Corina Stratan

Research

My main research interests are distributed systems (cloud and grid computing, peer-to-peer systems), workflow management, monitoring and services computing.

I am a postdoctoral researcher at the Computer Systems Group at Vrije Universiteit Amsterdam , working with prof. Guillaume Pierre, in the group of prof. Maarten van Steen. Our current project is on scalable hosting of web applications in cloud environments. In 2008 I obtained a Ph.D. in Computer Science from the Politehnica University of Bucharest, Romania, where my advisor was prof. Valentin Cristea; the Ph.D. research was focused on monitoring and performance analysis in large-scale distributed systems. In 2006 and 2007 I worked as a summer intern at the IBM T.J. Watson Research Center, with dr. Liana Fong, on dynamic adaptation of WS-BPEL business processes.

My CV:

Publications

Conference/workshop papers:

• Adam2: Reliable Distribution Estimation in Decentralized Environments - by Jan Sacha, Jeffrey Napper, Corina Stratan and Guillaume Pierre. 30th International Conference on Distributed Computing Systems (ICDCS 2010), Genoe, Italy, June 2010

• Towards a Grid Platform for Scientific Workflows Management - by Alexandru Costan, Corina Stratan and Valentin Cristea. 17th International Conference on Control Systems and Computer Science, Bucharest, Romania, May 2009

• A Performance Study of Grid Worflow Engines - by Corina Stratan, Alexandru Iosup and Dick H.J. Epema. 9th IEEE/ACM International Conference on Grid Computing (Grid 2008), Tsukuba, Japan, October 2008

• Dynamic Support for BPEL Process Instance Adaptation - by Ru Fang, Zhi Le Zou, Corina Stratan, Liana Fong, David Marston, Linh Lam and David Frank. 2008 IEEE International Conference on Services Computing (SCC 2008), Honolulu, Hawaii, USA, July 2008

• Realistic Simulation of Large Scale Distributed Systems Using Monitoring - by Ciprian Dobre, Corina Stratan and Valentin Cristea. 7th International Symposium on Parallel and Distributed Computing (ISPDC 2008), Krakow, Poland, July 2008

• Monitoring and Resource Usage Accounting in the Open Science Grid with the MonALISA Framework - by Corina Stratan, Alexandru Costan and Iosif Legrand. 16th International Conference on Control Systems and Computer Science, Bucharest, Romania, May 2007

• On the Accuracy of Offline Monitoring Information in Grids - by Corina Stratan, Alexandru Iosup and Catalin Cirstoiu. 16th International Conference on Control Systems and Computer Science, Bucharest, Romania, May 2007

• A Decentralized Strategy for Genetic Scheduling in Heterogeneous Environments - by George Iordache, Simona Boboila, Florin Pop, Corina Stratan, Valentin Cristea. International Conference on Grid Computing, High-Performance and Distributed Applications (GADA), Montpellier, France, November 2006

• GridMOSI: Towards Integrated Optimization Solutions for Grid Environments - by Corina Stratan, Mihaela Toarta, Alexandru Costan and Valentin Cristea. 5th RoEduNet International Conference, Sibiu, Romania, June 2006

• Real-time Job Monitoring in Grid Environments Using MonALISA and ApMon - by Iosif Legrand, Corina Stratan, Catalin Cirstoiu, Mihaela Toarta, Costin Grigoras and Adrian Muraru. 15th International Conference on Control Systems and Computer Science, Bucharest, Romania, May 2005

• A Simulation Study for T0/T1 Data Replication and Production Activities - by Iosif C. Legrand, Ciprian Mihai Dobre, Ramiro Voicu, Corina Stratan, Catalin Cirstoiu and Lucian Musat. 15th International Conference on Control Systems and Computer Science, Bucharest, Romania, May 2005

• MONARC Simulation Framework - by Ciprian Dobre and Corina Stratan. RoEduNet International Conference, Timisoara, Romania, May 2004

• A Processes Oriented, Discrete Event Simulation Framework for Modelling and Design of Large Scale Distributed Systems - by Iosif C.Legrand, Harvey B. Newman, Frank van Lingen, Ciprian Dobre , Corina Stratan and Kathryn Paschen. IX International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Tsukuba, Japan, 2003

