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Helen D. Karatza
Eleni Karatza
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- affiliation: Aristotle University of Thessaloniki, Greece
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2020 – today
- 2025
- [j130]Helen D. Karatza:
Scheduling bag-of-task jobs with security requirements and dual-criteria partial computations in a fog - cloud system. Simul. Model. Pract. Theory 140: 103082 (2025) - 2024
- [j129]Helen D. Karatza:
Scheduling critical periodic jobs with selective partial computations along with gang jobs. Big Data Res. 36: 100453 (2024) - [j128]Helen D. Karatza
, Georgios L. Stavrinides:
Resource allocation and aging priority-based scheduling of linear workflow applications with transient failures and selective imprecise computations. Clust. Comput. 27(4): 5473-5488 (2024) - [j127]Georgios L. Stavrinides
, Helen D. Karatza
:
Security, Cost and Energy Aware Scheduling of Real-Time IoT Workflows in a Mist Computing Environment. Inf. Syst. Frontiers 26(4): 1223-1241 (2024) - [j126]Helen D. Karatza:
Modeling and simulation of services computing✰. Simul. Model. Pract. Theory 134: 102944 (2024) - [j125]Helen D. Karatza:
Modeling and Simulation of Cloud Computing for e-Business. Simul. Model. Pract. Theory 135: 102988 (2024) - [c111]Helen D. Karatza:
Allocation and Scheduling of Linear Workflows Incorporating Security Constraints Across Fog and Cloud Infrastructures. CITS 2024: 1-8 - [c110]Helen D. Karatza:
Scheduling Bag-of-Task Jobs with Security Requirements and Partial Computations in a Fog - Cloud System. FiCloud 2024: 1-8 - [c109]Helen D. Karatza:
Scheduling Linear Workflows with Multicriteria based Partial Computations in a Cloud-Fog-Mist Environment. FMEC 2024: 107-113 - 2023
- [j124]Ilias Mavridis
, Helen D. Karatza
:
Orchestrated sandboxed containers, unikernels, and virtual machines for isolation-enhanced multitenant workloads and serverless computing in cloud. Concurr. Comput. Pract. Exp. 35(11) (2023) - [j123]Georgios L. Stavrinides, Helen D. Karatza
:
Cyber-physical systems, digital twins and Industry 4.0: The role of modeling and simulation. Simul. Model. Pract. Theory 124: 102727 (2023) - [j122]Helen D. Karatza
:
Introduction on cloud, fog and mist computing - Resource allocation and scheduling perspectives. Simul. Model. Pract. Theory 128: 102822 (2023) - [c108]Helen D. Karatza:
A Hybrid Epoch Scheduling Scheme of Mixed Workloads with Different Types of Jobs on Distributed Processors. AICCSA 2023: 1-7 - [c107]Helen D. Karatza
:
Scheduling Different Types of Linear Workflows with Partial Computations in a Distributed System. CCCI 2023: 1-7 - [c106]Helen D. Karatza
:
Scheduling Delay-Sensitive Bag-of-Task Jobs with Imprecise Computations on Distributed Resources. CITS 2023: 1-6 - [c105]Helen D. Karatza
:
Scheduling Critical Periodic Jobs with Partial Computations along with Gang Jobs. FiCloud 2023: 87-94 - [c104]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Linear Workflows with Dynamically Adjustable Exit Tasks on Distributed Resources. ISADS 2023: 1-8 - 2022
- [j121]Georgios L. Stavrinides, Helen D. Karatza
:
"Containerization, microservices and serverless cloud computing: Modeling and simulation". Simul. Model. Pract. Theory 118: 102551 (2022) - [j120]Georgios L. Stavrinides, Helen D. Karatza
:
Leveraging blockchain and AI for IoT, mist, fog and cloud computing: A performance modeling and simulation perspective. Simul. Model. Pract. Theory 121: 102661 (2022) - [c103]Georgios L. Stavrinides, Helen D. Karatza
