Heterogeneity is emerging as one of the main characteristics of today’s and future HPC environments where different node organizations, memory hierarchies, and kinds of exotic accelerators are increasingly present. It pervades the entire spectrum of Computing Continuum, ranging from large Cloud infrastructures and Datacenter up to the Internet of Things and Edge Computing environments, aimed at making available in a transparent and friendly way the multitude of low-power and heterogeneous HPC resources available everywhere around us. In this context, for Computational Science and Machine Learning, it is essential to leverage efficient and highly scalable libraries and tools capable of exploiting such modern heterogeneous computers. These systems are typically characterized by very different software environments, which require a new level of flexibility in the algorithms and methods used to achieve an adequate level of performance, with growing attention to energy consumption. This conference Special Session aims to provide a forum for researchers and practitioners to discuss recent advances in parallel methods and algorithms and their implementations on current and future heterogeneous HPC architectures. We solicit research works that address algorithmic design, implementation techniques, performance analysis, integration of parallel numerical methods in science and engineering applications, energy-aware techniques, and theoretical models that efficiently solve problems on heterogeneous platforms.

We focus on papers covering various topics of interest that include, but are not limited to, the following:

• Marco Lapegna (University of Naples “Federico II”), marco.lapegna@unina.it
• Salvatore Cuomo (University of Naples “Federico II”), salvatore.cuomo@unina.it
• Francesco Piccialli (University of Naples “Federico II”), francesco.piccialli@unina.it

Programme Committee:

Cloud Computing covers a broad range of distributed computing principles from infrastructure (e.g distributed storage, reconfigurable networks) to new programming platforms (e.g MS Azure, Google Appe Engine), and internet-based applications. Particularly, Infrastructure as a Service (IaaS) Cloud systems allow the dynamic creation, destruction and management of virtual machines (VMs) as part of virtual computing infrastructures. IaaS Clouds provide a high-level of abstraction to the end user, one that allows the creation of on-demand services through a pay as you go infrastructure combined with elasticity. The increasingly large range of choices and availability of IaaS toolkits has also allowed creation of cloud solutions and frameworks even suitable for private deployment and practical IaaS use on smaller scales.

This special session on Cloud Computing is intended to be a forum for the exchange of ideas and experiences on the use of Cloud Computing technologies and applications with compute and data intensive workloads. The special session also aims at presenting the challenges and opportunities offered by the development of open-source Cloud Computing solutions, as well as case studies in applications of Cloud Computing.

Authors are invited to submit original and unpublished research in the areas of Cloud Computing, Fog/Edge, Serverless and Distributed Computing. With the rapid evolution of newly emerging technologies, this session also aims to provide a forum for novel methods and case studies on the integrated use of clouds, fogs, Internet of Things (IoT) and Blockchain systems. The general venue will be a good occasion to share, learn, and discuss the latest results in these research fields. The special session program will include presentations of peer-reviewed papers.

Topics of interest include, but are not limited to:

Chairs:

• Gabor Kecskemeti (University of Miskolc), g.kecskemeti@ljmu.ac.uk
• Attila Kertesz (University of Szeged), keratt@inf.u-szeged.hu
  

Programme Committee:

Recently, we are witnessing the growth of Internet-connected devices processing at an incredible pace. Devices that need to be “always-on” for accessing data and services through the network. This massive set of devices generates a lot of pressure on the computing infrastructure that is called to serve their requests. This is particularly critical when focusing on the so-called next-generation applications (NextGen), i.e., those applications characterized by stringent requirements in terms of latency, data, privacy, and network bandwidth. Such a “pressure” stimulates the evolution of classical Cloud computing platforms towards a large-scale distributed computing infrastructure of heterogeneous devices, forming a continuum from the Cloud to the Edge of the network.

This complex environment is determining a paradigm switch in the organization of computing infrastructures, moving from “mostly-centralized” to “mostly-decentralized” installments. Rather than relying on a traditional data center compute model, the notion of a compute continuum is gaining momentum, exploiting the right computational resources at optimal processing points in the system.

In the traditional cloud model, enterprise data is directed straight to the cloud for processing, where most of the heavy compute intelligence is located. But, in the transformative data-driven era we live in, this is increasingly not a viable long-term economic model due to the volume of data and a new emphasis on security, safety, privacy, latency, and reliability.

