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HPC4EAS (High Performance Computing for Efficient Applications and Simulation Research Group)

Our main investigation objectives will address the research and technology challenges of meeting the requirements of next generation Cloud Computing architectures for the efficient execution of compute and data-intensive High Performance Computing services. We have defined four strategic research objectives that correspond with the four architectural layers of HPC for Efficient Applications & Simulation (hpc4eas): Performance and Efficiency in the use of HPC resources, User Availability of HPC Resources, Design and Optimization of HPC Systems for Specific "Workloads" (application-specific domains) and Social Projection Applications. The results of the these research lines will offer a considerable improvement in resource utilization, energy efficiency and cost of current scientific and business infrastructures; will support new provisioning models for computing centres to offer on-demand capacity in order to scale user’s environment and accommodate ongoing growth, and will establish the principals of porting HPC applications to clusters and Clouds.
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2025-09-10
07:12
12 p, 3.9 MB Application of a sampling and clustering-based heuristic search algorithm to find an efficient staff configuration in an emergency department / Harita, Maria (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Wong, Álvaro (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Rexachs del Rosario, Dolores Isabel (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Luque, Emilio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Bruballa, Eva (Escola Universitària d'Infermeria i de Fisioteràpia "Gimbernat") ; Epelde, Francisco (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT))
Emergency Departments (EDs) are among the most complex areas in healthcare, requiring immediate medical attention for acute and urgent conditions. Optimizing staff configurations to reduce patient Length of Stay (LoS) and improve operational efficiency poses a significant challenge due to the combinatorial and high-dimensional nature of the problem. [...]
2025 - 10.1016/j.eswa.2025.128803
Expert Systems with Applications, Vol. 295 (2025) , p. 128803  
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2025-07-29
04:46
Modeling Parallel AI Applications for Performance Analysis on Cloud Environments / Albert, Miquel (Escola Universitària d'Informàtica Tomàs Cerdà) ; Wong, Álvaro (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; León, Betzabeth (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Rexachs del Rosario, Dolores Isabel (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Luque, Emilio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
In high-performance computing (HPC) environments, efficient execution of AI applications is critical for optimal performance and resource utilization. In this work, we extend the PAS2P methodology to AI applications through message passing on HPC Cloud systems, defining the AI Application Model to describe their performance behavior. [...]
Springer Cham, 2025 (Lecture Notes in Computer Science; 15906) - 10.1007/978-3-031-97635-3_26
Computational Science - ICCS 2025. 25th International Conference, Singapore, Singapore, July 7-9, 2025, Proceedings, Part IV, 2025, p. 216-224  
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2025-01-16
05:51
11 p, 347.2 KB Optimal Run Length for Discrete-event Distributed Cluster-based Simulations / Borges, Francisco (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Gutierrez-Milla, Albert (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Luque, Emilio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
In scientific simulations the results generated usually come from a stochastic process. New solutions with the aim of improving these simulations have been proposed, but the problem is how to compare these solutions since the results are not deterministic. [...]
2014 - 10.1016/j.procs.2014.05.007
Procedia computer science, Vol. 29 (June 2014) , p. 73-83  
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2025-01-16
05:51
10 p, 523.0 KB Individual-oriented Model Crowd Evacuations Distributed Simulation / Gutierrez-Milla, Albert (Universitat Autònoma de Barcelona) ; Borges, Francisco (Universitat Autònoma de Barcelona) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona) ; Luque, Emilio (Universitat Autònoma de Barcelona)
Emergency plan preparation is an important problem in building design to evacuate people as fast as possible. Simulation exercises as fire drills are not a realistic situation to understand people behaviour. [...]
2014 - 10.1016/j.procs.2014.05.145
Procedia computer science, Vol. 29 (June 2014) , p. 1600-1609  
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2025-01-16
05:51
10 p, 717.7 KB Crowd Evacuations SaaS : An ABM Approach / Gutierrez-Milla, Albert (Universitat Autònoma de Barcelona) ; Borges, Francisco (Universitat Autònoma de Barcelona) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona) ; Luque, Emilio (Universitat Autònoma de Barcelona)
Crowd evacuations involve thousands of persons in closed spaces. Having knowledge about where the problematic exits will be or where the disaster may occur can be crucial in emergency planning. We implemented a simulator using Agent Based Modelling able to model the behaviour of people in evacuation situations and a workflow able to run it in the cloud. [...]
