In a paper simulation modelling of Grid infrastructure is carried out in order to investigate and analyze its productivity. For this purpose, GridSim modelling package is used. An approach based on the operational analysis is applied for the performance analysis of the Grid system. Such approach enables qualitative and quantitative estimation of the Grid system performance.

Рассмотрены вопросы интеграции Grid-систем исследования Земли. Приведены возможные подходы к решению задач, возникающих при интеграции: обмен сертификатами, обмен данными, доступ к геопространственным данным, выполнение заданий и т.д. В качестве примера использования этих решений описана InterGrid-система, которая объединяет несколько региональных и национальных Grid-систем и направлена на решения задач экологического мониторинга и мониторинга природных чрезвычайных ситуаций.

This paper presents a Grid infrastructure that is being developed at the Space Research Institute NASU-NSAU, and integrates the resources of several geographically distributed organizations. The use of Grid technologies is motivated by the need to make computations in the near real-time for fast response to natural disasters and to manage large volumes of satellite data. We use the Grid infrastructure for a number of applications that heavily rely on Earth observation data. The applications include: weather prediction, flood monitoring, biodiversity assessment, crop yield prediction, and Earth land parameters estimation.