Today, data insights drive near real-time decisions directly affecting the operation of factories, cities, transportation, buildings, and homes. To cope, computing must be fast, efficient, and secure, which generally means putting more compute firepower closer to the data source. It builds the case for more on-device endpoint computing, more localized computing with a new breed of network and private edge servers, and sensible choices over which workloads need to remain in cloud data centers.

The cradle of this special session has been the focus group on the compute continuum that is part of the Italian National Laboratory on “High-Performance Computing: Key Technologies and Tools”, from which this initiative stems. Starting there, the special session aims to bring together experts from academia and industry to identify new challenges for the management of resources in cloud-edge infrastructures and promote this vision to academia and industry stakeholders.

Topics of interest include, but are not limited to:

• (near-) real-time service management across the compute continuum application models for next-generation continuum-based applications
• continuum services allocation and orchestration
• trusted and federated Cloud-Fog-Edge-IoT infrastructures
• efficient data management and interoperable systems in the compute continuum
• Mobile Edge Computing
• Machine Learning for energy saving, scalability and performance improvements targeting the compute continuum
• efficient simulation of large-scale compute continuum systems
• domain-specific semantics and languages for the Compute Continuum

Chairs:

• Raffaele Montella (University of Napoli “Parthenope”), raffaele.montella@uniparthenope.it
• Maria Fazio (University of Messina), maria.fazio@unime.it
• Patrizio Dazzi (University of Pisa), patrizio.dazzi@unipi.it
• Marco Danelutto (University of Pisa), marco.danelutto@unipi.it

Programme Committee:

• Marco Aldinucci (University of Turin), marco.aldinucci@unito.it
• Jörn Altmann (Seoul National University), jorn.altmann@acm.org
• Valeria Cardellini (University of Rome Tor Vergata), cardellini@ing.uniroma2.it
• Emanuele Carlini (ISTI-CNR), emanuele.carlini@isti.cnr.it
• Diana Di Luccio (University of  Napoli “Parthenope”), diana.diluccio@uniparthenope.it
• Beniamino Di Martino (University of Campania), beniamino.dimartino@unicampania.it
• Karim Djemame (University of Leeds), k.djemame@leeds.ac.uk
• Valeria Lukaj (University of Messina), valeria.lukaj@unime.it
• Francesco Martella (University of Messina), fmartella@unime.it
• Matteo Mordacchini (IIT-CNR), matteo.mordacchini@iit.cnr.it
• Marcelo Pasin (University of Neuchâtel), marcelo.pasin@unine.it
• Luiz Angelo Steffenel (Université de Reims Champagne-Ardenne), luiz-angelo.steffenel@univ-reims.fr
• Domenico Talia (University of Calabria), talia@dimes.unical.it
• Massimo Torquati (University of Pisa), torquati@di.unipi.it
• Konstantinos Tserpes (Harokopio University of Athens), tserpes@hua.gr
• José Luis Vázquez-Poletti (Universidad Complutense de Madrid), jlvazquez@fdi.ucm.es
• John Violos (National Technical University of Athens), violos@mail.ntua.gr
• Antonio Virdis (University of Pisa), antonio.virdis@unipi.it

Abstract
The global information technology ecosystem is currently in transition to a new generation of applications, which require intensive systems of acquisition, processing, and data storage, both at the sensor and the computer level. The new scientific applications, more complex, and the increasing availability of data generated by high resolution scientific instruments in domains as diverse as climate, energy, biomedicine, etc., require the synergies between high performance computing (HPC) and large-scale data analysis (Big Data). Today, the HPC world demands Big Data world techniques, while intensive data analysis requires HPC solutions. However, the tools and cultures of HPC and Big Data have diverged because HPC has traditionally focused on strongly coupled intensive computing problems, while Big Data has been geared towards data analysis in highly scalable applications.

The overall goal of this workshop is to create a scientific discussion forum to exchange techniques and experiences to improve the integration of the HPC and Big Data paradigms, providing a convenient way to create software and adapt existing hardware and software intensive in computing and data on an HPC platform.  Thus, this workshop aims at bringing together developers of IoT/edge/Fog/HPC applications with researchers in the field of distributed IT systems. It addresses researchers who are already employing distributed infrastructure techniques in IoT applications, as well as computer scientists working on the field of distributed systems interested in bringing new developments into the Big Data convergence area. 

