This paper proposes a two-level scheduler for dynamically scheduling a continuous stream of sequential and multi-threaded batch jobs on large-scale grids, made up of interconnected clusters of heterogeneous single-processor and/or symmetric multiprocessor machines. The scheduler aims to schedule arriving jobs respecting their computational and deadline requirements, and optimizing the hardware ...

This paper reports the results of a study that investigates changes in skill requirements of information systems professionals in Singapore. The study coded representative job advertisements that appeared in the newspapers over a period of fifteen years – from 1983 to 1998. The coding results indicate that job profiles for programmers and IS managers have not changed dramatically over the years...

This paper has been inspired by the study of the complex data set from the Czech National Grid MetaCentrum. Unlike other widely used workloads from Parallel Workloads Archive or Grid Workloads Archive, this data set includes additional information concerning machine failures, job requirements and machine parameters which allows to perform more realistic simulations. We show that large differenc...

IT organizations face many new challenges. While strong IT leaders are needed, few IT leadership teams as yet are well-equipped for the job. Very practical reasons imply that all IT staff should now be expected to act as leaders, regardless of their official job title: a new top line focus; the growing impact of IT decisions on organizations; and the complexity of the work to be done. These req...

The use of grid technology and web services for resource sharing has received tremendous attention in recent years. The merging of these 2 technologies is able to provide additional multiple types of services and functionalities. However, the problem of scheduling services to meet quality of service (QoS) requirements remains challenging. This paper proposes an adaptive QoS (AQoS) scheduling al...

As worldwide demand of hydrocarbon is growing fast, the oil and gas companies have been forced to explore reservoirs with more hostile conditions, such as high-pressure, high-temperature conditions. Improved technology, material selection and testing procedures are required to overcome the common problems in these conditions. One of the main phases of well construction is cementing job. Appropr...

In extremely heterogeneous and distributed systems, like Grid environments, it is quite difficult to provide quality of service (QoS). In addition, the dynamic behaviour of the resources makes the time needed to complete the execution of a job highly variable. So, fulfilling the user QoS requirements in a Grid is still an open issue. The main aim of this work is to provide QoS in Grid environme...

Grid resource selection requires matching job requirements to available resources. This is a difficult problem when the number of attributes for each resource is large. We present an algorithm that uses the Singular Value Decomposition to encode each resource’s properties by a single value. Jobs are matched by using the same encoding to produce a value that can be rapidly compared to those of t...

ecotourism is compatible kind of tourism. today, tourism industry has a great role in creating job opportunities and increasing income level. having unique ecotourism properties (subcategorized under natural parks, jungle and plain, river and lake, waterfall, spring and cave – as one of these attractions, upside-down tulip plains can be named which have a national function) and regarding geog...