TU Delft
 
Alexandru IOSUP
Research (Projects, Publications, Talks)
Parallel and Distributed Systems
EWI PDS A.IosupResearch
 
 
 
 
 
 
 
 
 

 
 
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Blbiography of A. Iosup at DBLP DBLP A. Iosup Bibliography Bibliography of A. Iosup at DBLP CCBS A. Iosup Bibliography Alexandru Iosup's profile at Mendeley Alexandru Iosup's profile at ResearchGate Alexandru Iosup's profile at Academia.edu

Main interests
research and related areas I would like to explore
Gaming research, with a focus on massively social gaming.
Cloud Computing research, with a focus on performance and on resource management.
Grid Computing research, with a focus on performance and on resource management..
Peer-to-Peer Computing research, with a focus on performance and on working systems.
Research in parallel and distributed systems.
Modern ways of teaching in Computer Science


Research projects
research projects, sorted by topic
Large-Scale Distributed Systems
 
The Failure Trace Archive ALEAE
2009-present
click to toggle project information display
large scale, distributed computing, fault tolerance, failure trace archive
FTA logo
ALEAE
with Derrick Kondo, Bahman Javadi, Dick Epema, and the rest of the ALEAE team.
The Failure Trace Archive (FTA) is centralized public repository of availability traces of parallel and distributed systems, and tools for their analysis. The purpose of this archive is to facilitate the design, validation, and comparison of fault-tolerant models and algorithms.
keywords failures, traces, archive.
features
availability traces of parallel and distributed systems, differing in scale, volatility, and usage;
a standard format for failure traces
scripts and tools for analyzing these traces
Note: you can learn more about the FTA from this article accepted in CCGrid'10.
 
web site
Grid computing
 
The Grid Workloads Archive VL-e, CoreGRID
2006-present
click to toggle project information display click to see a multi-page project summary
grid computing, grid workloads, grid traces, workloads archive
The Grid Workloads Archive web site

VL-e logo Virtual Laboratory for e-Science | CoreGRID logo CoreGRID European Research Network
with Mathieu Jan, Hui Li, Lex Wolters, Catalin Dumitrescu, Shanny Anoep, Dick Epema
keywords grid performance evaluation, real traces, grid workloads.
features
archive of grid workloads;
a multi-page project summary click to see a multi-page project summary  
web site
 
GrenchMark VL-e, CoreGRID
2005-present
click to toggle project information display
grid computing, performance evaluation, testing, workload-generation
The GrenchMark web site

VL-e logo Virtual Laboratory for e-Science | CoreGRID logo CoreGRID European Research Network
with Hashim Mohamed, Dick Epema
keywords grid performance evaluation, synthetic workloads, real traces.
features
flexible and extensible framework for generating synthetic grid workloads;
easy to use and portable tool for generating, running, and analyzing the results of synthetic grid workloads;
over 35 real and synthetic grid applications;
 
web site
 
The Delft Grid Simulator VL-e
2006-present
click to toggle project information display click to see a multi-page project summary
grid computing, simulation, performance evaluation, multi-grids, grid traces
VL-e logo Virtual Laboratory for e-Science
with Ozan Sonmez, Shanny Anoep, Dick Epema
keywords grid computing, simulation, performance evaluation, multi-grids, grid traces.
features
simulator of multi-grid environments;
a multi-page project summary click to see a multi-page project summary  
web site
 
Koala VL-e, CoreGRID
2004-present
click to toggle project information display
grid computing, scheduling
The Koala Grid Scheduler web site
Koala
 
VL-e logo Virtual Laboratory for e-Science
with Hashim Mohamed, Wouter Lammers, Ozan Sonmez, Dick Epema
keywords grid scheduling, co-allocation.
features
coallocating scheduler;
MPI support (with Globus DUROC);
Java and Ibis support;
 
web site
 
Grid for process control ACI GRID
2004-2005 (finished)
click to toggle project information display
grid computing, robotic application, control process, mobile robot, robot localization, image processing
 
ACI GRID logo ACI GRID | Supelec, Metz logo ERSIDP / Supelec, Metz | Salerno logo University of Salerno
with Stephane Vialle (Supelec Metz, FR), Amelia De Vivo (Salerno University, IT), Yannick Boye (Supelec Metz), Fabrice Sabatier (CNAM-Lorraine)
keywords grid applications with soft time constraints, robot control.
 
web site
Peer-2-Peer Systems
 
2Fast/Tribler I-Share
2005-present
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peer-to-peer, file-sharing, collaborative download, cooperative download, fairness, protocol
 
Tribler logo
I-SHARE logo I-SHARE
with Pawel Garbacki, Johan Pouwelse, Dick Epema, and the rest of the team:
The Tribler Team.
keywords cooperative downloads for file sharing networks.
features
2Fast collaborative download;
Tribler's enhanced download engine.
You can also check Tribler at the Harvard School of Engineering and Applied Sciences.
Note: you can learn more about Tribler from this technical presentation, or from this article accepted in IPTPS'06.
My page on Tribler
 
web site
 
MultiProbe VL-e, I-Share
2006-present
click to toggle project information display
peer-to-peer, file-sharing, BitTorrent, measurements, characterization, network tomography
 
VL-e logo Virtual Laboratory for e-Science | I-SHARE logo I-SHARE
with Pawel Garbacki, Johan Pouwelse, Dick Epema
keywords Large-scale underlay/overlay network measurements, The Delft BitTorrent Measurements 2.
features
a framework for large-scale underlay/overlay network measurements ;
a BitTorrent peer-level view from The Delft BitTorrent Measurements 1 traces;
a joint overview of BitTorrent and Internet from The Delft BitTorrent Measurements 2 traces;
 
web site

                                                                                                 
Refereed publications
journals/conferences/workshops | the PDS group publication database | my publications (with BibTeX files)
2014  10 publications, 10 shown by default click to toggle the display of all publications <-- click to see all publications for 2014
L. Fei, B. Ghit, A. Iosup, and D. Epema. KOALA-C: A Task Allocator for Integrated Multicluster and Multicloud Environments, In the IEEE (CLUSTER 2014) conference. Madrid, Spain, 21-26 Oct 2014. (accepted, acceptance ratio 24%=29/122)
keywords KOALA-C; multicluster scheduling; multicloud scheduling; TAGS-based cloud scheduling; empirical evaluation; experimental research; real-world experimentation; trace-based simulation.
   
KOALA-C: A Task Allocator for Integrated Multicluster and Multicloud Environments, PDF  
M. Capota, B. Ghit, T. Hegeman, D. Epema, and A. Iosup V for Vicissitude: The Challenge of Scaling Complex Big Data Workflows, In the IEEE/ACM CCGRID (SCALE Challenge 2014). Chicago, IL, USA, 26-29 May 2014. (accepted) Update 27-05-2014: We won the challenge!
keywords Vicissitude; Big Data; scientific workflow; MapReduce; Hadoop; empirical evaluation; experimental research.
   
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A. Iosup, S. Shen, Y. Guo, S. Hugtenburg, J. Donkervliet, and R. Prodan (U. Innsbruck, Austria). Massivizing Online Games Using Cloud Computing: A Vision, In the First International Workshop on Cloud Gaming Systems and Networks (C-Game 2014), held in conjunction with the IEEE International Conference on Multimedia and Expo (ICME 2014), Chengdu, China, Jul 2014.
keywords Massivizing online games; online social games; online games; virtual world management; big data processing; procedural content generation; PCG; PCG-G.
   
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B. Ghit, A. Iosup, N. Yigitbasi (Intel Labs, Portland, OR, USA), and D. Epema. Balanced Resource Allocations Across Multiple Dynamic MapReduce Clusters, In the ACM SIGMETRICS Conference on Measurement and Modeling of Computer Systems (SIGMETRICS 2014). Austin, TX, USA, 16-20 Jun 2014. (accepted, acceptance ratio 17%=40/238)
keywords Fawkes; elastic MapReduce; performance evaluation; big data processing; MapReduce; Hadoop; YARN; empirical evaluation; experimental research.
   
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A. Iosup, R. van de Bovenkamp, S. Shen, A. L. Jia, and F. A. Kuipers. An Analysis of Implicit Social Networks in Multiplayer Online Games, In the IEEE Internet Computing, special issue on Internet-Scale Games. Vol.18(3), May/Jun 2014. journal
keywords Online social games; social networks; learning; data mining; multiplayer online games; Internet applications; graph processing; graph datasets.
   
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journal
Y. Guo, A. L. Varbanescu, A. Iosup, C. Martella, and T. L. Willke. Benchmarking Graph-Processing Platforms: A Vision, In the ACM/SPEC International Conference on Performance Engineering (ICPE 2014), Work-in-Progress Track. Dublin, Ireland, 22-26 Mar 2014. (accepted, acceptance ratio 31%=6/19)
keywords graph processing; performance evaluation; big data processing; benchmarking; MapReduce; Hadoop; YARN; Giraph; GraphLab; Neo4J; graph-processing algorithms; graph datasets; empirical evaluation; experimental research.
   
