Open PhD positions available
Doctoral College "Adaptive Distributed Systems"
Talk: Kriging based Self-Adaptive Controllers for the Cloud
Alessio Gambi
Univ. of Lugano, Switzerland, [Homepage]
Date:
Time:
Place:
Thursday, January 12th 2012
14:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor
Abstract:
In the context of Cloud computing, Service Providers (SP) can access resources "on-demand" and dynamically scale their elastic applications; in this way, SPs can reduce the need of system over-sizing and provide guarantees about applications QoS. To properly achieve this, SPs must decide on when, what and how to scale their systems.
Dynamic changes in operating conditions, and the complexity of the relations between system behaviors and system configurations may reduce the effectiveness of statically defined solutions. Model based self-adaptive controllers seem to be more promising solutions as they were originally proposed to deal with complex systems, emerging behaviors, and dynamic environments, and because they can autonomously learn from past experience and adapt to the actual operating conditions.
In this talk, I discuss the design of self-adaptive controllers based on a particular black-box surrogate model, named Kriging model. Kriging models are the mathematical tools that controllers use to capture the relations between the QoS of the virtualized systems, the incoming workload and the system configuration, and to support their planning activities; the models are maintained up-to-date by the controllers during the runtime activities.
Pacific Controls joint Cloud Computing resarch
Info Brochure
from Pacific Controls
Guest lecture: Topology and Orchestration Specification for Cloud Applications (TOSCA)
Universität Stuttgart, Germany
Date:
Time:
Place:
Wednesday, Nov 30th 2011
15:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor
Pacific Controls joint Cloud Computing resarch: Saving Energy with the "Internet of Things"
Pacific Controls and the Vienna University of Technology are developing an "internet of things". Automatic communication between electronic devices and infrastructures can save money and energy.
TU Vienna press release:
german
english
Guest lecture: Cooperative Infrastructure Provisioning in Social Clouds
Christian Haas
Karlsruhe Institute of Technology (KIT), Germany
Date:
Time:
Place:
Wednesday, October 5th 2011
16:00
seminar room Argentinierstrasse
Abstract:
In order to run a platform like a Social Cloud, a certain quantity of resources is necessary to facilitate the platform itself and the services that enable the basic operation of the platform. For example, because users can share and trade resources using different (economic) protocols, the matching of demand to supply results in the calculation of one or more allocations, and requires a form of computational infrastructure to facilitate this.
Hence, this talk discusses how such infrastructure resources can be provided by the users of the Social Cloud itself, rather than from a central entity. An economic co-operative sharing model of users is formulated, where the platform itself and its functionality are provided and owned by the users. In addition, the efficiency and performance of such a model depending on incentive schemes and users' characteristics is studied.
Guest lecture: Consensus in distributed systems
University do Minho, Braga, Portugal
Date:
Time:
Place:
Thursday, April 14th 2011
14:15
EI1, Gusshausstrasse 25
Abstract:
This guest lecture is part of the master level lecture "Advanced Distributed Systems".
It may be of particular interest for PhD students working on distribution aspects, as consensus is *the* fundamental problem of distributed systems and many proofs exists under what conditions consensus can be deterministically solved - and when not (e.g., two army/coordinated attack problem, byzantine generals, muddy children/jealous amazons, etc...).
The lecture will explain the basic problem, sketch the FLP proof idea and motivate the idea of failure detectors.
Talk Invitation: Process Reliability in Service-oriented Architectures
Dr. Stefan Schulte
TU Darmstadt
Date:
Time:
Place:
Friday, April 1st 2011
13:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor
Abstract:
After a brief description of my research background, this talk will focus on my former work on process reliability in Service-oriented Architectures. The creation of business processes by composing loosely coupled services to (complex) workflows is one of the major application scenarios of Service-oriented Computing. As a result of the ongoing success of Web service technologies, services can be purchased from external providers. In a future "Internet of Services", functionally equivalent services which provide different cost and quality levels will be available and can be selected by a service consumer in order to execute the different steps of a workflow. Furthermore, the existence of functionally equivalent services allows replacing a service if it does not meet its guaranteed service levels. In this talk, I will present work originating from the BMBF-funded project SoKNOS (Service-Oriented ArchiteCtures Supporting Networks of Public Security) which addresses the selection of services based on user-defined constraints, the monitoring of the workflow execution, and the re-planning of service-based workflows (if necessary).
DSG establishes joint Cloud Computing research with Pacific Controls
Press Release at CeBIT 2011
Ivona Brandic receives Mia-Award 2011
Jährlich wird der MiA-Award an Frauen mit Migrationshintergrund für hervorragende Leistungen und Erfolge in und für Österreich vergeben. Die diesjährige MiA für Wissenschaft & Forschung erhielt Ivona Brandic für ihre bemerkenswerten wissenschaftlichen Leistungen.
Die Universitätsassistentin stammt ursprünglich aus Bosnien-Herzegowina
und kam aufgrund des Kriegsausbruches mit 15 Jahren nach Österreich.
Ivona Brandic studierte Wirtschaftsinformatik an der TU Wien sowie
Universität Wien und begann ihre wissenschaftliche Karriere am
Institut für Scientific Computing der Universität Wien. Seit 2007 ist
sie am Arbeitsbereich Distributed Systems des Instituts für
Informationssysteme tätig.
Für die MiA wird aus jeweils drei nominierten Kandidatinnen eine Preisträgerin in den folgenden Kategorien ermittelt: Wissenschaft & Forschung, Wirtschaft, Humanitäres & Gesellschaftliches Engagement, Kunst & Kultur, Sport.
Talk invitation: Trading Computing Infrastructure Services
Professor Dr. Jörn ALTMANN
Technology Management, Economics and Policy at the College of Engineering Seoul National University
Date:
Time:
Place:
Monday, 21 February 2011
16:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor
Talk invitation: Audit 4 Adaptive SOAs
Prospects for a Collaboration on Evaluating Adaptive SOAs
Dr. Jan Sudeikat
HAW Hamburg / VSIS group at the University of Hamburg
Date:
Time:
Place:
Tuesday, 15th February 2011
10:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor
Talk invitation: The Challenges and Opportunities of Social Business
Dr. Kamal Bhattacharya
Senior Manager at IBM Research India
Date:
Time:
Place:
Monday, 31 January 2011
11:00
Library, Argentinierstrasse 8 / E184-1, 3rd floor