:
Resource Allocation and Scheduling of Linear Workflow Applications with Ageing Priorities and Transient Failures. AICCSA 2022: 1-8 - [c102]Georgios L. Stavrinides, Helen D. Karatza
:
Workload Scheduling in Fog and Cloud Environments: Emerging Concepts and Research Directions. Honoring Professor Mohammad S. Obaidat 2022: 3-32 - [c101]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Tightly Coupled Parallel Jobs With Runtime-Extended Tasks on Distributed Resources. CCCI 2022: 1-7 - [c100]Georgios L. Stavrinides, Helen D. Karatza
:
Security-Aware Orchestration of Linear Workflows on Distributed Resources. CITS 2022: 1-5 - [c99]Georgios L. Stavrinides, Helen D. Karatza
:
The Effect of Laxity of Real-Time Workflow Applications on the Performance of Elastic Cloud Resources. FiCloud 2022: 1-8 - [c98]Georgios L. Stavrinides, Helen D. Karatza
:
Resource Allocation and Scheduling of Real-Time Workflow Applications in an IoT-Fog-Cloud Environment. FMEC 2022: 1-8 - 2021
- [j119]Dimitrios Tychalas
, Helen D. Karatza
:
SaMW: a probabilistic meta-heuristic algorithm for job scheduling in heterogeneous distributed systems powered by microservices. Clust. Comput. 24(3): 1735-1759 (2021) - [j118]Georgios L. Stavrinides
, Helen D. Karatza
:
Orchestrating real-time IoT workflows in a fog computing environment utilizing partial computations with end-to-end error propagation. Clust. Comput. 24(4): 3629-3650 (2021) - [j117]Georgios L. Stavrinides
, Helen D. Karatza
:
Cost-aware cloud bursting in a fog-cloud environment with real-time workflow applications. Concurr. Comput. Pract. Exp. 33(23) (2021) - [j116]Georgios L. Stavrinides
, Helen D. Karatza
:
Dynamic scheduling of bags-of-tasks with sensitive input data and end-to-end deadlines in a hybrid cloud. Multim. Tools Appl. 80(11): 16781-16803 (2021) - [j115]Helen D. Karatza
, Igor V. Kotenko
:
Guest Editors' Introduction "Modeling and Simulation for Intelligent Distributed Computing". Simul. Model. Pract. Theory 109: 102297 (2021) - [j114]Raffaele Montella, Giancarlo Fortino, Eleni Karatza:
Special issue on IoT modeling and simulation in smart-anything computation at the edge. Simul. Model. Pract. Theory 109: 102308 (2021) - [j113]Georgios L. Stavrinides, Helen D. Karatza
:
Guest editors' introduction: "Modeling and simulation of hybrid clouds". Simul. Model. Pract. Theory 111: 102349 (2021) - [j112]Georgios L. Stavrinides, Helen D. Karatza
:
Multicriteria scheduling of linear workflows with dynamically varying structure on distributed platforms. Simul. Model. Pract. Theory 112: 102369 (2021) - [c97]Georgios L. Stavrinides, Helen D. Karatza
:
Fault-Tolerant Orchestration of Bags-of-Tasks with Application-Directed Checkpointing in a Distributed Environment. CCCI 2021: 1-6 - [c96]Georgios L. Stavrinides, Helen D. Karatza
:
Resource Assignment Strategies for Bags-of-Tasks in Distributed Systems. CITS 2021: 1-5 - [c95]Helen D. Karatza:
Large Scale Real-time Distributed Systems - Resource Allocation and Scheduling Issues. ECBS 2021: 1:1-1:2 - [c94]Georgios L. Stavrinides, Helen D. Karatza
:
Security and Cost Aware Scheduling of Real-Time IoT Workflows in a Mist Computing Environment. FiCloud 2021: 34-41 - [c93]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Real-Time IoT Workflows in a Fog Computing Environment Utilizing Cloud Resources with Data-Aware Elasticity. FMEC 2021: 1-8 - [c92]Helen D. Karatza:
Keynote Speech 1: Leveraging Cloud and Fog Computing for Real-Time Applications: Resource Allocation and Scheduling Issues. IDSTA 2021: 1 - [c91]Georgios L. Stavrinides, Helen D. Karatza
:
Orchestrating Bag-of-Tasks Applications with Dynamically Spawned Tasks in a Distributed Environment. SPECTS 2021: 1-8 - 2020
- [j111]Georgios L. Stavrinides
, Helen D. Karatza
:
Scheduling real-time bag-of-tasks applications with approximate computations in SaaS clouds. Concurr. Comput. Pract. Exp. 32(1) (2020) - [j110]Vasco Amaral
, Beatriz Norberto
, Miguel Goulão
, Marco Aldinucci
, Siegfried Benkner
, Andrea Bracciali, Paulo Carreira, Edgars Celms
, Luís Correia
, Clemens Grelck
, Helen D. Karatza
, Christoph W. Kessler
, Peter Kilpatrick
, Hugo F. M. C. Martiniano, Ilias Mavridis, Sabri Pllana
, Ana Respício
, José Simão
, Luís Veiga
, Ari Visa
:
Programming languages for data-Intensive HPC applications: A systematic mapping study. Parallel Comput. 91 (2020) - [j109]Dimitrios Tychalas
, Helen D. Karatza
:
A Scheduling Algorithm for a Fog Computing System with Bag-of-Tasks Jobs: Simulation and Performance Evaluation. Simul. Model. Pract. Theory 98 (2020) - [j108]Helen D. Karatza
, Georgios L. Stavrinides:
"Modeling and simulation of fog computing". Simul. Model. Pract. Theory 101: 102066 (2020) - [c90]Georgios L. Stavrinides, Helen D. Karatza
:
Weighted Scheduling of Mixed Gang Jobs on Distributed Resources. CCCI 2020: 1-6 - [c89]Georgios L. Stavrinides, Helen D. Karatza
:
Multi-Criteria Scheduling of Complex Workloads on Distributed Resources. CITS 2020: 1-5 - [c88]Georgios L. Stavrinides, Helen D. Karatza
:
Orchestration of Real-Time Workflows with Varying Input Data Locality in a Heterogeneous Fog Environment. FMEC 2020: 202-209 - [c87]Helen D. Karatza:
Cloud vs Fog Computing - Scheduling Real-Time Applications. MECO 2020: 1 - [c86]Dimitrios Tychalas, Helen D. Karatza
:
An Advanced Weighted Round Robin Scheduling Algorithm. PCI 2020: 188-191 - [c85]Georgios L. Stavrinides, Helen D. Karatza:
Scheduling a Time-Varying Workload of Multiple Types of Jobs on Distributed Resources. SPECTS 2020: 1-6
2010 – 2019
- 2019
- [j107]Ilias Mavridis, Helen D. Karatza
:
Combining containers and virtual machines to enhance isolation and extend functionality on cloud computing. Future Gener. Comput. Syst. 94: 674-696 (2019) - [j106]Georgios L. Stavrinides
, Helen D. Karatza
:
An energy-efficient, QoS-aware and cost-effective scheduling approach for real-time workflow applications in cloud computing systems utilizing DVFS and approximate computations. Future Gener. Comput. Syst. 96: 216-226 (2019) - [j105]Georgios L. Stavrinides
, Helen D. Karatza
:
A hybrid approach to scheduling real-time IoT workflows in fog and cloud environments. Multim. Tools Appl. 78(17): 24639-24655 (2019) - [j104]Georgios L. Stavrinides
, Helen D. Karatza
:
Performance evaluation of a SaaS cloud under different levels of workload computational demand variability and tardiness bounds. Simul. Model. Pract. Theory 91: 1-12 (2019) - [j103]Helen D. Karatza
, Georgios L. Stavrinides:
Modeling and simulation of cloud computing and big data. Simul. Model. Pract. Theory 93: 1-2 (2019) - [c84]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Different Types of Gang Jobs in Distributed Systems. CITS 2019: 1-5 - [c83]Eleni Karatza:
Clouds for Real-Time Applications Scheduling Issues. CLOSER 2019: 5-7 - [c82]Eleni Karatza:
Clouds for Real-Time Applications - Scheduling Issues and Research Directions. COMPLEXIS 2019: 9-11 - [c81]Georgios L. Stavrinides, Helen D. Karatza
:
Cost-Effective Utilization of Complementary Cloud Resources for the Scheduling of Real-Time Workflow Applications in a Fog Environment. FiCloud 2019: 1-8 - [c80]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Single-Task Jobs along with Bag-of-Task-Chains in Distributed Systems. ICFNDS 2019: 32:1-32:6 - [c79]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Bag-of-Task-Chains in Distributed Systems. ISADS 2019: 1-6 - [c78]Ilias Mavridis, Helen D. Karatza
:
Lightweight Virtualization Approaches for Software-Defined Systems and Cloud Computing: An Evaluation of Unikernels and Containers. SDS 2019: 171-178 - [d2]Vasco Amaral
, Beatriz Norberto, Miguel Goulão
, Marco Aldinucci, Siegfried Benkner, Andrea Bracciali, Paulo Carreira
, Edgars Celms, Luís Correia, Clemens Grelck
, Helen D. Karatza, Christoph W. Kessler
, Peter Kilpatrick
, Hugo F. M. C. Martiniano, Ilias Mavridis, Sabri Pllana, Ana Respício
, José Simão
, Luís Veiga
:
Companion data of a Systematic Mapping Study of Programming Languages for Data-Intensive HPC Applications. Zenodo, 2019 - [d1]Vasco Amaral
, Beatriz Norberto, Miguel Goulão
, Marco Aldinucci, Siegfried Benkner, Andrea Bracciali, Paulo Carreira
, Edgars Celms, Luís Correia, Clemens Grelck
, Helen D. Karatza, Christoph W. Kessler
, Peter Kilpatrick
, Hugo F. M. C. Martiniano, Ilias Mavridis, Sabri Pllana, Ana Respício
, José Simão
, Luís Veiga
:
Companion data of a Systematic Mapping Study of Programming Languages for Data-Intensive HPC Applications. Zenodo, 2019 - 2018
- [j102]Georgios L. Stavrinides
, Helen D. Karatza
:
The impact of checkpointing interval selection on the scheduling performance of real-time fine-grained parallel applications in SaaS clouds under various failure probabilities. Concurr. Comput. Pract. Exp. 30(12) (2018) - [j101]Georgios L. Stavrinides
, Helen D. Karatza
:
The impact of workload variability on the energy efficiency of large-scale heterogeneous distributed systems. Simul. Model. Pract. Theory 89: 135-143 (2018) - [j100]Francisco Almeida
, Marcos Dias de Assunção, Jorge G. Barbosa
, Vicente Blanco Pérez
, Ivona Brandic, Georges Da Costa
, Manuel F. Dolz
, Anne C. Elster, Mateusz Jarus, Helen D. Karatza
, Laurent Lefèvre, Ilias Mavridis, Ariel Oleksiak
, Anne-Cécile Orgerie
, Jean-Marc Pierson
:
Energy monitoring as an essential building block towards sustainable ultrascale systems. Sustain. Comput. Informatics Syst. 17: 27-42 (2018) - [c77]Georgios L. Stavrinides, Helen D. Karatza
:
Task Group Scheduling in Distributed Systems. CITS 2018: 1-5 - [c76]Stylianos Zikos, Helen D. Karatza:
Allocating jobs of different priorities to a distributed system with heterogeneous resources. CITS 2018: 1-5 - [c75]Georgios L. Stavrinides, Helen D. Karatza
:
Energy-Aware Scheduling of Real-Time Workflow Applications in Clouds Utilizing DVFS and Approximate Computations. FiCloud 2018: 33-40 - [c74]Dimitrios Tychalas, Helen D. Karatza
:
Simulation and performance evaluation of a fog system. FMEC 2018: 26-33 - [c73]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling techniques for complex workloads in distributed systems. ICFNDS 2018: 34:1-34:6 - [p2]Georgios L. Stavrinides, Helen D. Karatza
:
Scheduling Data-Intensive Workloads in Large-Scale Distributed Systems: Trends and Challenges. Modeling and Simulation in HPC and Cloud Systems 2018: 19-43 - 2017