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Y. Guo, M. Biczak, A. L. Varbanescu, A. Iosup, C. Martella, and T. L. Willke. How Well do Graph-Processing Platforms Perform? An Empirical Performance Evaluation and Analysis, In the IEEE International Parallel and Distributed Processing Symposium (IPDPS 2014). Phoenix, AZ, USA, 19-23 May 2014. (accepted, acceptance ratio 21%=114/541)
keywords graph processing; performance evaluation; big data processing; benchmarking; MapReduce; Hadoop; YARN; Giraph; GraphLab; Neo4J;graph-processing algorithms; graph-processing datasets; empirical evaluation; experimental research.
 
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S. Shen, N. Brouwers, and A. Iosup. Characterization of Human Mobility in Networked Virtual Environments, In the ACM Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV 2014). Singapore, 19-20 Mar 2014.
keywords mobility; networked virtual environments; characterization; online gaming; MMOG; MMO; World of Warcraft; Second Life; active measurement; experimental research.
 
 
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Alexandru Iosup and Dick Epema. An Experience Report on Using Gamification in Technical Higher Education, In the ACM Technical Symposium on Computer Science Education (SIGCSE 2014), March 5.8, 2014, Atlanta, GA, USA. (accepted)
keywords gamification; CS Ed research; experience report; Design; Experimentation; Human Factors; Computer science education; Computer organization; Cloud computing; undergraduate courses; graduate courses.
 
An Experience Report on Using Gamification in Technical Higher Education, PDF [0.5MB] | Presentation deck for An Experience Report on Using Gamification in Technical Higher Education, PDF [1.7MB]   -  
V. Nae, R. Prodan, and A. Iosup. SLA-based operations of massively multiplayer online games in clouds, In the Springer Multimedia Systems Journal (MMSJ), (accepted, in print; online pre-print available Jan 2014). journal
keywords Online social games; social networks; learning; data mining; multiplayer online games; Internet applications; graph processing; graph datasets.
 
 
 
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journal  
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2013  13 publications, 13 shown by default; 2 invited; 3 doctoral reports; 1 technical report click to toggle the display of all publications <-- click to see all publications for 2013
Kefeng Deng, Junqiang Song, and Kaijun Ren (NUDT, CN), and Alexandru Iosup (TUD, NL). Exploring Portfolio Scheduling for Long-Term Execution of Scientific Workloads in IaaS Clouds, In the ACM/IEEE Conference on High Performance Computing (SC|13). Denver, Colorado, USA, 17-22 Nov 2013. (accepted, acceptance ratio 20%=92/457)
keywords portfolio scheduler; portfolio scheduling; data center; data centre; scheduling policies; Scheduling; IaaS clouds; Cloud computing; simulation; performance evaluation; Scheduling; Quality of service and service-level agreement management.
 
- | Exploring Portfolio Scheduling for Long-Term Execution of Scientific Workloads in IaaS Clouds, PDF [1.75 MB] (Update June 2013)   -  
S. Shen, K. Deng, A. Iosup, and D. Epema. Scheduling Jobs in the Cloud Using On-demand and Reserved Instances, In the 19th International European Conference on Parallel and Distributed Computing (Euro-Par 2013).
keywords portfolio scheduler; portfolio scheduling; data center; data centre; cloud computing, scheduling, cost optimization, reserved instance, integer programming.
 
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A. L. Varbanescu and A. Iosup. On Many-Task Big Data Processing: from GPUs to Clouds. In the 6th Workshop on Many-Task Computing on Grids and Supercomputers (MTAGS) held in conjunction with SC|13. Denver, Colorado, USA, 17 Nov 2013.
keywords Large-scale big-data processing; Execution engine; Predictability; Elasticity; High-performance; portfolio scheduling; socially aware scheduling; cloud computing; cloud-based big data.
 
- | On Many-Task Big Data Processing: From GPUs to Clouds, PDF [2.0 MB]  
invited
T. Hegeman, B. Ghit, M. Capotã, J. Hidders, D. Epema, and A. Iosup. The BTWorld Use Case for Big Data Analytics: Description, MapReduce Logical Workflow, and Empirical Evaluation, In the IEEE International Conference on Big Data (Big Data 2013). Santa Clara, CA, USA, 6-9 Oct 2013. (accepted, acceptance ratio 17%=45/259)
keywords BTWorld; big data processing; use case; MapReduce logical workflow; benchmarking; performance evaluation; empirical evaluation; experimental research.
 
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Aleksandar Milenkoski (KIT, DE), Alexandru Iosup (TUD, NL), Samuel Kounev (KIT, DE), Kai Sachs (SAP AG, DE), Piotr Rygielski (KIT, DE), Jason Ding (Salesforce, CA, USA), Walfredo Cirne (Google Inc., CA, USA), Florian Rosenberg (IBM T.J. Watson, NY, USA).
Cloud Usage Patterns: A Formalism for the Description of Cloud Usage Scenarios, SPEC Research Group's Technical Report SPEC-RG-2013-001 (Version: 1.0). April 25, 2013.
keywords cloud usage patterns; formalism; cloud computing; IaaS; PaaS; SaaS; software engineering.
 
Cloud Usage Patterns: A Formalism for the Description of Cloud Usage Scenarios, PDF [3.5MB] (Update April 2013)  
K. Deng, R. Verboon, and A. Iosup A Periodic Portfolio Scheduler for Scientific Computing in the Data Center, In the 17th Workshop on Job Scheduling Strategies for Parallel Processing (JSSPP'13). Held in conjunction with the IEEE International Parallel and Distributed Processing Symposium (IPDPS). Boston, Massachusetts, USA, 24 May 2013.
keywords portfolio scheduler; portfolio scheduling; data center; data centre; scheduling policies; Scheduling; IaaS clouds; Cloud computing; simulation; performance evaluation.
 
- | A Periodic Portfolio Scheduler for Scientific Computing in the Data Center, PDF [0.7 MB] (Update May 2013)  
B. Javadi, D. Kondo, A. Iosup, and D. Epema, The Failure Trace Archive: Enabling the Comparison of Failure Measurements and Models of Distributed Systems, In Elsevier Journal of Parallel and Distributed Computing (JPDC). journal
keywords Failure Trace Archive; FTA; failure; availability; robustness; systems; characterization; modeling; Benchmarking; IaaS clouds; Cloud computing; performance evaluation.
 
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A.-C. Olteanu, N. Tapus, and A. Iosup Extending the Capabilities of Mobile Devices for Online Social Applications through Cloud Offloading, In IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid). Doctoral Symposium. Delft, the Netherlands, 20-24 May 2013.
keywords mobile applications; cloud computing; social applications; online gaming; workload characterization; workload modeling; offloading mechanisms; communication offloading; lossy performance offloading; lossless performance offloading; experimental research; empirical research.
 
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S. Shen, A. Iosup, and D. Epema Massivizing Multi-Player Online Games on Clouds, In IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid). Doctoral Symposium. Delft, the Netherlands, 20-24 May 2013.
keywords online gaming; cloud computing; workload characterization; workload modeling; scalability; elasticity; reliability; performance evaluation; experimental research; empirical research.
 
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B. Ghit, A. Iosup, and D. Epema Towards an Optimized Big Data Processing System, In IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid). Doctoral Symposium. Delft, the Netherlands, 20-24 May 2013.
keywords Big Data; elastic MapReduce; cloud computing; MapReduce; Hadoop; workload characterization; workload modeling; scalability; elasticity; performance evaluation; benchmarking; experimental research; empirical research.
 
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A. Olteanu, A. Iosup, and N. Tapus, Towards a Workload Model for Online Social Applications, In the 4th ACM/SPEC International Conference on Performance Engineering (ICPE 2013). Work-in-Progress Paper.
keywords online social gaming; workload characterization; workload modeling; Benchmarking; performance modeling.
 
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R. van de Bovenkamp, S. Shen, A. Iosup, and F.A. Kuipers, Understanding and Recommending Play Relationships in Online Social Gaming, In the 5th International Conference on COMmunication Systems and NETworkS (COMSNETS 2013), Bangalore, India, January 7-10, 2013 (invited, acceptance ratio 26%=38/144).
keywords graph processing algorithms, graph extraction, play relationships, DotA, Gaming, Online social networks, graph properties, user behavior, matchmaking.
 
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2012  7 publications, 7 shown by default click to toggle the display of all publications <-- click to see all publications for 2012
A. Iosup, R. Prodan, and D. Epema, IaaS Cloud Benchmarking: Approaches, Challenges, and Experience. In 5th Workshop on Many-Task Computing on Grids and Supercomputers (MTAGS 2012), held in conjunction with SC, Salt Lake City, Utah, USA, Nov 2012.
keywords Benchmarking; challenges; IaaS clouds; Cloud computing; performance evaluation; concepts; discussion.
 
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Y. Guo and A. Iosup, The Game Trace Archive, In International Workshop on Network and Systems Support for Games (NetGames 2012), Venice, Italy, November 22-23, 2012 (accepted, acceptance ratio 20%=9/44)
keywords The Game Trace Archive, open-access data, public data, open-source data, archive, games, Gaming, Online social networks, User behavior.

