.
Computer Communications, 2006

A two-class parallel queue with pure space sharing among rigid jobs and general service times.
Proceedings of the 1st International Conference on Performance Evaluation Methodolgies and Tools, 2006

Multi-site Scheduling with Multiple Job Reservations and Forecasting Methods.
Proceedings of the Parallel and Distributed Processing and Applications, 2006

On the performance analysis of recursive data replication scheme for file sharing in mobile peer-to-peer devices using the HyMIS scheme.
Proceedings of the 20th International Parallel and Distributed Processing Symposium (IPDPS 2006), 2006

Swarm-based Active Tunable Routing for Overhead Reduction in Multiservice Networks.
Proceedings of the Proceedings 39th Annual Simulation Symposium (ANSS-39 2006), 2006

2005
Guest Editor's Introduction: Special Issue On Modeling and Simulation of Emerging Wireless and Sensor Network Technologies and Applications.
Simulation, 2005

Adaptive traffic-based control method for energy conservation in wireless devices.
Simulation Modelling Practice and Theory, 2005

Epidemic Collaborative Geocast for Reliable Segmented File Sharing in Mobile Peer-to-Peer Devices.
Proceedings of the Advances in Informatics, 2005

Segmented File Sharing with Recursive Epidemic Placement Policy for Reliability in Mobile Peer-to-Peer Devices.
Proceedings of the 13th International Symposium on Modeling, 2005

Reliable file sharing scheme for mobile peer-to-peer users using epidemic selective caching.
Proceedings of the International Conference on Pervasive Services 2005, 2005

Bandwidth Clustering for Reliable and Prioritized Network Routing Using Split Agent-Based Method.
Proceedings of the 25th International Conference on Distributed Computing Systems Workshops (ICDCS 2005 Workshops), 2005

Handling Delay Sensitive Contents Using Adaptive Traffic-Based Control Method for Minimizing Energy Consumption in Wireless Devices.
Proceedings of the Proceedings 38th Annual Simulation Symposium (ANSS-38 2005), 2005

2004
Itinerary-Based Segmented Dissemination on a Peer-to-Peer Network.
Simulation, 2004

Preface to Special Issue on Modeling and Simulation Applications in Cluster and Grid Computing.
Simulation, 2004

Simulation study of multitasking in distributed server systems with variable workload.
Simulation Modelling Practice and Theory, 2004

Modeling and simulation of distributed systems and networks.
Simulation Modelling Practice and Theory, 2004

File distribution using a peer-to-peer network--a simulation study.
Journal of Systems and Software, 2004

Brute force web search for wireless devices using mobile agents.
Journal of Systems and Software, 2004

Performance modeling and analysis of computer systems and networks.
Journal of Systems and Software, 2004

Computer systems.
Journal of Systems and Software, 2004

Split agent-based routing in interconnected networks.
Int. J. Communication Systems, 2004

An Excellent Resource for Parallel Computing.
IEEE Distributed Systems Online, 2004

A Valuable Resource of Programmers Using .NET Technology.
IEEE Distributed Systems Online, 2004

Intelligent Software Agents' Influence on Media-Based Systems.
IEEE Distributed Systems Online, 2004

Agent-based throughput response in presence of node and/or link failure (on demand) for circuit switched telecommunication networks.
Computer Communications, 2004

An on Demand Path Marking and Capacity Reservation Method using Split Agent.
Proceedings of the 2nd International Workshop on Challenges of Large Applications in Distributed Environments, 2004

Optimized Dissemination of Highly Anticipated Content over an Itinerary Based P2P Network.
Proceedings of the Proceedings 37th Annual Simulation Symposium (ANSS-37 2004), 2004

Adaptive Energy Conservation Model using Dynamic Caching for Wireless Devices.
Proceedings of the Proceedings 37th Annual Simulation Symposium (ANSS-37 2004), 2004

2003
Parallel Job Scheduling in Homogeneous Distributed Systems.
Simulation, 2003

Scheduling in Distributed Systems.
Proceedings of the Performance Tools and Applications to Networked Systems, 2003

Gang Scheduling in a Distributed System under Processor Failures and Time-Varying Gang Size.
Proceedings of the 9th IEEE International Workshop on Future Trends of Distributed Computing Systems (FTDCS 2003), 2003

Fault Tolerant Peer-to-Peer Dissemination Network.
Proceedings of the Euro-Par 2003. Parallel Processing, 2003

Large Scale Dissemination Using a Peer-to-Peer Network.
Proceedings of the 3rd IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2003), 2003

