Development of Web Environment for Efficient Exploitation of Linux Cluster Computing Resources 1 H. Astsatryan, T. Grigoryan, M. Gyurjyan, V. Sahakyan, Yu. Shoukourian Institute for Informatics and Automation Problems, National Academy of Sciences of Armenia 1, P. Sevak str., 375014, Yerevan, Armenia hrach@sci.am {tigrangr, Mikayel_Gyurjyan}@ipia.sci.am {svlad,shouk}@sci.am Abstract. Linux clusters are fast becoming a dominant architecture for high- performance computing. However, the management and efficient exploitation of these clusters across users, applications and data continues to be a time- consuming and challenging task. The main goal of the article is the introduction of a Web-based environment for efficient exploitation of Linux clusters, which includes a MPI debugger library and resource reservation systems. The envi- ronment allows the simplicity and efficient use of the available computing re- sources. 1 Introduction The main objective of the article is to develop a Web-based environment for efficient exploitation of Linux clusters, which allows to solve large-scale computational prob- lems for a wide range of applications. It is desirable to have a user friendly interface and to be accessible remotely, allowing the user to work on a cluster without having a physical access to it for this kind of tools. It has been developed a Web based envi- ronment including debugging and resource reservation modules, taking into account the fact that the debugging of MPI parallel tasks and resource reservation-execution components are very important for a point of view of efficient exploitation of Linux clusters. The first module called WDTT-MPI allows to develop debugging and tuning tools for parallel MPI programs and gives developer to exact control over multi-threading techniques including tools for starting parallel programs and performing debugging in real-time all from a web browser window. The WDTT-MPI lets developers control the different states of a multi-process application and display complex threaded code in a 1 The project has been funded and carried out by the Armenian government under the program 04.10.31 and ISTC A-823 project.