 
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V. Nae, L. Kopfle, R. Prodan, and A. Iosup, Massively Multiplayer Online Games on Unreliable Resources, In International Workshop on Network and Systems Support for Games (NetGames 2012), Venice, Italy, November 22-23, 2012 (accepted as short paper)
keywords MMOG, online gaming, fault-tolerance, cloud computing, reliability, QoS, monitoring.

 
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Y. Guo, S. Shen, O. Visser, and A. Iosup, An Analysis of Online Match-Based Games, In International Workshop on Massively Multiuser Virtual Environments (MMVE 2012), October 08-09, 2012, Munich, Germany; held in conjunction with the IEEE International Symposium on Audio-Visual Environments and Games (HAVE 2012) (accepted)
keywords match-based games, Play duration, Win ratio, Matchmaking, Gaming, Online social networks, User behavior.

 
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E. Folkerts, A. Alexandrov, K. Sachs, A. Iosup, V. Markl, and C. Tosun, Benchmarking in the Cloud: What it Should, Can, and Cannot Be. In TPC Technology Conference on Performance Evaluation and Benchmarking (TPCTC 2012), held in conjunction with VLDB 2012, Istanbul, Turkey, Aug 2012.
keywords Benchmarking; Cloud computing; performance evaluation; concepts; discussion.
 
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D. Villegas, A. Antoniou, S. M. Sadjadi, and A. Iosup, An Analysis of Provisioning and Allocation Policies for Infrastructure-as-a-Service Clouds, In IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid), May 13-16, 2012, Ottawa, Canada. (accepted; acceptance ratio 27%=83/302)
keywords Scheduling; Cloud computing; Provisioning policies; Allocation policies; Empirical performance analysis; Prediction-based scheduling.
 
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O. Agmon Ben-Yehuda, A. Schuster, A. Sharov, M. Silberstein, and A. Iosup, ExPERT: Pareto-Efficient Task Replication on Grids and a Cloud, In IEEE International Parallel and Distributed Processing Symposium (IPDPS), May 21-25, Shanghai, China. (accepted; acceptance ratio 21%=118/569)
keywords Scheduling; Cloud computing; Provisioning policies; Pareto scheduling; bags of tasks; Empirical performance analysis; Simulation-based scheduling.
 
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2011  7 publications, 7 shown by default click to toggle the display of all publications <-- click to see all publications for 2011
S. Shen, and A. Iosup, The XFire Online Meta-Gaming Network: Observation and High-Level Analysis , In International Workshop on Massively Multiuser Virtual Environments (MMVE 2011), October 14-17, 2011, Nanchang, JiangXi Province, China; held in conjunction with the IEEE International Symposium on Audio-Visual Environments and Games (HAVE 2011) (accepted)
keywords Meta-Gaming Networks, XFire, Social networks, Community structure, User Content Generation, Play duration, Gaming, Online social networks, Face to face social networks, User behavior.
 
Article The XFire Online Meta-Gaming Network: Observation and High-Level Analysis
 in MMVE 2011, PDF [0.5MB]
M. Hendrikx, S. Meijer, J. v.d. Velden, and A. Iosup, Procedural Content Generation for Games: A Survey, In ACM Transactions on Multimedia Computing, Communications and Applications (ACM TOMCCAP) (accepted with revisions; revision submitted July 2011)
keywords procedural content generation for games, survey, PCG-G, PCG, Gaming, FDG, CIG, AIIDE, DiGRA, SIGGRAPH, SIGCHI, EuroPar, LSAP, PCGames.
 
Article Procedural Content Generation for Games: A Survey in ACM TOMCCAP, PDF [1.35MB]   -
B. Zhang, A. Iosup, J. Pouwelse, and D. Epema, Identifying, Analyzing, and Modeling Flashcrowds in BitTorrent, IEEE Int'l. Conf. on Peer-to-Peer Computing (P2P'11) . An extended version is available as TU Delft Technical Report PDS-2010-009 -
keywords flashcrowds, BitTorrent, trace archive, analysis, trace characterization, statistical modeling, flashcrowd model, performance analysis, performance, Quality of Service, peer-to-peer.
 
Article Identifying, Analyzing, and Modeling Flashcrowds in BitTorrent
 in IEEE P2P 2011, PDF [1.35MB]
A. Iosup and D.H.J. Epema, Grid Computing Workloads, In IEEE Internet Computing, vol. 15, no. 2, pp. 19-26, Mar./Apr. 2011, doi:10.1109/MIC.2010.130 (accepted). journal
keywords workload, grid computing, workload characterization, grid workloads, performance evaluation.
 
Grid Computing Workloads: BoTs, Workflows, Pilots, and Others as PDS Tech.Rep., PDF [0.2MB]Electronic Edition
M. Balint, V. Posea, A. Dimitriu, and A. Iosup, An Analysis of Social Gaming Networks in Online and Face to Face Bridge Communities , In ACM Workshop on Large-scale System and Application Performance (LSAP 2011), San Jose, CA, USA, June 8, 2011; held in conjunction with the 20-th International ACM Symposium on High-Performance Parallel and Distributed Computing (HPDC 2011) (accepted)
keywords Social networks, Community structure, Gaming, Online social networks, Face to face social networks, Bridge, User behavior, Playing style.
 
Article An Analysis of Social Gaming Networks in Online and Face to Face Bridge Communities
 in ACM/IEEE LSAP 2011, PDF [0.25MB]
A. Iosup, N. Yigitbasi, and D. Epema, On the Performance Variability of Production Cloud Services, IEEE/ACM International Symposium on Cluster, Cloud, and Grid Computing (CCGrid 2011). (accepted; acceptance ratio 29%=55/189) Extended version as Technical Report PDS-2010-002
keywords cloud computing, performance variability, social applications, Amazon Web Services, Google App Engine.
 
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V. Nae, R. Prodan, T. Fahringer, and A. Iosup, A new business model for massively multiplayer online games, 2nd ACM/SPEC International Conference of Performance Engineering (ICPE 2011), March 2011. (accepted)
keywords cloud computing, economic model, massively multiplayer online games, MMOG, cloud-based gaming.
 
 
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2010  13 publications, 13 shown by default click to toggle the display of all publications <-- click to see all publications for 2010
A. Iosup, A. Lascateu, and N. Tapus, CAMEO: Enabling Social Networks for Massively Multiplayer Online Games through Continuous Analytics and Cloud Computing, In ACM/IEEE Symposium on Network and Systems Support for Games (NetGames 2010), Taipei, Taiwan, November 16-17, 2010 (accepted, acceptance ratio 30%=9/27)
keywords CAMEO, game analytics, cloud computing, massively social gaming, data acquisition, data mining, data visualization.
 
Article CAMEO: Enabling Social Networks for Massively Multiplayer Online
Games through Continuous Analytics and Cloud Computing in ACM/IEEE NetGames 2010, PDF [0.3MB] | --
M. Balint, V. Posea, A. Dimitriu, and A. Iosup, User Behavior, Social Networking, and Playing Style in Online and Face to Face Bridge Communities, In ACM/IEEE Symposium on Network and Systems Support for Games (NetGames 2010), Taipei, Taiwan, November 16-17, 2010 (accepted, short paper) Extended version as Technical Report PDS-2010-008.

keywords BBO, BBO Fans, game analytics, massively social gaming, data acquisition, data mining, social networking.
 
Article User Behavior, Social Networking, and Playing Style in Online and
Face to Face Bridge Communities in ACM/IEEE NetGames 2010, PDF [0.2MB] (Article User Behavior, Social Networking, and Playing Style in Online and
Face to Face Bridge Communities as PDS Technical Report PDS-2010-008, PDF [0.5MB]) | --
A. Iosup, S. Ostermann, N. Yigitbasi, R. Prodan, Th. Fahringer, and D. Epema, Performance Analysis of Cloud Computing Services for Many-Tasks Scientific Computing, In IEEE Transactions on Parallel and Distributed Systems (TPDS), 2010 (accepted, in print). journal
keywords cloud computing, scientific computing, performance evaluation.
 
Article Performance Analysis of Cloud Computing Services for Many-Tasks Scientific Computing in IEEE TPDS 2010, PDF [0.5MB]
BiBTeX Entry
A. Iosup, Vlad Nae, and Radu Prodan, The Impact of Virtualization on the Performance and Operational Costs of Massively Multiplayer Online Games, In Int. J. Adv. Media and Comput. (IJAMC), vol.4(4), pp.364-386, 2010 (accepted). journal
keywords massively multiplayer online games, platform, virtualization, cloud computing.
 
The Impact of Virtualization on the Performance and Operational Costs of Massively Multiplayer Online Games in IJAMC 2010, PDF [0.5MB]
Electronic EditionBiBTeX Entry
A. Iosup, POGGI: Generating Puzzle Instances for Online Games on Grid Infrastructures, In Concurrency and Computation: Practice and Experience (CPE), 2010 (accepted, in print). journal
keywords puzzle instance generation, massively multiplayer online games, content generation, platform, grid computing, cloud computing.
 
