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International Workshop on Hot Topics in Cloud service Scalability (HotTopiCS 2014)

March 22, 2014



A ZIP file with preliminary papers is available for download here.

Programme, 22.3.2014


Session 1 "Scalability of Architectures"

Shigetoshi Yokoyama, Atsushi Matsumoto and Nobukazu Yoshioka   
Network traffic optimization architecture for scalability in academic inter-cloud computing environments

Sebastian Lehrig
Applying Architectural Templates for Design-Time Scalability and Elasticity Analyses of SaaS Applications

Rima Al Ali, Ilias Gerostathopoulos, Inti Gonzalez-Herrera, Adrian Juan-Verdejo, Michal Kit and Bholanathsingh Surajbali
An Architecture-Based Approach for Compute-Intensive Pervasive Systems in Dynamic Environments

Coffee break

Session 2 "Elastic Workload Handling"

Rouven Krebs, Philipp Schneider and Nikolas Herbst
Optimization Method for Request Admission Controll to Guarantee Performance Isolation

Andreas Weber, Nikolas Herbst, Henning Groenda and Samuel Kounev
Towards a Resource Elasticity Benchmark for Cloud Environments

Break-out group discussions
15.15-15.30 Coffee break
15.30-17.00 Collection of results and closing remarks


Software services are becoming more and more important and intertwined with our daily activities. With the growing complexity of software services and their unpredictably increasing workload, the scalability of these services becomes more and more critical. A scalable service’s implementation can sustain increasing work or load by consuming more hardware resources, as well as releasing hardware resources with decreasing work or load, all while fulfilling its SLAs.

The focus of this workshop is on service scalability: the mapping between a service’s work and load and its resulting resource consumption. Even more than performance, scalability is deeply rooted in the service’s architecture and high-level design. In this workshop, we will look at software service scalability from different angles. Scalability is relevant in conventional architectures but even more in cloud computing. Both modelling and analyses of scalability or its related properties like elasticity or efficiency as well as measurements to quantify scalability, elasticity or efficiency are relevant topics for the workshop.

Hot Topics in Cloud services Scalability provides a platform for academics and industrial practitioners to exchange novel research ideas and current problems from practice and to identify new and "hot" topics in the field of software service scalability. As indicated by the co-location with ICPE, we are particularly interested in work tackling performance- or scalability-related problems (understood in a very broad sense), but other work related to the creation and management of scalable service-based cloud applications (e.g., from an economic perspective) are equally welcome.

Core topics of interest include:

  • Scalability, elasticity and efficiency concepts, definitions, metrics and modelling
  • Scalability patterns and anti-patterns
  • Software architectures for scalability
  • Design of scalable services
  • Quantifying and measuring scalability
  • Benchmarking of scalability
  • Scalability requirements engineering
  • SLAs for scalable services
  • Scalability tools
  • Scalability case studies
  • Scalability for big data
  • Scalability for cloud services

Related topics of interest include, especially if there is a clear connection to scalability, elasticity and efficiency (but are not limited to) the following areas:

  • Cloud computing, including economic modelling of them
  • Energy efficient computing
  • Multi-tenancy
  • Workload characterisation and reproducibility
  • Mobile services
  • Autonomic architectures
  • Resource management
  • Virtualisation platforms
  • Storage architectures
  • Network architectures

Submission Format, Publication

Authors are invited to submit original, unpublished papers that are not being considered in another forum. Duplicate submissions will be rejected without review. At least one author of each accepted paper is required to attend the workshop and present the paper. Only the accepted and presented papers will be included in the Workshop Proceedings which will be published by ACM in the ACM Digital Library.

Papers should be up to 8 pages in the standard ACM format for conference proceedings and must be written in English. We explicitly invite work-in-progress papers as well as position or vision papers. Papers can be submitted through EasyChair until the deadline.

Important Dates

  • Submission of abstracts: Febrary 3rd, 2014 Extended to 14th of February
  • Submission of papers: February 10th, 2014 Extended to 21st of February
  • Notification of acceptance: February 28th, 2014 Extended to 9th of March
  • Workshop: March 22, 2014

Programme Committee

  • Luca Berardinelli, University of L'Aquila, Italy
  • Andre Bondi, Siemens Corporate Research, Inc., USA
  • Thomas Bures, Carles University, Prague, Czech Republic
  • Radu Calinescu, University og York, UK
  • Paolo Cremonesi, Politecnico di Milano, Italy
  • Nicolas Ferry, SINTEF ICT Oslo, Norway
  • Lucia Happe, University Karlsruhe, Germany
  • Wilhelm Hasselbring, Kiel University, Germany
  • Darko Huljenic, Ericsson Nikola Tesla d.d., Croatia
  • Heiko Koziolek, ABB Corporate Research, Germany
  • Alexandru Iosup, Delft University of Technology, The Netherlands
  • Raffaela Mirandola, Politecnico di Milano, Italy
  • Ralf Reussner, Karlsruhe Institute of Technology, Germany
  • Arnor Solberg, SINTEF ICT Oslo, Norway
  • Michael Stal, Siemens AG, Germany
  • Alexander Wolf, Imperial College London, UK
  • Murray Woodside, Carleton University, Ottawa, Canada
  • Yagiz Onat Yazir, University of Victoria, Canada

Workshop Co-Organisers

  • Steffen Becker, University of Paderborn, Germany
  • Gunnar Brataas, Sintef Trondheim, Norway
  • Roozbeh Farahbod, SAP, Germany