Journal papers:

• A Decentralized Strtegy for Genetic Scheduling in Heterogeneous Environments - by George Iordache, Simona Boboila, Florin Pop, Corina Stratan and Valentin Cristea. Multiagent and Grid Systems (MAGS) 3(4), 2007

Posters:

• ConPaaS: an Integrated Runtime Environment for Elastic Cloud Applications - by Guillaume Pierre, Ismail El Helw, Corina Stratan, Thilo Kielmann, Thorsten Schuett and Jan Stender. ACM/IFIP/USENIX 12th International Middleware Conference, Lisboa, Portugal, December 2011

• A Platform for Developing and Executing Scientific Workflows in Distributed Environments - by Corina Stratan, Florin Pop and Valentin Cristea. Grace Hopper Celebration of Women in Computing, Keystone Resort, Colorado, USA, October 2008

• Distributed Optimal Genetic algorithm for Grid Applications Scheduling - by Valentin Cristea, Florin Pop and Corina Stratan. EGEE User Forum, Manchester, UK, May 2007

Books:

• Large-Scale Distributed Computing and Applications. Models and Trends. - by Valentin Cristea, Ciprian Dobre, Corina Stratan, Florin Pop and Alexandru Costan (IGI Global, 2010)

• Data Structures and Algorithms - Aplications in C++ using STL - by Valeriu Iorga, Cristian Opincaru, Corina Stratan, Paul Chirita (Polirom Publishing House, Bucharest, 2005) (in Romanian)

• C/C++ Programming Problems - by Valeriu Iorga, Paul Chirita, Corina Stratan, Cristian Opincaru (Niculescu publishing house, Bucharest, 2003) (in Romanian)

Projects

ConPaaS (2010-present):ConPaaS is a Platform-as-aService environment for hosting applications in federated clouds. It targets the most common types of applications deployed in clouds: web applications, data storage services (SQL and NoSQL) and compute-intensive applications (MapReduce and Bags of Tasks). Our group is developing the system for hosting web applications, and our main research goals are automatic scaling and advanced Service Level Agreements.

XtreemOS (2008-2010): XtreemOS was an EU FP7 project aiming to investigate and propose new services that should be added to current operating systems to build grid/cloud infrastructure in a simple way. XtreemOS targets the Linux operating system, extending it with a wide range of grid-related capabilities, like native support for virtual organizations.

MonALISA (2004-2008): MonALISA is a framework for monitoring, controlling and optimization in large scale distributed systems. It provides information regarding all the aspects of distributed systems: system information for computer nodes and clusters, network information (traffic, flows, connectivity, topology) for WAN and LAN, information regarding the performance of applications, jobs or services, and end to end performance measurements. MonALISA is developed in a collaboration between Politehnica University of Bucharest, California Institute of Technology and CERN; it is currently running on more than 200 computing sites around the world. In 2006  MonALISA got the Innovation Award for High-Performance Applications from CENIC (the Corporation for Education Network Initiatives in California).

ServMark (2007-2008): ServMark is an instrument for performance evaluation in Grids, which has been developed starting from other two performance testing tools - DiPerF and GrenchMark. It can be used, among others, for: rapid application and environment benchmarking, functionality testing and system tuning, and building runtime performance databases for Grid schedulers and workflow engines. The ServMark project is jointly developed by people from University of Chicago, Delft University of Technology, University of British Columbia and Politehnica University of Bucharest.

Monarc (2003-2004): MONARC 2 is a simulation framework whose aim is to provide a design and optimization tool for large scale distributed computing systems, with a focus on the LHC experiments at CERN . Its goal is to provide a realistic simulation of distributed computing systems, customized for specific physics data processing, and to offer a flexible and dynamic environment to evaluate the performance of a range of possible data processing architectures. Monarc is developed in a collaboration between Politehnica University of Bucharest, California Institute of Technology and CERN.

The not-related-to-research section

Here is a collection of photos from Romania, the country which I come from: http://www.aboutromania.com/photos.html

I also have a personal web site (which happens to be down from time to time): http://www.corinastratan.net