The workshop will provide the opportunity to assess technology roadmaps to support IoT data collection, Data Analytics, and HPC at scale, and to share users’ experiences.

A sample of the interest of our proposal is the existence in Europe of a working group for the convergence between HPC and Big Data supported by ETP4HPC and BDVA, led by Prof. María S. Pérez and with the cooperation of several research groups in this proposal. In addition, Prof. Jesús Carretero collaborates in the preparation of the strategic research agenda of the European platform ETP4HPC in the line of data-intensive applications and Dr. Rafael Mayo-García coordinates the European Energy Research Alliance (EERA) transversal Joint Programme ‘Digitalisation for energy’ where convergence research on HPC and Data Science is developed.

Target audience – why and to whom the workshop is of interest

The workshop addresses an audience with two profiles.

On the one hand, it attracts researchers who are already employing distributed infrastructure techniques to implement IoT/edge/Fog/Cloud/HPC solutions, in particular scientists who are developing data- and compute-intensive Big Data applications that include IoT data, large-scale IoT networks, and deployments, or complex analysis and machine learning pipelines to exploit the data. On the other hand, it attracts computer scientists working in the field of distributed systems interested in bringing new developments into the convergence of Big Data and HPC solutions. 

Topics of interests

Contributions are expected but not restricted to the following topics:

• Design of architectural frameworks for the integration of HPC and Big Data environments.
• High Performance Computing Platform for Big Data
• Architecture modeling and simulation methodologies.
• Processor, memory, and storage systems architecture.
• Architecture for emerging technologies including machine learning.
• IoT/mobile/embedded architecture
• Exploitation of parallelism at the node level and accelerators.
• Management and capture of massive data integrating large scale heterogeneous systems and computation in the sensors.
• Development of global energy efficiency mechanisms at the local and global levels.
• Energy efficient computing for Big Data
• Use cases for capturing and modeling sensor data and for processing massive IoT data.
• Applications in the IoT/Edge/fog ecosystem.
• Data-driven workflows

Organization 

Workshop Chairs

Katzalin Olcoz (Universidad Complutense de Madrid), katzalin@ucm.es

Katzalin Olcoz is an Associate Professor in the Department of Computer Architecture and System Engineering of the Complutense University of Madrid (Spain) since 2000. Within the computer architecture group of the Complutense University, she has been involved in several projects in the field of computer architecture and design automation from high-level specifications, since 1992. Her current research interests focus on high performance computing, heterogeneous computing, energy efficiency and virtualization. She is Associate Editor of IEEE Trans. on CAD and IEEE Trans. on Emerging Topics in Computing. She has been in the Program Committee of several international conferences such as ICS, PDP, ICCAD, VLSID and ISLPED. 

Jesus Carretero (University Carlos III of Madrid), jesus.carretero@uc3m.es

Jesus Carretero is a Full Professor of Computer Architecture and Technology at Universidad Carlos III de Madrid (Spain), since 2002.  His research activity is centered on high-performance computing systems, large-scale distributed systems and real-time systems applied to data management with application to biomedicine, image processing and COVID-19 pandemic simulation. He is currently involved in coordinating the EuroHPOC project ADMIRE. He was Action Chair of the IC1305 COST Action “Network for Sustainable Ultrascale Computing Systems (NESUS)”. He organized CCGRID 2017 in Madrid and has been General chair of HPCC 2011, MUE 2012, ISPA 2016. Currently he is applications track vice-chair in Supercomputing conference.  Prof. Carretero is a senior member of the IEEE Computer Society.

Program Committee

• María de los Santos Pérez (Universidad Politécnica de Madrid), maria.s.perez@upm.es
• Rafael Mayo-García (CIEMAT), rafael.mayo@ciemat.es
• Javier Garcia Blas (University Carlos III of Madrid), fjblas@inf.uc3m.es
• Felix García Carballeira (University Carlos III of Madrid), felix.garcia@ uc3m.es
• Manuel Prieto-Matias (Universidad Complutense de Madrid), mpmatias@ucm.es

Workshop format

We aim at a half-day workshop. 

We plan a combination of oral presentations, short talks about related topics from the main PDP conference, and a closing panel discussion.

We plan to host about 6 talks oral presentations, 20 minutes per talk, and 10 minutes for questions and discussion. Talks selection will be based on the interest of the talk and the relation with the workshop.