POGGI: Generating Puzzle Instances for Online Games on Grid Infrastructures in CCPE 2010, PDF [0.7MB]
Electronic EditionBiBTeX Entry
R. Prodan, V. Nae, and A. Iosup, Dynamic Resource Provisioning in Massively Multiplayer Online Games, In IEEE Transactions on Parallel and Distributed Systems (TPDS), 2010 (accepted). journal
keywords massively multiplayer online games, platform, virtualization, cloud computing.
 
Article Dynamic Resource Provisioning in Massively Multiplayer Online Games in IEEE TPDS 2010, PDF [1.0MB]
Electronic EditionBiBTeX Entry
N. Yigitbasi, M. Gallet, D. Kondo, A. Iosup, and D. Epema, Analysis and Modeling of Time-Correlated Failures in Large-Scale Distributed Systems, In ACM/IEEE International Conference on Grid Computing (Grid'10), Oct 25-29, 2010 in Brussels, Belgium (accepted, acceptance ratio 23%=28/124).
keywords large scale, distributed computing, fault tolerance, failure trace archive.
 
Article Analysis and Modeling of Time-Correlated Failures in Large-Scale Distributed Systems at ACM/IEEE Grid 2010, PDF [5.5MB] | The Failure Trace Archive
M. Gallet, N. Yigitbasi, B. Javadi, D. Kondo, A. Iosup, and D. Epema, A Model for Space-Correlated Failures in Large-Scale Distributed Systems, In Euro-Par Conference 2010, Aug 31-Sep 3, 2010 (accepted). Extended version as Technical Report PDS-2010-001.
keywords failures, availability, large-scale distributed systems, modeling, resource management.
 
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B. Zhang, A. Iosup, J. Pouwelse, D. Epema, and H. Sips, Sampling Bias in BitTorrent Measurements, In Euro-Par Conference 2010, Aug 31-Sep 3, 2010 (accepted). Extended version as Technical Report PDS-2009-005.
keywords measurement bias, trace-based analysis, BitTorrent.
 
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V. Posea, M. Balint, A. Dimitriu, A. Iosup, An analysis of the BBO fans online social gaming community, In Roedunet International Conference (RoEduNet), 2010 9th, Jun 24-26, 2010 (accepted).
keywords massively social gaming, social network analysis, BBO Fans, social networks, massively multiplayer online games, game analytics, MMOG analytics, MSG analytics.
 
Article An analysis of the BBO fans online social gaming community at RoEduNet 2010, PDF [0.8MB]
Electronic EditionBiBTeX EntryConference Entry
 
M. Wojciechowski, M. Capotã, J. Pouwelse, and A. Iosup, BTWorld: Towards Observing the Global BitTorrent File-Sharing Network, In ACM Workshop on Large-Scale System and Application Performance (LSAP'10), in conjunction with the ACM/IEEE Int'l. Symp. on High Performance Distributed Computing (HPDC'10) (accepted).
keywords measurement, BitTorrent, peer-to-peer, traces, tens of millions of swarms.
 
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BiBTeX Entry
O. Sonmez, N. Yigitbasi, S. Abrishami, A. Iosup, and D. Epema, Performance Analysis of Dynamic Workflow Scheduling in Multicluster Grids, In the ACM/IEEE Int'l. Symp. on High Performance Distributed Computing (HPDC'10), June 20-25, 2010, Chicago, IL, USA (accepted, acceptance ratio 25%=23/91).
keywords workflows, grid computing, scheduling, trace-based simulation.
 
Article Performance Analysis of Dynamic Workflow Scheduling in Multicluster Grids at HPDC 2010, PDF [0.4MB]
BiBTeX Entry
S. Ostermann, A. Iosup, N. Yigitbasi, R. Prodan, Th. Fahringer, and D. Epema, A Performance Analysis of EC2 Cloud Computing Services for Scientific Computing, In Diaz, M. and Avresky, D. and Bode, A. and Bruno, C. and Dekel, E. (Eds.): Cloudcomp 2009, LNICST 34, pp. 115-131, 2010. Cloud Computing: First International Conference, CloudComp 2009, Munich, Germany, October 19-21, 2009, Revised Selected Papers, pp. 115-131, Munich, Germany. Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering (LNICST) 34, Springer.
keywords cloud computing, scientific computing, performance evaluation.
 
Article A Performance Analysis of EC2 Cloud Computing Services for Scientific Computing at CloudComp 2009, PDF [0.5MB]
BiBTeX Entry
D. Kondo, B. Javadi, A. Iosup, and D. Epema, The Failure Trace Archive: Enabling Comparative Analysis of Failures in Diverse Distributed Systems, In IEEE International Symposium on Cluster Computing and the Grid (CCGrid'10), May 17-20, 2010, Melbourne, Victoria, Australia (accepted, acceptance ratio 23%=51/219). Best Paper Award!
keywords large scale, distributed computing, fault tolerance, failure trace archive.
 
Article The Failure Trace Archive: Enabling Comparative Analysis of Failures in Diverse Distributed Systems at IEEE CCGrid 2010, PDF [0.4MB] | The Failure Trace Archive
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
Award
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2009  8 publications, 8 shown by default click to toggle the display of all publications <-- click to see all publications for 2009
V. Nae, A. Iosup, R. Prodan, and T. Fahringer, The Impact of Virtualization on the Performance of Massively Multiplayer Online Games, In ACM/IEEE Symposium on Network and Systems Support for Games (NetGames 2009), Paris, France, November 23-24, 2009 (accepted, acceptance ratio 27%=10/37).
keywords massively multiplayer online games, platform, virtualization.
 
The Impact of Virtualization on the Performance of Massively Multiplayer Online Games at NetGames 2009, PDF [0.5MB]
Electronic EditionBiBTeX Entry  
T. B. Ionescu, A. Iosup, A. Piater, W. Scheuermann, and E. Laurien, An Aspect-Oriented Approach for Disaster Prevention Simulation Workflows on Supercomputers, Clusters, and Grids, In 3-th IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications (DS-RT 2009), Oct 25-28, 2009 (accepted).
keywords computer simulation, Aspect-Oriented Programming, software engineering, grid computing, cluster computing.
 
Article AOP Disaster Prevention Simulation Wrokflows on Supercomputers, Clusters, and Grids at IEEE DS-RT 2009, PDF [0.2MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
A. Iosup, POGGI: Puzzle-Based Online Games on Grid Infrastructures, In Euro-Par Conference 2009, Aug 25-29, 2009 (accepted). Distinguished Paper Award!
keywords massively multiplayer online games, game content generation, grid computing, resource management, workflows.
 
Article POGGI: Puzzle-Based Online Games on Grid Infrastructures at EuroPar 2009, PDF [0.8MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
Award
A. Iosup, CAMEO: Continuous Analytics for Massively Multiplayer Online Games on Cloud Resources, In 2nd International Workshop on Real Time Online Interactive Applications on the Grid (ROIA 2009), Delft, the Netherlands, August 24, 2009, Springer, LNCS vol.6043, p.289-299 (accepted). keywords massively multiplayer online games, analytics, mmog analytics, game analytics, cloud computing.
 
CAMEO: Continuous Analytics for Massively Multiplayer Online Games on Cloud Resources at ROIA 2009, PDF [0.5MB]Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
O. Sonmez, N. Yigitbasi, A. Iosup, and D.H.J. Epema, Trace-Based Evaluation of Job Runtime and Queue Wait Time Predictions in Grids, In the ACM/IEEE Int'l. Symp. on High Performance Distributed Computing (HPDC'09), Jun 11-13, 2009 (accepted).
keywords prediction, grid computing, scheduling, trace-based simulation.
 
Article Trace-Based Evaluation of Job Runtime and Queue Wait Time Predictions in Grids at HPDC 2009, PDF [0.8MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
B. Zhang, A. Iosup, P. Garbacki, J. Pouwelse, A Unified Format for Traces of Peer-to-Peer Systems, In ACM Workshop on Large-Scale System and Application Performance (LSAP'09), in conjunction with the ACM/IEEE Int'l. Symp. on High Performance Distributed Computing (HPDC'09) (accepted).
keywords standardization, peer-to-peer, traces, performance.
 
Article, A Unified Format for Traces of Peer-to-Peer Systems in LSAP'09, PDF [200KB]
Electronic EditionACM DL BiBTeX EntryACM DL Conference Entry
O. Sonmez, B. Grundeken, H. Mohamed, A. Iosup, and D.H.J. Epema, Scheduling Strategies for Cycle Scavenging in Multicluster Grid Systems, In the IEEE International Symposium on Cluster Computing and the Grid (CCGrid'09), May 18-21, 2009 (accepted; acceptance ratio 21%=57/271).
keywords cycle scavenging, grid computing, scheduling, game solving, eternity ii.
 
Article Scheduling Strategies for Cycle Scavenging in Multicluster Grid Systems at CCGrid 2009, PDF [0.2MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
N. Yigitbasi, A. Iosup, S. Ostermann, and D.H.J. Epema, C-Meter: A Framework for Performance Analysis of Computing Clouds, In the International Workshop on Cloud Computing (Cloud 2009), May 18-21, 2009, in conjunction with CCGrid'09 (accepted).
info description of a component of GrenchMark, C-Meter, that can handle performance evaluation and analysis of computing clouds.
 
