Conference by Dr. Sandra Mendez (Research Fellow. Leibniz Supercomputing Centre (LRZ), Garching bei München, Germany). Thursday December 17, 2015, 12:00 at Tomàs Diéz Room.
Sandra Mendez is Dr. by the Universitat Autònoma de Barcelona (UAB, Spain) in High Performance Computing with research interests on Parallel I/O of the HPC systems. Since 2013, she is research fellow at the Leibniz Supercomputing Centre (LRZ), Garching bei München, Germany. Her areas of expertise include the performance analysis, optimization and tuning of Parallel I/O for parallel scientific applications. She collaborates with UAB as an external researcher in the field of parallel I/O for HPC applications on Computer Cluster and Cloud environments.
Conference at IBM (New York).
Performance Analysis and Scalability of Parallel Applications
Prof Emilio Luque. Computer Architecture and Operating System Department (CAOS)
HPC for Efficient Applications & Simulation (HPC4EAS). University Autonoma of Barcelona (UAB), Spain
Abstract
Due to the complex interaction between the message-passing applications and the HPC system, many applications may suffer performance inefficiencies when they scale to a large number of processes. This problem is particularly serious when the application is executed many times over a long period of time.
Based on prediction models, such as PAS2P (Parallel Application Signature for Performance Prediction) (**), with the purpose of making an efficient use of the Parallel System resources, we propose the methodology P3S (Prediction of Parallel Program Scalability), which allows us to analyze and predict the strong scalability behavior for message-passing applications on a given system.
The methodology strives to use a bounded analysis time, and a reduced set of resources to predict the application performance and scalability.
The methodology is made up of three stages:
- Characterization step: from the execution of a set of small-scale application signatures, the relevant phases of the parallel application are characterized,
- Modeling the application: the scalable logical trace of the application is constructed from the model of the logical scalability, generated for each representative phase of the application. This trace will be used to predict the logical behavior of the application, as the number of the application processes increases.
- Predicting the application performance for a specific number of processes
The output of the P3S methodology will be the predicted curve of application speedup.
Based on this information and with the aim of use the system resources efficiently, the users can select the most appropriate resources to execute the application on the target system. We executed from 16 to 256 processors and predicted the computation time up until 4,096 processors. For the tested applications, we obtained an error of less than 9% for the application speedup.
(**) A. Wong, D. Rexachs, E. Luque: “Parallel Application Signature for Performance Analysis and Prediction”. IEEE Trans. Parallel Distrib. Syst. 26(7): 2009-2019 (2015)
Ph.D Dissertation: Adriana Gaudiani and Javier Panadero.
Phd Thesis defensed in September:
- Adriana Gaudiani. Simulación y Optimización como Metodología para Mejorar la Calidad de la Predicción en un Entorno de Simulación Hidrográfica. September 11, 2015, 12:00am. Room 2. 2nd floor. Faculty of Computer Science. Universidad Nacional de La Plata. Argentina.
- Javier Panadero: Performane Prediction: analysis of the scalability of parallel applications. September 28, 2015, 12:00am. Auditorium of Engineering School. UAB. Campus Bellaterra. Spain.
Congratulations!!
HPC4EAS members WIN the Parallel Programming Contest at the SARTECO MultiConference in XXVI Conference on Parallelism (September 23-25) – Córdoba, Spain.
Zhengchun Liu and Qi Liu Winners of V Contest on Parallel Programming!
The Parallel Programming Contest V was held on September 23, 2015 as part of the XXVI Conference on Parallelism in Córdoba (spain). Liu & Qi won the First Prize of the competition. In addition, a new record has been reached on the Cuda problem (B) !!
CONGRATULATIONS!!
In addition, members of HPC4EAS presented the work-in-progress & relevant research topics of the group in order to share experiences and research advances in the area of High Performance Computing. The works presented are:
- Configuring Fault Tolerance with Coordinated Checkpoint/Restart. Jorge Villamayor et al.
- Generating Simulated Data through HPC for Decision Making in a Hospital Emergency Department. Eva Bruballa et al.
- MPI Communications Management in Cloud. Laura Espínola et al.
New postgraduate courses at Faculty of Computer Science, Universidad Nacional de La Plata and at Faculty of Computer Science, Universidad Nacional del Comahue, Neuquén, Argentina.
In the context of the PhD Program and Master Program on High Performance Computing (within the collaboration agreement UAB-UNLP) have been held at Faculty of Computer Science, Universidad Nacional de La Plata (La Plata, Argentina) the following courses:
- Methodology of Research. Prof. Emilio Luque, Prof. Dolores Rexachs. September 7-12, 2015.
- High Performance ComputingResource Management. Prof. Remo Suppi. September 7-12, 2015.
- Management and Prediction of Power Consumption on High Performance Computing. Prof. Javier Balladini (External Researcher of HPC4EA). September 7-12, 2015.
- Performance prediction and efficient execution of parallel computing systems (HPC): cluster and cloud. Prof. Emilio Luque, Prof. Dolores Rexachs. September 14-18, 2015.
- Resource management in High Performance Computing (Clusters and Cloud). Prof. Remo Suppi. September 14-18, 2015.