2015 - 10.1016/j.procs.2015.05.271
Procedia computer science, Vol. 51 (June 2015) , p. 473-482  
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2025-01-16
05:51
12 p, 594.2 KB Introducing computational thinking, parallel programming and performance engineering in interdisciplinary studies / César Galobardes, Eduardo (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Cortés Fité, Ana (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Espinosa, Antonio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Margalef, Tomàs (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Moure, Juan C, dir. (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Sikora, Anna (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
Nowadays, many fields of science and engineering are evolving through the joint contribution of complementary fields. Computer science, and especially High Performance Computing, has become a key factor in the development of many research fields, establishing a new paradigm called computational science. [...]
2017 - 10.1016/j.jpdc.2016.12.027
Journal of Parallel and Distributed Computing, Vol. 105 (July 2017) , p. 116-126  
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2025-01-16
05:51
8 p, 1005.9 KB Green High Performance Simulation for AMB models of Aedes aegypti / Montes de Oca, Erica (Universidad Nacional de La Plata) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; De Gisuti, Laura Cristina (Universidad Nacional de La Plata) ; Naiouf, Marcelo (Universidad Nacional de La Plata)
The increase in temperature caused by the climate change has resulted in the rapid dissemination of infectious diseases. Given the alert for the current situation, the World Health Organization (WHO) has declared a state of health emergency, highlighting the severity of the situation in some countries. [...]
2020 - 10.24215/16666038.20.e02
Journal of Computer Science and Technology (Argentina), Vol. 20, Issue 1 (May 2020) , p. 15-22  
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2025-01-16
05:51
16 p, 3.0 MB A Metaheuristic Search Algorithm based on Sampling and Clustering / Harita, Maria (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Wong, Álvaro (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Rexachs del Rosario, Dolores Isabel (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius) ; Luque, Emilio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
As optimization problems become more complicated and extensive, parameterization becomes complex, resulting in a difficult task requiring significant amounts of time and resources. In this paper we propose a heuristic search algorithm we call MCSA (Montecarlo-Clustering Search Algorithm), which is based on Montecarlo sampling, and a clustering strategy involving two techniques. [...]
2024 - 10.1109/access.2024.3354714
IEEE Access, Vol. 12 (January 2024) , p. 15493-15508  
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2025-01-16
05:51
9 p, 536.5 KB Efficiency analysis for AI applications in HPC systems. Cases study : K-Means / Rivas, Jose Maria (Universitat Autònoma de Barcelona) ; Wong, Álvaro (Universitat Autònoma de Barcelona) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona) ; Luque, Emilio (Universitat Autònoma de Barcelona) ; Rexachs del Rosario, Dolores Isabel (Universitat Autònoma de Barcelona)
Currently, many AI applications require large-scale computing and memory to solve problems. The combination of AI applications and HPC sometimes does not efficiently use the available resources. Furthermore, a lot of idle times is caused by communication, resulting in increased runtime. [...]
Cham, Switzerland: Springer, 2023 (Lecture Notes in Computer Science ; 14074) - 10.1007/978-3-031-36021-3_39
Computational Science - ICCS 2023, 2023, p. 373-380  
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2025-01-16
05:51
3 p, 112.9 KB Crowd dynamics modeling and collision avoidance with OpenMP / Gutierrez-Milla, Albert (Universitat Autònoma de Barcelona) ; Borges, Francisco (Universitat Autònoma de Barcelona) ; Suppi Boldrito, Remo (Universitat Autònoma de Barcelona) ; Luque, Emilio (Universitat Autònoma de Barcelona)
This paper deals with the problem of simulating crowd evacuations in multicore architectures. Manage evacuations is an important issue that involves lives, and in the case of crowds, thousands of lives. [...]
IEEE, 2015 - 10.1109/WSC.2015.7408433
2015 Winter Simulation Conference (WSC), 2015, p. 3128-3129  
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