Article C-Meter: A Framework for Performance Analysis of Computing Clouds at Cloud'09, PDF [0.3MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
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2008  14 publications, 10 shown by default click to toggle the display of all publications <-- click to see all publications for 2008
A. Iosup, D.H.J.Epema, T. Tannenbaum, M. Farrellee, M. Livny, Inter-Operating Grids through Delegated MatchMaking, In the Journal of Scientific Programming, Special Edition on Best Paper Award at SuperComputing 2007, IOS Press, vol. 16(2-3), pp. 233-253, 2008, DOI 10.3233/SPR-2008-0246, ISSN 1058-9244 (Print) 1875-919X (Online), (in print, journal).
info extended version of the SC'07 omonim paper.
 
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
V. Nae, A. Iosup, S. Podlipnig, R. Prodan, D.H.J.Epema, T. Fahringer, Efficient Management of Data Center Resources for Massively Multiplayer Online Games, In the ACM/IEEE SuperComputing Conference on High Performance Networking and Computing (SC'08), Nov 10-16, 2008 (accepted; acceptance ratio 20%).
keywords massively multiplyer online games (MMOG), cloud computing, data centers, virtual environments, resource provisioning, games.
 
Article Efficient Use of Data Center Resources for Massively Multiplayer Online Games at SuperComputing 2008, PDF [0.6MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
 
S. Ostermann, A. Iosup, N. Yigitbasi, R. Prodan, T. Fahringer, and D. Epema, An Early Performance Analysis of Cloud Computing Services for Scientific Computing, TU Delft/PDS Technical Report PDS-2008-12. A revised version has been submitted to the ACM/IEEE International SuperComputing Conference for High Performance, Networking, Storage and Analysis (SC 2009), Dec 2008 (submitted).
keywords cloud computing, performance evaluation, performance analysis, benchmarking, Bonnie, LMbench, CacheBench, GrenchMark, experimental research. 
Article An Early Performance Analysis of Cloud Computing Services for Scientific Computing, PDF [0.5MB]
   
C. Stratan, A. Iosup, and D.H.J. Epema, A Performance Study of Grid Workflow Engines, In the IEEE/ACM International Conference on Grid Computing (Grid 2008), Tsukuba, JP (Grid'08), Sep 2008 (accepted; acceptance ratio 19%).
info grid workflow engines, performance evaluation, GrenchMark, workflow, metrics, workload generation, experimental research.
 
Article A Performance Study of Grid Workflow Engines at Grid 2008, PDF [0.2MB] | Talk about Testing and Analyzing the Performance of Grid Workflow Engines at Grid 2008, PPT [1.0MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
A. Iosup, O. Sonmez, and D.H.J. Epema, DGSim: Comparing Grid Resource Management Architectures Through Trace-Based Simulation, In E. Luque, T. Margalef, and D. Benitez (Eds.), Euro-Par 2008, LNCS 5168, pp. 13?25, 2008, Las Palmas de Gran Canaria, Canary Islands, ES, (Euro-Par'08), Aug 2008 (accepted; acceptance ratio 30%).
info DGSim, simulation framework, grid, performance evaluation, resource management, trace-based simulation.
 
Article about the DGSim Grid Simulation Framework at EuroPar 2008, PDF [0.3MB] | Talk about the DGSim Grid Simulation Framework at EuroPar 2008, PPT [2.5MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
Honors
A. Iosup, O. Sonmez, S. Anoep, and D.H.J. Epema, The Performance of Bags-Of-Tasks in Large-Scale Distributed Computing Systems, In the IEEE Symp. on High Performance Distributed Computing (HPDC'08), Jun, 2008 (accepted; acceptance ratio 17%).
info bags-of-tasks, batches, workload modeling, scheduling, performance evaluation.
 
Article Performance of Bags-of-Tasks at HPDC 2008, PDF [0.3MB] | Talk Performance of Bags-of-Tasks at HPDC 2008, PPT [3.0MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
S. Ostermann, K. Plankensteiner, R. Prodan, T. Fahringer, A. Iosup, Workflow Monitoring and Analysis Tool for Askalon, In 3rd CoreGRID Workshop on Grid Middleware, Barcelona, Jun 2008 (accepted).
info online monitoring, online performance analysis, workflows, Askalon, grid workload.
 
 
A. Iosup, H. Li, M. Jan, S. Anoep, C. Dumitrescu, L. Wolters, and D.H.J. Epema, The Grid Workloads Archive, Future Gen. Comp. Sys., vol. 24(7), pp. 672-686, May 2008, DOI 10.1016/j.future.2008.02.003, (accepted, journal).
info largest grid and large-scale distributed computing workload traces archive.
 
The Grid Workloads Archive Journal Article, PDF [0.6MB] | The Grid Workloads Archive
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
S. Ostermann, R. Prodan, T. Fahringer, A. Iosup, and Dick Epema. Trace-based characteristics of grid workflows, In From Grids to Serice and Pervasive Computing, Thierry Priol and Mario Vanneschi (Editors), Springer Verlag, ser. CoreGRID, vol. 10, pp. 191-204, 2008, ISBN: 978-0-387-09454-0.
info workload characterization, workflows, grid workload (extended version).
 
On the characteristics of grid workflows, PDF [0.2MB] | Talk about the characteristics of grid workflows at the CoreGRID Symposium / EuroPar 2008, PPT [0.5MB]
S. Ostermann, R. Prodan, T. Fahringer, A. Iosup, On the characteristics of grid workflows, In CoreGRID Integration Workshop 2008 (accepted).
info workload characterization, workflows, grid workload.
 
On the characteristics of grid workflows, PDF [0.2MB] | Talk about the characteristics of grid workflows at the CoreGRID Symposium / EuroPar 2008, PPT [0.5MB]
Javier Bustos-Jimenez, Nicolas Bersano, Satu Elisa Schaeffer, Jose Miguel Piquer, A. Iosup, and Augusto Ciuffoletti. Estimating the size of Peer-to-Peer networks using Lambert's W function. In Grid Computing: Achievements and Prospects, S. Gorlatch, P. Fragopoulou, T. Priol (Editors), Springer, New York, USA, pp. 61-72, 2008. ISBN 978-0-387-09456-4.
info accurate estimation of the size of real p2p networks using little measurement (extended version).
 
 
Javier Bustos-Jimenez, Nicolas Bersano, Augusto Ciufoletti, A. Iosup, Jose Miguel Piquer, Elisa Schaeffer, Estimating the size of Peer-to-Peer Networks using Lambert's W function, In CoreGRID Integration Workshop 2008 (accepted).
info accurate estimation of the size of real p2p networks using little measurement.
 
 
F. Nadeem, R. Prodan, T. Fahringer, A. Iosup, Predicting resource availability in large-scale computational grids, In CoreGRID Integration Workshop 2008 (accepted).
info grid benchmarking using real (parallel) applications.
 
 
J.A. Pouwelse, P. Garbacki, J. Wang, A. Bakker, J. Yang, A. Iosup, D.H.J. Epema, M. Reinders, M. van Steen, and H.J. Sips, Tribler: A social-based peer-to-peer system, Concurrency and Computation: Practice and Experience, 2008, vol. 20(2), pp. 127--138, DOI 10.1002/cpe.1189, (accepted, journal).
info journal paper on Tribler, a peer-to-peer file-sharing system. Tribler is based on a social paradigm and is BitTorrent-compatible.
 
Article, Tribler, PDF [200KB] Article, Tribler, PS [3MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
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2007  7 publications, 5 shown by default click to toggle the display of all publications <-- click to see all publications for 2007
A. Iosup, D.H.J.Epema, T. Tannenbaum, M. Farrellee, M. Livny, Inter-Operating Grids through Delegated MatchMaking, In the ACM/IEEE SuperComputing Conference on High Performance Networking and Computing (SC'07), Nov 10-16, 2007 (accepted, 20%). SC'07 Best Paper Award finalist (top 10% accepted papers).
info inter-operating grids with a solution that combines the hierarchical and the decentralized approaches.
 
Delegated MatchMaking Article, PDF [1.5MB] | Inter-Operating Grids through Delegated MatchMaking finalist for SC'07 Best Paper Award
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
Honors
A. Iosup, GrenchMark: A Framework for Testing Large-Scale Distributed Computing Systems, In the ACM/IEEE SuperComputing Conference on High Performance Networking and Computing (SC'07), Posters/ACM Student Research Competition, Nov 10-16, 2007 (accepted). third place in the ACM SRC/Graduate Student competition.
 
GrenchMark poster gets third place for SC'07 ACM Student Research Competition (Graduate Students)
Award
A. Iosup, M. Jan, O. Sonmez, and D.H.J. Epema, On the Dynamic Resource Availability in Grids, Grid 2007, Austin, TX, USA, pp.26-33, IEEE CS (accepted, 22%). A preliminary version is available on-line as the INRIA research report 6172.
info the characteristics of the grid resource availability, and of the impact of resource unavailability on the performance of grids.
 