- [j99]Dimitrios Tychalas, Helen D. Karatza
:
High performance system based on Cloud and beyond: Jungle Computing. J. Comput. Sci. 22: 131-147 (2017) - [j98]Ilias Mavridis, Helen D. Karatza
:
Performance evaluation of cloud-based log file analysis with Apache Hadoop and Apache Spark. J. Syst. Softw. 125: 133-151 (2017) - [j97]Georgios L. Stavrinides
, Francisco Rodrigo Duro, Helen D. Karatza
, Francisco Javier García Blas
, Jesús Carretero
:
Different aspects of workflow scheduling in large-scale distributed systems. Simul. Model. Pract. Theory 70: 120-134 (2017) - [j96]Helen D. Karatza:
Smart Cities and Internet of Things. Simul. Model. Pract. Theory 73: 1-2 (2017) - [j95]Joanna Kolodziej, Horacio González-Vélez
, Helen D. Karatza
:
High-performance modelling and simulation for big data applications. Simul. Model. Pract. Theory 76: 1-2 (2017) - [c72]Georgios L. Stavrinides, Helen D. Karatza
:
The impact of data locality on the performance of a SaaS cloud with real-time data-intensive applications. DS-RT 2017: 180-187 - [c71]Georgios L. Stavrinides, Helen D. Karatza
:
The Effect of Workload Computational Demand Variability on the Performance of a SaaS Cloud with a Multi-tier SLA. FiCloud 2017: 10-17 - [c70]Georgios L. Stavrinides, Helen D. Karatza
:
Periodic scheduling of mixed workload in distributed systems. ICE/ITMC 2017: 94-99 - [c69]Ilias Mavridis, Helen D. Karatza
:
Performance and Overhead Study of Containers Running on Top of Virtual Machines. CBI (2) 2017: 32-38 - [c68]Helen D. Karatza:
Energy Efficiency in Large Scale Distributed Systems: The Role of Simulation. ICPE Companion 2017: 37 - [c67]Georgios L. Stavrinides
, Helen D. Karatza
:
Simulation-Based Performance Evaluation of an Energy-Aware Heuristic for the Scheduling of HPC Applications in Large-Scale Distributed Systems. ICPE Companion 2017: 49-54 - 2016
- [j94]George Terzopoulos, Helen D. Karatza
:
Power-aware Bag-of-Tasks scheduling on heterogeneous platforms. Clust. Comput. 19(2): 615-631 (2016) - [j93]Rehab Duwairi, Helen D. Karatza
:
Advances on information and communication systems. Simul. Model. Pract. Theory 64: 1-2 (2016) - [c66]Michele Bombardieri, Salvatore Castanò, Fabrizio Curcio, Angelo Furfaro
, Helen D. Karatza
:
Honeypot-Powered Malware Reverse Engineering. IC2E Workshops 2016: 65-69 - [c65]George Terzopoulos, Helen D. Karatza
:
Bag-of-Tasks Load Balancing on Power-Aware Clusters. PDP 2016: 135-142 - [c64]Georgios L. Stavrinides
, Helen D. Karatza
:
Scheduling real-time parallel applications in SaaS clouds in the presence of transient software failures. SPECTS 2016: 1-8 - 2015
- [j92]Ioannis A. Moschakis, Helen D. Karatza
:
Towards scheduling for Internet-of-Things applications on clouds: a simulated annealing approach. Concurr. Comput. Pract. Exp. 27(8): 1886-1899 (2015) - [j91]Ioannis A. Moschakis, Helen D. Karatza
:
Multi-criteria scheduling of Bag-of-Tasks applications on heterogeneous interlinked clouds with simulated annealing. J. Syst. Softw. 101: 1-14 (2015) - [j90]Helen D. Karatza
:
Guest editor's introduction: Special issue on resource management in mobile clouds. Simul. Model. Pract. Theory 50: 1-2 (2015) - [j89]Ioannis A. Moschakis, Helen D. Karatza
:
A meta-heuristic optimization approach to the scheduling of bag-of-tasks applications on heterogeneous clouds with multi-level arrivals and critical jobs. Simul. Model. Pract. Theory 57: 1-25 (2015) - [j88]Helen D. Karatza
