Branimir Radic

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Grid is a distributed environment that integrates computing, storage and other resources in order to enable execution of applications that cannot be run on a single resource. Such environment requires advanced scheduling system in order to efficiently execute users' applications. In this paper, we give overview of issues related to grid scheduling. We(More)
Grid is a highly distributed heterogeneous environment which interoperates towards completing a common goal. As such grids performance is highly dependant on the speed of data transfer between systems of which grid comprises. Most commonly used and a "de facto" standard for data transfer on grid systems is GridFTP. While working on CRO-GRID Infrastructure(More)
Computational grids are platform for demanding scientific and engineering applications. Such applications usually need complex mapping of tasks to resources. Scheduling in dynamic and fault-prone grid environment is very difficult procedure and universal solution has not been designed yet. However scheduling system is necessary in order to enable users to(More)
Computer grids are often used for conducting intensive scientific or technological calculations. Those calculations often require a specific mechanism for manipulating data. Besides demands for data manipulation built in the executions there is also the demand for storing data about data – location of data, accessibility and so on. This data, called(More)
Grid is distributed, heterogeneous environment comprised of various resources. Monitoring of grid resources is essential for realizing functionalities such as failure detection, application performance analysis, debugging, execution management, etc. Today many mature monitoring systems exist, but there are no complete solutions and functionalities of(More)
Computer grids are briefly described as highly distributed systems of computer resources which cooperate together towards creating a reliable, scalable dynamically changeable system for providing resources and services to users. Dynamical nature of grid creates additional security challenges. This paper gives an overview of security demands which a grid(More)
Today there are numerous authorization systems both for protecting and managing individual and distributed computer systems. Systems for authentication and authorization for distributed systems work only on software they were developed for. A complete system of authentication and authorization that works with different grid middleware is not yet developed.(More)
A System for Distributed Computing Based on H2O and JXTA Motivation The communication requirements of common Grid middlewares, with their extensive demand for unhindered communication, run contrary to the concept of legacy firewalls. The devices are normally statically configured to accept or deny certain packets or communication streams. Advanced firewalls(More)
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