In addition to the selected talks, the workshop will also feature a keynote and invited short talks from the main PDP track with the goal of extending the scope of our workshop. 

A final panel discussion will summarize the workshop and propose joint next steps to progress in Big Data–HPC convergence research in Supercomputers and large-scale distributed IT systems.

Attendance estimated is between 10 and 20 participants. 

Publicity Plan

The website will be hosted by the CABAHLA-CM project website (cabahla.org). 

The workshop will be advertised in an open call within the diverse networks of the workshop chairs and program committee, including local and international community networks. Advertisement includes announcements on the community’s, institution’s, personal websites, and email lists. 

Background

This workshop proposal is a result of the work made at the CABAHLA-CM project (cabahla.org), a successful project that brings together four research groups, with vast experience in HPC and data-intensive systems, which has a strong national and international presence.  

This Project has been funded by the Comunidad de Madrid (Madrid Regional government) under the grant (S2018/TCS4423).

The current static usage model of HPC systems is becoming increasingly inefficient. This is driven by the continuously growing complexity and heterogeneity of system architectures, in combination with the increased usage of coupled applications, the need for strong scaling with extreme scale parallelism, and the increasing reliance on complex and dynamic workflows. As a consequence, we see a rise in research on malleable systems, middleware software and applications, which can adjust resource usage dynamically in order to extract a maximum of efficiency. 

Malleability allows systems to dynamically adjust the computation and storage needs of applications, on the one side, and the global system on the other. Such malleable systems, however, face a series of fundamental research challenges, including: who initiates changes in resource availability or usage? How is it communicated? How to compute the optimal usage? How can applications cope with dynamically changing resources? What should malleable programming models and abstractions look like? How to design resource management frameworks for malleable systems? What should be the API for applications? 

This tutorial will provide an in-depth presentation of emerging software designs to achieve malleability in high-performance computing, high-level parallel programming models, and programmability techniques to improve applications’ malleability. The main part of the tutorial will be devoted to showing and demonstrating FlexMPI, a framework for HPC malleability, and Limitless, an HPC monitoring system to get information from applications and systems and the usage of AI and ML techniques to steer malleability in systems and applications. Finally, we will show how to apply the solutions presented to two use cases: Wacom++ and Nek5000. 

Outline

1. System and system architecture considerations in designing malleable architectures.

2. Emerging software designs to achieve malleability in high-performance computing.

3. High-level parallel programming models and programmability techniques to improve applications’ malleability.

4.- FlexMPI framework for HPC malleability.

5. Limitless: Getting information from applications and systems.

6. Use of AI and ML techniques to steer malleability in systems and applications.

7. Experiences and use cases applying malleability to HPC applications: Wacom++ and Nek5000

 Materials 

• FlexMPI platform. https://gitlab.arcos.inf.uc3m.es/desingh/FlexMPI
• LIMITLESS monitoring tool. https://www.arcos.inf.uc3m.es/limitless/ 

Length 

3 hours 

Target audience 

• Programmers of HPC applications 
• HPC system administrators 
• Researchers on HPC optimization 
• Students interested in parallel and distributed programming 

Presenters:

• Jesús Carretero (Universidad Carlos III de Madrid), jesus.carretero@uc3m.es 
• Alberto Cascajo (Universidad Carlos III de Madrid), alberto.cascajo@uc3m.es
• David Expósito-Singh (Universidad Carlos III de Madrid), david.exposito@uc3m.es 
• Raffaele Montella (University of Napoli “Parthenope”), raffaele.montella@uniparthenope.it

Jesus Carretero is a Full Professor of Computer Architecture and Technology at Universidad Carlos III de Madrid (Spain), where he is responsible for that knowledge area since 2000 and leader of the Computer Architecture Research Group (ARCOS). He got a PhD in Informatics by Universidad Politécnica de Madrid in 1995. He also serves as Coordinator of the Informatics area for Agencia Española de Investigación since 2020. His research activity is centered on high-performance computing systems, large-scale distributed systems, data-intensive computing, IoT and real-time systems. He is currently coordinating the EuroHPC project ADMIRE, “Adaptive multi-tier intelligent data manager for Exascale”, aiming towards ad-hoc malleable storage systems. He was also Action Chair of the IC1305 COST Action “Network for Sustainable Ultrascale Computing Systems (NESUS)”. He has also participated in the H2020 ASPIDE project and in the FP7 program REPARA. He has participated and leaded several national and international research projects in these areas, founded by Madrid Regional Government, Spanish Education Ministry, and the European Union. He is associated editor of TPDS, ACM CS, and FGCS journals. He has been General chair of CCGRID 2017, 

IC3PP2016, or HPCC 2011, and Program Chair of ISPA 2012, EuroMPI 2013, C4Bio 2014, and ESAA 2014, and Applications track vice-chair of SC22. 