Article, Grid resource availability at Grid 2007, PDF [500KB] | Presentation, Dynamic resource availability at Grid 2007, PPT [900KB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
C. Dumitrescu, A. Iosup, O. Sonmez, H. Mohamed, D. Epema, Virtual Domain Sharing in e-Science based on Usage Service Level Agreements, In Towards Next Generation Grids -- Proc. of the CoreGRID Symposium 2007 August 27-28, Rennes, France, T. Priol and M. Vanneschi (eds.), Springer Verlag, 2007, pp. 15-26, ISBN 978-0-387-72497-3. (accepted, book chapter) (the Symposium was held in conjunction with Euro-Par 2007).
info grid benchmarking using real (parallel) applications.
 
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
A. Iosup, M. Jan, O. Sonmez, and D.H.J. Epema, The Characteristics and Performance of Groups of Jobs in Grids, EuroPar 2007, Lecture Notes in Computer Science, vol.4641, pp. 382-393 (accepted, 25%). A preliminary version is available on-line as the TU Delft/PDS tech. report PDS-2007-002.
info the characteristics of groups of jobs present in grid workloads, i.e., batch submissions, grouped submissions, continued submissions, and parameter sweeps.
 
Article, Grid batches at EuroPar 2007, PDF [500KB] | Presentation, Grid batches at EuroPar 2007, PDF [500KB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
F. Nadeem, R. Prodan, T. Fahringer, A. Iosup Benchmarking Grid Applications for Performance and Scalability Predictions, In the CoreGRID Workshop on Middleware at ISC2007 (ISC'07), Jun 25-26, 2007 (accepted).
info grid benchmarking using real (parallel) applications.
 
 
A. Iosup, D.H.J.Epema, P. Couvares, A. Karp, M. Livny, Build-and-Test Workloads for Grid Middleware: Problem, Analysis, and Applications, In the 7th IEEE/ACM Int'l Symposium on Cluster Computing and the Grid (CCGrid'07), May 14-17, 2007 (accepted).
article to be added
info analysis of the workloads in a large-scale build-and-test environment for grid middleware, and some hints on what one can do to provision, manage, and optimize the build-and-test process.
 
Article, Build-n-test workloads at CCGrid 2007, PDF [500KB] | Presentation, Build-n-test workloads at CCGrid 2007, PDF [500KB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
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2006  10 publications, 5 shown by default click to toggle the display of all publications <-- click to see all publications for 2006
A. Iosup, P. Garbacki, D.H.J. Epema, Provisioning and Scheduling Resources for World-Wide Data-Sharing Services, In The 2nd IEEE Int'l. Conference on e-Science and Grid Computing (e-Science), Dec 4-6, 2006, Amsterdam, NL. (accepted).
info world-wide data sharing, scheduling, provisioning, grid computing.
 
Article, PDF [110KB]
Presentation, e-Science'06 [PPT, 1.2MB] Presentation, e-Science'06 [PDF, 0.8MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
J. Bustos-Jimenez, D. Caromel, M. Leyton, A. Iosup, J.M. Piquer, The Rocking Chair and the Grid: Balancing Across Institutional Clusters, in the 2nd CoreGRID Workshop on Integrated Research in Grid Computing, 19-20 October 2006, Krakow, Poland.
info characterizing a Project Grid/Institutional Cluster environment and showing what is the impact of this environment for various latency-aware load balancing strategies. workshop workshop info
 
 
Garbacki, P., Iosup, A., and Epema, D. H. J. 2Fast: Collaborative downloads in Peer-to-Peer networks. In Proc. of the 12th ASCI Conference (ASCI), June, 2006, Lommel, Belgium.
info a preliminary version of the 2Fast paper published in IEEE P2P 2006.
 
 
Iosup, A., and Epema, D. H. J. GrenchMark: Towards a generic framework for analyzing, testing, and comparing grids. In Proc. of the 12th ASCI Conference (ASCI), June, 2006, Lommel, Belgium.
info a preliminary version of the 2Fast paper published in IEEE P2P 2006.
 
 
A. Iosup, D.H.J. Epema, C. Franke, A. Papaspyrou, L. Schley, B. Song, R. Yahyapour, On Grid Performance Evaluation using Synthetic Workloads, In The 12th Workshop on Job Scheduling Strategies for Parallel Processing (JSSPP), held in conjunction with SIGMETRICS'06, Jun 26, 2006, Saint Malo, FR. (impact rate of JSSPP: top 1.55%, source: CiteSeer impact ratings list).
info performance evaluation, synthetic grid workloads, GrenchMark.
 
Article, PDF [300KB] | GrenchMark presentation, CCGrid'06 [PPT, 1.6MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
A. Iosup, C. Dumitrescu, D.H.J. Epema, H. Li, L. Wolters, How are Real Grids Used? The Analysis of Four Grid Traces and Its Implications, The 7th IEEE/ACM International Conference on Grid Computing (Grid), Barcelona, September 28-29, 2006 (accepted, 18%). An extended version, titled An Analysis of Four Long-Term Grid Traces, can be found as Technical Report TU Delft/PDS/2006-003, ISBN 1387-2109).
info Grid computing, trace analysis, real workloads.
 
Grid Traces Presentation, Grid'06 [PPT, 0.9MB] Grid Traces Presentation, Grid'06 [PDF, 0.4MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
A. Iosup, D.H.J.Epema, GrenchMark: A Framework for Analyzing, Testing, and Comparing Grids, In the 6th IEEE/ACM Int'l Symposium on Cluster Computing and the Grid (CCGrid'06) (accepted, 25%). An extended version can be found as Technical Report TU Delft/PDS/2005-007, ISBN 1387-2109).
info Using GrenchMark: simple and composite Grid jobs, replaying traces from the Parallel Workloads Archive, 10 use cases for analyzing, testing, and comparing common grid settings.
 
Article, PDF [510KB] | GrenchMark presentation, CCGrid'06 [PPT, 3MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
P. Garbacki, A. Iosup, D.H.J. Epema, M. van Steen, 2Fast: Collaborative downloads in P2P networks, In The Sixth IEEE International Conference on Peer-to-Peer Computing (P2P), Sep 6-8, 2006, Cambridge, UK. (accepted, 21%). Best Paper Award
info 2Fast, P2P file-sharing, collaborative downloads, cooperative behavior.
 
Article, PDF [210KB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
Award
A. Iosup, P. Garbacki, J. Pouwelse, D.H.J.Epema, Correlating Topology and Path Characteristics of Overlay Networks and the Internet, In the 6th Int'l Workshop on Global and Peer-to-Peer Computing (GP2PC'06), in conjunction with the IEEE/ACM CCGrid'06. An extended version can be found as Technical Report TU Delft/PDS/2005-002, ISBN 1387-2109).
info Large-scale underlay/overlay network measurements, P2P measurements and analysis, The Delft BitTorrent Measurements 2.
info largest BitTorrent mesurements to date.
 
Article, PDF [200KB] | MultiProbe presentation, GP2PC/CCGrid'06 [PPT, 2MB]
Electronic EditionDBLP BiBTeX EntryDBLP Conference Entry
J. Pouwelse, P. Garbacki, J. Wang, A. Bakker, J.Yang, A. Iosup, D.H.J.Epema, M.Reinders, M. van Steen, H.Sips, Chitraka: A Social-Based Peer-to-Peer System, In the 5th International Workshop on Peer-to-Peer Systems (IPTPS'06), 27-28 February, 2006, Santa Barbara, CA, USA (accepted, 27%). An extended version can be found as Technical Report TU Delft/PDS/2006-002, ISBN 1387-2109).
info We propose a novel paradigm for P2P systems design, based on social principles. We use this new paradigm and the existing BitTorrent infrastructure in the design of Tribler*, a P2P file-sharing system.
* Tribler, aka Chitraka. The name was changed at the last minute before shipping the software package associated with this research, for reasons beyond the scope of this note.
 
Tribler TechRep Article, PDF [200KB]
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2005  3 publications, 2 shown by default click to toggle the display of all publications <-- click to see all publications for 2005
A. Iosup, J.Maassen, R.V.van Nieuwpoort, D.H.J.Epema, Synthetic Grid Workloads with Ibis, KOALA, and GrenchMark, in Integrated Research in GRID Computing CoreGRID Integration Workshop 2005 (Selected Papers) 27-30 November 2005, Pisa, Italy, S. Gorlatch and M. Danelutto (Eds.), Springer Verlag, 2007, 283 p.,ISBN: 978-0-387-47656-8. (accepted, book chapter)
info Integrating Koala, Ibis, and GrenchMark to generate synthetic grid workloads based on simple Grid jobs.
 
Article, PDF [250KB]
A. Iosup, P.Garbacki, J.A.Pouwelse, D.H.J.Epema, Analyzing BitTorrent: Three Lessons from One Peer-Level View, In Proceedings of the 11th ASCI Conference, pp. 96-104, 6-8 June, 2005, Heijen, The Netherlands.
info peer-level analysis of existing BitTorrent measurements.
 