Dissemination Scenarios in Peer-to-Peer Networks.
Proceedings of the Proceedings 36th Annual Simulation Symposium (ANSS-36 2003), Orlando, Florida, USA, March 30, 2003

Performance Analysis of Parallel Job Scheduling in Distributed Systems.
Proceedings of the Proceedings 36th Annual Simulation Symposium (ANSS-36 2003), Orlando, Florida, USA, March 30, 2003

2002
A Simulation Study of Epoch Load Sharing in Distributed Systems.
Simulation, 2002

Mobile agents as a middleware for data dissemination.
Neural Parallel & Scientific Comp., 2002

Task scheduling performance in distributed systems with time varying workload.
Neural Parallel & Scientific Comp., 2002

Book Review: An Owner's Manual for High Performance Computing (A review of Techniques for Optimizing Applications: High Performance Computing by Rajat P. Garg and Ilya Sharapov).
IEEE Distributed Systems Online, 2002

Parallel and distributed systems: load sharing in heterogeneous distributed systems.
Proceedings of the 34th Winter Simulation Conference: Exploring New Frontiers, 2002

Scheduling Issues in a Partitionable Parallel System.
Proceedings of the 16<sup>th</sup> European Simulation Multiconference: Modelling and Simulation 2002, 2002

Scheduling a Job Mix in a Partitionable Parallel System.
Proceedings of the Proceedings 35th Annual Simulation Symposium (ANSS-35 2002), 2002

Gang Scheduling Performance on a Cluster of Non-Dedicated Workstations.
Proceedings of the Proceedings 35th Annual Simulation Symposium (ANSS-35 2002), 2002

2001
Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2001

Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2001

Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2001

Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2001

Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2001

Gang Scheduling Performance under Different Distributions of Gang Size.
Scalable Computing: Practice and Experience, 2001

Job scheduling in heterogeneous distributed systems.
Journal of Systems and Software, 2001

Epoch Load Sharing in a Network of Workstations.
Proceedings of the Proceedings 34th Annual Simulation Symposium (SS 2001), 2001

2000
Modeling and Simulation Applications in Scheduling Multiprocessor Systems.
Simulation, 2000

Book Review : Simulation with Visual SLAM and Awesim by A. Alan B. Pritsker and Jean J. O'Reilly.
Simulation, 2000

Cache affinity and resequencing in a shared-memory multiprocessing system.
Journal of Systems and Software, 2000

A simulation model of backfilling and I/O scheduling in a partitionable parallel system.
Proceedings of the 32nd conference on Winter simulation, WSC 2000, 2000

Scheduling Strategies for Multitasking in a Distributed System.
Proceedings of the Proceedings 33th Annual Simulation Symposium (SS 2000), 2000

1999
A Simulation Model of Task Cluster Scheduling in Distributed Systems.
Proceedings of the 7th IEEE Workshop on Future Trends of Distributed Computer Systems (FTDCS '99), 1999

A Simulation - Based Performance Analysis of Gang Scheduling in a Distributed System.
Proceedings of the Proceedings 32nd Annual Simulation Symposium (SS '99), 1999

1998
Task routing and resequencing in a multiprocessor system.
Journal of Systems and Software, 1998

Assignment of Programs in a Distributed System with Resequencing.
Proceedings of the Proceedings 31st Annual Simulation Symposium (SS '98), 1998

1997
Simulation Study of Task Scheduling and Resequencing in a Multiprocessing System.
Simulation, 1997

Performance Issues of Task Routing and Task Scheduling with Resequencing in Homogeneous Distributed Systems.
Proceedings of the Proceedings 30st Annual Simulation Symposium (SS '97), April 7-9, 1997, 1997

1996
Multitasking and resequencing in a two-stage multiprocessing system.
Proceedings of the 28th conference on Winter simulation, 1996

1995
Simulation Study of Multitasking and Resequencing in a Homogeneous Distributed System.
Proceedings of the EUROSIM'96, 1995

1994
Simulation study of a system with two processors linked in tandem.
Journal of Systems and Software, 1994

1993
Book Reviews : Simulation Modeling and Analysis (2nd Edition) A.M.Law and W.D.Kelton McGraw-Hill.
Simulation, 1993

1987
Simulation Study of Multitasking of Closed Computer System Networks.
Comput. Syst. Sci. Eng., 1987

1986
Simulation Study of Multitasking of Open Computer System Networks.
Comput. Syst. Sci. Eng., 1986


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