Catalin Leordeanu

Publications (10)0 Total impact

• Source

  Available from: Florin Pop

  Article: An Architectural Model for a Grid based Workflow Management Platform in Scientific Applications

  Alexandru Costan, Florin Pop, Corina Stratan, Ciprian Dobre, Catalin Leordeanu, Valentin Cristea
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  ABSTRACT: With recent increasing computational and data requirements of scientific applications, the use of large clustered systems as well as distributed resources is inevitable. Although executing large applications in these environments brings increased performance, the automation of the process becomes more and more challenging. While the use of complex workflow management systems has been a viable solution for this automation process in business oriented environments, the open source engines available for scientific applications lack some functionalities or are too difficult to use for non-specialists. In this work we propose an architectural model for a grid based workflow management platform providing features like an intuitive way to describe workflows, efficient data handling mechanisms and flexible fault tolerance support. Our integrated solution introduces a workflow engine component based on ActiveBPEL extended with additional functionalities and a scheduling component providing efficient mapping between tasks and available resources.
  06/2011;
• Source

  Available from: Florin Pop

  Article: Models and Techniques for Ensuring Reliability, Safety, Availability and Security of Large Scale Distributed Systems

  Valentin Cristea, Ciprian Dobre, Florin Pop, Corina Stratan, Alexandru Costan, Catalin Leordeanu
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  ABSTRACT: 17th International Conference on Control Systems and Computer Science (CSCS 17), Bucharest, Romania, May 26-29, 2009. Vol. 1, pp. 401-406, ISSN: 2066-4451.
  06/2011;
• Conference Proceeding: Using Cell Processors for Intrusion Detection through Regular Expression Matching with Speculation.

  Catalin Radu, Catalin Leordeanu, Valentin Cristea, Daniel Luchaup
  International Conference on Complex, Intelligent and Software Intensive Systems, CISIS 2011, June 30 - July 2, 2011, Korean Bible University, Seoul, Korea; 01/2011
• Conference Proceeding: Grid-Aware Intrusion Detection System Using Gossip Algorithms.

  Ionut Ungureanu, Catalin Leordeanu, Valentin Cristea
  12th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, SYNASC 2010, Timisoara, Romania, 23-26 September 2010; 01/2010
• Conference Proceeding: Correlation of Intrusion Detection Information in Grid Environments.

  Catalin Leordeanu, Levni Arif, Valentin Cristea
  CISIS 2010, The Fourth International Conference on Complex, Intelligent and Software Intensive Systems, Krakow, Poland, 15-18 February 2010; 01/2010
• Conference Proceeding: Secure Workflow Execution in Grid Environments.

  Alexandru Lucian Petrescu, Catalin Leordeanu, Valentin Cristea
  NTMS 2009, 3rd International Conference on New Technologies, Mobility and Security, 20-23 December 2009, Cairo, Egypt; 01/2009
• Source

  Available from: Florin Pop

  Chapter: An Agent Based Architecture for DAG Scheduling

  Catalin Leordeanu, Florin Pop, Corina Stratan, Valentin Cristea
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  ABSTRACT: This paper presents an efficient agent based DAG scheduling system. The proposed system has a decentralized architecture. It is able to manage tasks with dependencies, and bases its decisions on Grid resources’ status captured dynamically and used at schedule time. Fault tolerance mechanisms can also be easily implemented, providing a great degree of certainty that the schedule results will be correct and delivered before the imposed deadline. The system has been integrated and tested with MonAlisa farms and the ApMon, which is a MonAlisa extension. The results obtained so far in the performed experiments show that the system introduces a reasonable overhead while producing higher quality mappings than the centralized ones.
  12/2007: pages 129-139;
• Source

  Available from: Florin Pop

  Conference Proceeding: A hybrid algorithm for scheduling workflow applications in grid environments (ICPDP)

  Bogdan Simion, Catalin Leordeanu, Florin Pop, Valentin Cristea
  OTM'07: Proceedings of the 2007 OTM confederated international conference on On the move to meaningful internet systems, Berlin, Heidelberg; 01/2007
• Article: Using a Failure History Service for Reliable Grid Node Information

  Catalin Leordeanu, Thomas Ropars, Yvon Jégou, Valentin Cristea, Christine Morin
  Fifth International Conference on P2P, Parallel, Grid, Cloud and Internet Computing.
• Source

  Available from: archives-ouvertes.fr

  Article: Managing Data Access on Clouds: A Generic Framework for Enforcing Security Policies

  Cristina Basescu, Alexandra Carpen-Amarie, Catalin Leordeanu, Alexandru Costan, Gabriel Antoniu
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  ABSTRACT: Recently there has been a great need to provide an adequate security level in Cloud Environments, as they are vulnerable to various attacks. Malicious behaviors such as Denial of Service attacks, especially when targeting large-scale data management systems, cannot be detected by typical authentication mechanisms and are responsible for drastically degrading the overall performance of such systems. In this paper we propose a generic security management framework allowing providers of Cloud data management systems to define and enforce complex security policies. This security framework is designed to detect and stop a large array of attacks defined through an expressive policy description language and to be easily interfaced with various data management systems. We show that we can efficiently protect a data storage system, by evaluating our security framework on top of the BlobSeer data management platform. We evaluate the benefits of preventing a DoS attack targeted towards BlobSeer through experiments performed on the Grid'5000 testbed.
  The 25th International Conference on Advanced Information Networking and Applications (AINA-2011).