BibTeX entryArticle, PDF [330KB]
A. Iosup, N. Tapus, S. Vialle, A Monitoring Architecture for Control Grids, In Proceedings of the European Grid Conference EGC2005, February 14 -16 2005, Amsterdam, The Netherlands, pp.922-931.
info hierarchical monitoring architecture with a high speed peer-level core (upper level).
 
Poster, PDF [2MB] Poster, 300dpi, JPG [6MB]
Article, PDF [175KB]
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2004  4 publications, 1 shown by default click to toggle the display of all publications <-- click to see all publications for 2004
A. Iosup, A.L. Varbanescu, T. Ionescu, N. Tapus, Gaming for Knowledge --- Curriculum on Programming Fundamentals and Technologies, In Proceedings of the The Fourth International Conference, Internet---Education---Science IES'04, 5-9 October 2004, Vinnytsia, Ukraine.
info using computer games for teaching fundamental courses from Software Engineering curricula.
 
R. Varbanescu, A. L. Varbanescu, and A. Iosup, A Hardware/Software Framework for Building RoboCar Control Systems, In Proceedings of the 8th International Symposium on Automatic Control and Computer Science SACCS'04, October 22-23, 2004, Iasi, Romania.
info a hardware robocar framework and its pettern-based multi-layered software counterpart.
 
C. Moldoveanu, C. Pop, B. Petrini, I. Moldoveanu, V. Cochina, and A. Iosup, Expert System for Evaluating the Humidity Degree in Power Transformers Isolation, In Proceedings of the National Energy Conference - CNE 2004, S5, pp.14--23, 13-17 June 2004, Neptun, Romania.
ro title Sistem Expert Pentru Evaluarea Gradului De Umezire A Izolatiei Transformatoarelor De Putere
 
A. Iosup, S. Vialle, A. DeVivo, N. Tapus, Optimizing Execution Time for Mobile Robotics Applications using Parallel and Distributed Computing, Automation and Instrumentation Magazine (Automatizari si Instrumentatie), vol.1/2004, pp.10--14, January 2004.
 
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Other publications  12 other publications, 3 shown by default click to toggle the display of all unrefereed publications <-- click to see all other publications
technical reports/internal reports/others
2007  
A. Iosup, D.H.J. Epema, M. Jan, H. Li, L. Wolters, C. Dumitrescu, The Grid Workloads Archive, IEEE/ACM International Conference on Grid Computing (Grid), Sep 2007 (accepted, poster).
info grid computing, grid workloads
 
2006  
M. Andreica, N. Tapus, A. Iosup, D.H.J. Epema, C. Dumitrescu, I. Raicu, I. Foster, M. Ripeanu, Towards ServMark, an Architecture for Testing Grids, CoreGRID Technical Report TR-0062, Nov 29, 2006.
info grid computing, performance evaluation, testing real environments
 
A. Iosup, D.H.J. Epema, C. Franke, A. Papaspyrou, L. Schley, B. Song, and Ramin Yahyapour, On Grid Performance Evaluation using Synthetic Workloads, CoreGRID Technical Report TR-0039, Sep 21, 2006.
info grid computing, workload analysis, performance analysis
 
A. Iosup, D.H.J. Epema, C. Dumitrescu, H. Li, and Lex Wolters, Grid Environments Traces: Analysis and Implications, CoreGRID Technical Report TR-0021, Nov 10, 2006.
info grid computing, workload analysis, performance analysis
 
2005  
A. Bakker, J. Doumen, P. Garbacki, A. Iosup, J.A. Pouwelse, J. Wang, J. Yang, Complete Architectural Design of an I-Share System , I-Share Deliverable 3.104, May 2005.
info peer-to-peer, bittorrent, system design
 
A. Iosup, Where in the world is Carmen BitDiego? And who is she, anyways..., ASCI A9 Report, February 2005.
info peer-to-peer, bittorrent, workload analysis, performance evaluation
 
2004  
A. Iosup, Monitoring Methods and Performance Analysis Criteria in Grid Physical Processes Control, M.Sc. Thesis, Politehnica University of Bucharest, Dept. of Computer Science, Bucharest, Romania, July 2004.
info also Tech report, Supelec, France, June 2004.
award Werner von Siemens Excellence Award on Postgraduate Throughgoing Study, Romania, October 2004.
 
Tech Report, PDF [1MB]
A. Iosup, Grid, the final frontier (2004), In Informatica, vol.4, pp.3--4, ISSN 1841-0057.
ro title Grid, ultima frontiera (2004)
 
2003  
A. Iosup, S. Vialle, A. DeVivo, N. Tapus, Optimizing Execution Time for Mobile Robotics Applications, 11th AAIR Symposium, Bucharest, Romania, September 2003.
 
A. Iosup, Parallelization and Grid Integration of a Mobile Robotics Application, B.Sc. Thesis, Politehnica University of Bucharest, Dept. of Computer Science, Bucharest, Romania, September 2003.
info also Tech report, Supelec, France, September 2003.
report Tech Report, PDF [1.6MB]
 
2002  
R. Ulrich, A. L. Varbanescu, A. Iosup, Control System for a Mini-Railroad Network, 10th AAIR Symposium, Bucharest, Romania, September 2002.
 
S. Marques, A. L. Varbanescu, A. Iosup, Drive System for Remote Control Vehicles, 10th AAIR Symposium, Bucharest, Romania, September 2002.
 
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Talks
conferences/workshops/presentations/others
2009  1 presentation(s), all shown by default click to toggle the display of all talks <-- click to see all talks for 2009
POGGI: Puzzle-Based Online Games on Grid Infrastructures, Distinguished Paper Presentation, EuroPar, Delft, NL, 27 Aug 2009.
 
POGGI: Puzzle-Based Online Games on Grid Infrastructures, PDF [1MB]  
CAMEO: Continuous Analytics for Massively Multiplayer Online Games, 30mins Presentation, ROIA, Delft, NL, 25 Aug 2009.
 
CAMEO: Continuous Analytics for Massively Multiplayer Online Games at ROIA 2009, PDF [1.5MB]  
A Grid Research Toolbox, 1h Presentation, ALEAE Project Kick-Off Meeting, Paris, FR, 1 Apr 2009.
 
Talk about A Grid Research Toolbox at ALEAE Kick-Off Meeting 2009, PDF [2.5MB] Talk about A Grid Research Toolbox at ALEAE Kick-Off Meeting 2009, PPT [7MB]  
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2008  3 presentations, all shown by default click to toggle the display of all talks <-- click to see all talks for 2008
Getting Your Work Done in Grids, Politely, Demo/Talk, VL-e Workshop 2008, Amsterdam, NL, 29 Oct 2008.
 
 
On the Characteristics of Workflow-Based Grid Workloads, in CoreGRID Symposium, in conjunction with Euro-Par 2008, Las Palmas, Canary Islands, ES, 25 Aug 2008.
 
 
Grid and Cloud Computing -- New Research Opportunities, Research Visit, U.Insbruck/Thomas Fahringer, Aug 2008.
 
 
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2007  9 presentations, 5 shown by default click to toggle the display of all talks <-- click to see all talks for 2007
Inter-Operating Grids through Delegated MatchMaking, Research Visit, IBM, 07 Nov 2007.
 
 
Grid Resource Management -- From Grid to Grid Inter-Operation, Research Visit, U.Insbruck/Thomas Fahringer, Oct 2007.
 
 
A Grid Research Toolbox, Research Visit, U.Insbruck/Thomas Fahringer, Oct 2007.
 
 
Inter-Operating Grids with Delegated MatchMaking, in EU-NCIT/EGEE Grid Initiative Summer School, Politehnica University of Bucharest, RO, Romania, 11 July 2007.
 
 
The Grid Workloads Archive, In the ASCI Conference, NL, 14 Jun 07, 2007.
 
 
ServMark : A Hierarchical Architecture for Testing Grids, in CoreGRID/UDP Distributed Systems Symposium, University Diego Portales, Santiago, Chile, 24 May 2007.
 
Talk about ServMark: A Hierarchical Architecture for Testing Grids, 2007, PPT [2MB]  
Inter-Operating Grids with Delegated MatchMaking, in Distributed Protocols Symposium, University of Chile, Santiago, Chile, 22 May 2007.
 
 
Inter-Operating Grids with Delegated MatchMaking, in CoreGRID Workshop, in conjunction with Open Grid Forum Conference 20, Manchester, UK, 11 May 2007.
 