• Iacopo Colonnelli (University of Torino), iacopo.colonnelli@unito.it
• Antonella Galizia (IMATI-CNR), antonella.galizia@ge.imati.cnr.it
• Christian Engelmann (Oak Ridge National Laboratory), engelmannc@ornl.gov
• Christoph Kessler (Linköping University), christoph.kessler@liu.se
• Dalvan Griebler (PUCRS/SETREM), dalvangriebler@gmail.com
• Damian Dechev (University of Central Florida), dechev@cs.ucf.edu
• Daniele D’Agostino (CNR-IMATI), daniele.dagostino@cnr.it
• Daniele De Sensi (ETH Zürich), desensi@di.uniroma1.it
• Daniele Tessera (Università Cattolica del Sacro Cuore), daniele.tessera@unicatt.it
• Dante Domizzi Sanchez Gallegos (CINVESTAV– Tamaulipas), ddomizzisag@gmail.com
• David E. Singh (Universidad Carlos III de Madrid), dexposit@inf.uc3m.es
• Fabrizio Marozzo (DIMES, University of Calabria), fmarozzo@dimes.unical.it
• Felix Garcia-Carballeira (University Carlos III of Madrid), felix.garcia@uc3m.es
• Fernando Castro (Universidad Complutense de Madrid), fcastror@fis.ucm.es
• Francesco Leporati (University of Pavia), francesco.leporati@unipv.it
• Gabriele Jost (NASA Ames Research Center/CSRA), gabriele.jost@nasa.gov
• Gabriele Mencagli (University of Pisa), gabriele.mencagli@unipi.it
• Giulio Giunta (University of Naples “Parthenope”), giulio.giunta@uniparthenope.it
• Håkan Grahn (Blekinge Institute of Technology), hakan.grahn@bth.se
• Hideharu Amano (Keio University), hunga@am.ics.keio.ac.jp
• Horacio Gonzalez-Velez (National College of Ireland), horacio.gonzalez-velez@ncirl.ie
• Javier Cuenca (University of Murcia), jcuenca@um.es
• Jing Gong (Uppsala University), jing.gong@it.uu.se
• Jin Park (California State University, Fresno), jpark@csufresno.edu
• José M. Cecilia (Universitat Politècnica de València), jmcecilia@disca.upv.es
• Juan Carlos Saez Alcaide (Universidad Complutense de Madrid), jcsaezal@fdi.ucm.es
• Katzalin Olcoz (Universidad Complutense de Madrid), katzalin@dacya.ucm.es
• Kostis Sagonas (Uppsala University), konstantinos.sagonas@it.uu.se
• Iacopo Colonnelli (Università di Torino), iacopo.colonnelli@unito.it
• Leonel Sousa (Universidade de Lisboa), las@inesc-id.pt
• Luisa Massari (University of Pavia), luisa.massari@unipv.it
• Manuel F. Dolz (Univeristat Jaume I), dolzm@uji.es
• Marco Aldinucci (University of Torino), marco.aldinucci@unito.it
• Maria Fazio (University of Messina), mfazio@unime.it
• Massimo Canonico (University of Piemonte Orientale), massimo.canonico@uniupo.it
• Mats Brorsson (University of Luxembourg), mats.brorsson@uni.lu
  
• Miaoqing Huang (University of Arkansas), mqhuang@uark.edu
• Mihail Popov (INRIA), mihail.popov@inria.fr
• Pasqua D’Ambra (IAC-CNR), pasqua.dambra@na.icar.cnr.it
• Radu Prodan (University of Klagenfurt), radu.prodan@itec.aau.at
• Stefano Markidis (KTH Royal Institute of Technology), markidis@kth.se
• Tomas Nordström (Umeå University), tomas.nordstrom@umu.se
• Volodymyr Turchenko (Nuralogix Corporation), vladturchenko@nuralogix.ai
• William Spataro (University of Calabria), spataro@unical.it