, Jesús Carretero
:
Special issue on "Techniques and applications for sustainable ultrascale computing systems". Simul. Model. Pract. Theory 58: 1-2 (2015) - [j87]Georges Da Costa, Thomas Fahringer
, Juan-Antonio Rico-Gallego
, Ivan Grasso, Atanas Hristov, Helen D. Karatza
, Alexey L. Lastovetsky
, Fabrizio Marozzo, Dana Petcu
, Georgios L. Stavrinides
, Domenico Talia, Paolo Trunfio
, Hrachya V. Astsatryan
:
Exascale Machines Require New Programming Paradigms and Runtimes. Supercomput. Front. Innov. 2(2): 6-27 (2015) - [j86]Michel Bagein, Jorge G. Barbosa, Vicente Blanco Pérez
, Ivona Brandic, Samuel Cremer, Sébastien Fremal, Helen D. Karatza
, Laurent Lefèvre, Toni Mastelic
, Ariel Oleksiak
, Anne-Cécile Orgerie
, Georgios L. Stavrinides
, Sébastien Varrette:
Energy Efficiency for Ultrascale Systems: Challenges and Trends from Nesus Project. Supercomput. Front. Innov. 2(2): 105-131 (2015) - [c63]Zafeirios C. Papazachos, Helen D. Karatza:
Scheduling bags of tasks and gangs in a distributed system. CITS 2015: 1-5 - [c62]Kyriaki Skenteridou, Helen D. Karatza
:
Job scheduling in a grid cluster. CITS 2015: 1-5 - [c61]Stephen S. Yau, Wei-Tek Tsai, Kenji Takahashi, Xiaoying Bai, Helen D. Karatza
:
Message from the IWSC 2015 Workshop Organizers. COMPSAC Workshops 2015: 453 - [c60]Georgios L. Stavrinides
, Helen D. Karatza
:
A Cost-Effective and QoS-Aware Approach to Scheduling Real-Time Workflow Applications in PaaS and SaaS Clouds. FiCloud 2015: 231-239 - [c59]Eleni Karatza:
Cloud Computing - State-of-the-Art and Future Research Trends. ICSOFT-EA 2015: IS-5 - [c58]Dimitris Tychalas, Helen D. Karatza
:
A cloud system for health care. Panhellenic Conference on Informatics 2015: 169-170 - 2014
- [j85]Fotis Loukos
, Helen D. Karatza
, Vana Kalogeraki
:
Real-time data dissemination in mobile peer-to-peer networks. J. Syst. Softw. 90: 179-190 (2014) - [j84]George Terzopoulos, Helen D. Karatza
:
Energy-efficient real-time heterogeneous cluster scheduling with node replacement due to failures. J. Supercomput. 68(2): 867-889 (2014) - [c57]Helen D. Karatza
:
Scheduling jobs with different characteristics in distributed systems. CITS 2014: 1-5 - [c56]George Terzopoulos, Helen D. Karatza
:
Bag-of-Task Scheduling on Power-Aware Clusters Using a DVFS-Based Mechanism. IPDPS Workshops 2014: 833-840 - [c55]Georgios L. Stavrinides
, Helen D. Karatza
:
The impact of resource heterogeneity on the timeliness of hard real-time complex jobs. PETRA 2014: 65:1-65:8 - 2013
- [j83]Constandinos X. Mavromoustakis, Helen D. Karatza
:
Performance Evaluation of Opportunistic Resource-Sharing Scheme Using Socially Oriented Outsourcing in Wireless Devices. Comput. J. 56(2): 184-197 (2013) - [j82]S. R. Chakravarthy, Helen D. Karatza
:
Two-server parallel system with pure space sharing and Markovian arrivals. Comput. Oper. Res. 40(1): 510-519 (2013) - [j81]Helen D. Karatza, Constandinos X. Mavromoustakis:
Special Issue on Simulation-based Performance Evaluation of Infrastructures for the Internet of Things: Connectivity and resource considerations in the mobility Era. Simul. Model. Pract. Theory 34: 157-158 (2013) - [j80]George Terzopoulos, Helen D. Karatza
:
Performance evaluation and energy consumption of a real-time heterogeneous grid system using DVS and DPM. Simul. Model. Pract. Theory 36: 33-43 (2013) - [j79]Helen D. Karatza
:
Special issue on energy efficiency in grids and clouds. Simul. Model. Pract. Theory 39: 1-2 (2013) - [c54]