 
GrenchMark: A Framework for Analyzing, Testing, and Comapring Grids, In the ASCI Graduate School Course A9 (Spring 2007), Delft University of Technology, Delft, May 07, 2007. (1 hour)
 
GrenchMark presentation, ASCI Graduate Course A9, Spring 2007, PPT [3MB] GrenchMark presentation, ASCI Graduate Course A9, Spring 2007, PDF [1MB]
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2006  6 presentations, none shown by default click to toggle the display of all talks <-- click to see all talks for 2006
Resource and Test Management in Grids with Koala and GrenchMark, In The EU-NCIT/EGEE Grid Initiative Summer School, Politehnica University of Bucharest, RO, Jul 20, 2006.
presentation Resource and Test Management in Grids with Koala and GrenchMark, GI'06 [PPT, 3MB] (~1h)
 
A. Iosup, Resource and Test Management in Grids with Koala and GrenchMark, In The VL-e Rapid Prototyping for e-Science Workshop, Amsterdam, NL, Jun 30, 2006.
presentation Resource and Test Management in Grids with Koala and GrenchMark, RPWS'06 [PPT, 3.5MB] (~30')
 
A. Iosup, On Grid Performance Evaluation using Synthetic Workloads, In The 12th Workshop on Job Scheduling Strategies for Parallel Processing (JSSPP), held in conjunction with SIGMETRICS'06, Saint Malo, FR, Jun 26, 2006.
presentation Grid Workload Modeling and GrenchMark presentation, JSSPP'06 [PPT, 2.2MB]
 
A. Iosup, D.H.J.Epema, Towards A Framework for Analyzing, Testing, and Comparing Grids, In the 12th ASCI Conference, Lommel, Belgium, 14 Jun, 2006.
presentation GrenchMark presentation, ASCI'06 [PPT, 3.5 MB]
 
A. Iosup, D.H.J. Epema, GrenchMark: A Framework for Analyzing, Testing, and Comparing Grids, In the 6th IEEE/ACM Int'l Symposium on Cluster Computing and the Grid (CCGrid'06), 18 May, 2006.
presentation GrenchMark presentation, CCGrid'06 [PPT, 3MB]
 
A. Iosup, Correlating Topology and Path Characteristics of Overlay Networks and the Internet, In the 6th Int'l Workshop on Global and Peer-to-Peer Computing (GP2PC'06), in conjunction with the IEEE/ACM CCGrid'06, 18 May, 2006.
presentation MultiProbe presentation, GP2PC/CCGrid'06 [PPT, 2MB]
 
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2005  2 presentations, none shown by default click to toggle the display of all talks <-- click to see all talks for 2005
Analyzing BitTorrent: Three Lessons from One Peer-Level View, The 11th ASCI Conference, Heijen, The Netherlands, 10 June, 2005.
 
Presentation, PPT [5MB]
Where in the world is Carmen BitDiego? And who is she, anyways..., The 12th ASCI Workshop (GNARP'05), Garderen, The Netherlands, 3-4 February.
 
Presentation, PPT [6.5MB]
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2004  5 presentations, none shown by default click to toggle the display of all talks <-- click to see all talks for 2004
A.L. Varbanescu, Proiecte Pentru Viitor, Invited Talk, Galaciuc, Romania, August 2004.
 
To Grid or Not(,) Today, in GridStart, Bucharest, Romania, July 2004.
 
Grid Computing: An Optimistic Introduction, Keynote in GridStart, Bucharest, Romania, July 2004.
 
Monitoring and Control for Dynamic Processes in GRID, in UPB Symposium, Bucharest, Romania, May 2004.
award 1st prize
 
The DAS grid, in Parallel and Distributed Systems Group meeting on Grid Testbeds and Development, Bucharest, Romania, April 2004.
 
ACI-GRID, in Parallel and Distributed Systems Group meeting on Grid Testbeds and Development, Bucharest, Romania, April 2004.
 
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2003  1 presentation, none shown by default click to toggle the display of all talks <-- click to see all talks for 2003
A. Iosup, S. Vialle, A. DeVivo, A. Siadat, C. Giraud-Audine, Mobile Robot Navigation and Self-Localization System: Parallel and Distributed Experiments, Seminar on Plan-Based Control of Robotic Agents, Dagstuhl, Germany, June 2003.
 
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2002  1 presentation, none shown by default click to toggle the display of all talks <-- click to see all talks for 2002
A. Iosup, D. Bitan, R. Axon, H. Galatanu, R. Stoicescu, C. Ionescu, JTrees, a Computer-Aided Learning System, U.P.B. Students Symposium, Bucharest, Romania, March 2002.
 
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Grants
funded projects/research grants/others
2004  6 grants, 1 shown by default click to toggle the display of all grants <-- click to see all grants for 2004
EU-NCIT, NCIT leading to EU IST excellency, Integrating and Strengthening the European Research Area, call Promotion of co-operation with Associated Candidate Countries: Reinforcement of the Associated Candidate Countries' Research Capacities, FP6-2004-ACC-SSA-2.
PI Prof. Nicolae Tapus, PhD, Eng
position Co-writer, technical part/Co-reviewer/collaborator
 
2004-2006
1M euros
Integrated System for Resource Discovery and Management in Grids, CNCSIS, Romania.
PI Prof. Nicolae Tapus, PhD, Eng
position collaborator
 
2004-2005
~15k euros
Resource Management and Task Scheduling in Grids, CNCSIS, Romania.
PI Prof. Valentin Cristea, PhD, Eng
position collaborator
 
2004-2005
~15k euros
AEROLINK, High Performance Network for Aeronautical Research, INFOSOC, Romania.
PI Prof. Nicolae Tapus, PhD, Eng
position collaborator
 
2004-2005
~10k euros
MON-I, Distributed Monitoring of Middleware and Applications in the National Grid Infrastructure, INFOSOC, Romania.
PI Prof. Nicolae Tapus, PhD, Eng
position Co-writer, technical part/Co-reviewer/collaborator
 
2004-2005
~8k euros
MON-R, Distributed Monitoring of Resources in the National Grid Infrastructure, Relansin, Romania.
PI Prof. Nicolae Tapus, PhD, Eng
position Co-writer, technical part/Co-reviewer/collaborator
 
2004-2005
~15k euro
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2003  1 grant, 1 shown by default
MS-Gaming, Microsoft Gaming for Knowledge - Curriculum on Programming Fundamentals and Technologies, Microsoft Research Grant.
site http://g4k.knowledge.cs.pub.ro/
position
Co-Principal Investigator/Gaming Team Leader
 
2003-2005
15k USD
2002  1 grants, 0 shown by default click to toggle the display of all grants <-- click to see all grants for 2002
Orizont 2002, Romania.
PI Prof. Nicolae Tapus, PhD, Eng
position collaborator
 
2002-2003
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Co-Organizer
workshops/seminars/others co-organizer
2009  1 events, shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2008
Euro-Par 2009, The 15th Euro-Par Conference, Topic 2: Performance Prediction and Evaluation, Delft, NL, Aug 2009.
size TBA

position Local Chair & PC member Topic 2
EuroPar 2009 web site
 
 
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2008  3 events, all shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2008
MTAGS'08, The First Int'l. Workshop on Many-Task Computing on Grids and Supercomputers (MTAGS), Austin, TX, USA, 17 Nov, 2008. In conjunction with SuperComputing 2008.
size 22 submissions, 6 accepted (37% acceptance ratio)

position PC member
MTAGS 2008 web site
 
 
ROIA'08, The First Int'l. Workshop on Real-Time Online Interactive Applications (ROIA) on the GRID, Las Palmas, Canary Islands, ES, 26-29 Aug, 2008. In conjunction with Euro-Par 2008.
size 40

position PC member
ROIA 2008 web site
 
 
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2007  2 confs, 0 shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2007
GridInitiative, The EU-NCIT/EGEE Grid Initiative summer school, Bucharest, Romania, July 2007 (3 weeks)
size 20

position co-organizer
Grid Initiative 2007 official web site
Grid Initiative 2007 temporary web site
 
 
GNARP, The 14th Graduate Network of Applied Research in Parallel Systems Workshop (GNARP), Garderen, The Netherlands, 15-16 March, 2006.
size 20

position co-organizer
GNARP 2007 web site
 
 
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2006  1 conf, 0 shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2006
GNARP, The 13th Graduate Network of Applied Research in Parallel Systems Workshop (GNARP), Olaertsduyn, Rockanje, The Netherlands, 17 March, 2006.
size 15

position co-organizer
GNARP 2006 web site
 
 
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2004  1 conf, 0 shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2004
GridInitiative, The UPB Grid Initiative GridStart summer school, Bucharest, Romania, 12-30 July 2004
size 20

position co-organizer, coordinator of training
 
 
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2003  1 conf, 0 shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2003

ACM-SE, The 26th ACM International Collegiate Programming Contest, South-Eastern Region, Bucharest, Romania, October 2003.
size 300
position co-organizer
www.acm.ro
 

 
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2002  1 conf, 0 shown by default click to toggle the display of all co-organized events <-- click to see all co-organized events for 2002
ACM-SE, The 25th ACM International Collegiate Programming Contest, South-Eastern Region, Bucharest, Romania, October 2002.
size 300
position co-organizer
www.acm.ro
 
 
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[ .bib | .pdf | .ps | .doc | .ppt ]
[ .tgz | .zip | description | any ]


 

                                                                                                                                                                                                                                             
   Online reports  
A survey of Grid Computing Workloads
added Sep 2010
   
A survey of computer benchmarking issues and approaches
added Sep 2008
   
The GrenchMark
ACM SRC Award
added Mar 2008
   
The Grid Workloads Archive
added Aug 2007
   
The Delft Grid Simulator
added Aug 2007
   
A peer-level view of a P2P network
added Aug 2005
   
   Misc  
World time zones
added Aug 2007
   
     

Last modified: Fri, 12 December, 2013 01:05 PM
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