Keynote Speaker by Prof. Luque. Information Technologies in Environmental Engineering (ITEE2015). Port Elizabeth. South Africa. 14-16 July 2015.
Keynote speaker of the conference ITEE 2015: Prof Emilio Luque. Title: “Modelling, Simulation, Prediction and Computation”.
Prof. Luque will discuss about the role will be of computation (HPC) to improve the quality of the results of simulation when computation is used to provide the best possible value for the models’ parameters and also the introduction to the limitations of models and how the computation could overcome this limitation. [+info]
New course by Dr. Luque & Dr. Rexachs at Universidad Nacional de La Plata, Argentina. Facultad de Informática.
From June 29 to July 3, 2015. 9:00 to 13:00 pm. (+info)
Open Conference by Dr. Luque at Universidad Nacional de Tierra del Fuego, Argentina. June 26, 26, 15:00. Address: Yrigoyen 879, Room C3. (+info)
Course at Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur, Argentina, by Professor Luque & Professor Rexachs from HPC4EAS. June 25-26, 2015.
Advanced students and graduates on Computer Systems participate in a seminar held in UNTDF by doctors Emilio Luque and Dolores Rexachs from UAB.
The course will focus on issues related to Cloud Computing and Big Data and optimization of computational methods and their application in simulation experimentss.
Conference at Col·legi de Periodistes de Catalunya (Rambla de Catalunya 10, Barcelona, June 18, 19:00) by Dr. R. Suppi i Ms. C. Serrano.
The twenty-first century is a time full of changes and opportunities with respect to technology evolution, a situation which in turn leads us to a series of new challenges, problems and difficult situations.
To address this, the debate will deal with privacy and Internet security, identity theft, also speak the Data Protection Act and the right to oblivion and new frontiers of data privacity.
Speakers:
- Cristina Serrano, Professor at Escola de Prevenció i Seguretat Integral (EPSI) of UAB Foundation. de la Fundació UAB. Lawyer at NEOLEGIS Abogados y Consultores.
- Remo Suppi, Professor of Computer Architecture & Operating Systems Departament at UAB and member of HPC4EAS.
Organized by Amics de la UAB
HPC4EAS member participation at the ICCS 2015 – Reykjavík, Iceland (1-3 june).
The International Conference on Computational Science is an annual conference that brings together researchers and scientists from mathematics and computer science as basic computing disciplines, researchers from various application areas who are pioneering computational methods in sciences to discuss problems and solutions in the area, to identify new issues, and to shape future directions for research.
HPC4EAS Group members wil present the papers (published in Elsevier Procedia Open Access):
- Agent Based Model and Simulation of MRSA Transmission in Emergency Departments Cecilia Jaramillo, Manel Taboada, Francisco Epelde, Dolores Rexachs, Emilio Luque.
- Crowd Evacuations SaaS: An ABM Approach Albert Gutierrez-Milla , Francisco Borges , Remo Suppi , Emilio Luque.
- Quantitative Evaluation of Decision Effects in the Management of Emergency Department Problems Zhengchun Liua, , Eduardo Cabrera, , Manel Taboada, Francisco Epelde, , Dolores Rexachs, Emilio Luque.
- Strip Partitioning for Ant Colony Parallel and Distributed Discrete-event Simulation Francisco Borges , Albert Gutierrez-Milla , Remo Suppi , Emilio Luque.
Lecture by Dr. Luque in the framework of the SEPAR 2015
The BIG DATA and Health, a technology growth: the future of Health session under the 48th SEPAR 2015 analyzes the process of change experienced by the world of medicine with the development and use of large databases online .
This interesting phenomenon was analyzed by Dr. Luque from the point of view Simulation and big data “searching for the efficiency of the system and also The incursion of social networks in large databases with applications health a reality or a fiction? by Dr. Julio Mayol Martinez, Director of Innovation of Hospital San Carlos; and The democratization of health care: from the Evidence-based Medicine to Generating Medical Evidence by Dr. Ignacio Hernandez Medrano, Executive Director of the Ramón y Cajal Health Research Institute, Madrid.
Two Call for Grants applications for trainne research staff at HPC4EAS-UAB, 2015-2016 Academic year.
Call for Ph.D. positions at HPC4EAS of Computer Architecture and Operating Systems Department is now open.
Profile:
- Security in Distributed Systems
- Performance prediction for parallel aplications in High Performance Computing (HPC)
General bases of the call can be found at:
Deadline for documentation delivery: 12th of June 2015. Documentation must be sent to: d.arquitectura.computadors@uab.cat (Please indicate to which profile you are applying).
Dr. Suppi taught together with Professor Serrano a conference on security and privacy. May 15, 2015. Library of Rubí, 19:00 hrs. Barcelona.
This century is a time full of changes and opportunities with respect to technology evolution. This evolution involves a series of challenges, problems and difficult situations. To address this, the debate will deal with privacy and Internet security, identity theft, Data Protection Act and the right to oblivion and new frontiers derived of the use of Big Data.
Professor Suppi and professor Serrano presents the most important aspects to take into account and basic recommendation for the users about these subjects.
More information Amics de la UAB & UAB.
