Workflow Support for Complex Grid Applications: Integrated and Portal Solutions
نویسندگان
چکیده
In this paper we present a workflow solution to support graphically the design, execution, monitoring, and performance visualisation of complex grid applications. The described workflow concept can provide interoperability among different types of legacy applications on heterogeneous computational platforms, such as Condor or Globus based grids. The major design and implementation issues concerning the integration of Condor/CondorG/DAGman tools, Mercury/GRM grid monitoring infrastructure, PROVE performance visualisation tool, and the new high-level workflow editor and manager of P-GRADE development environment are discussed in the case of the integrated and the portal version as well. The integrated version of PGRADE represents the thick client concept, while the portal version needs only a thin client and can be accessed by a standard web browser. To illustrate the application of our approach in the grid, an ultra-short range weather prediction system is presented that can be executed on a Condor-G/Globus based testbed and its execution can also be visualised not only at workflow level but at the level of individual jobs, too.
منابع مشابه
Components and workflow based Grid programming environment for integrated image-processing applications
With the development of high-performance computing technologies, Grid computing has emerged as a new infrastructure for applications with resource integration. However, some obstacles for the prevalence of Grid and Grid application developments are still to be overcome, which is largely due to the immature Gridenabled computing environment and its geographically distributed and non-centralized ...
متن کاملAutomatic Deployment and Interoperability of Grid Services
The Grid Execution Management for Legacy Code Architecture (GEMLCA) enables exposing legacy applications as Grid services without re-engineering the code, or even requiring access to the source files. The integration of current GT3 and GT4 based GEMLCA implementations with the PGRADE Grid portal allows the creation, execution and visualisation of complex Grid workflows composed of legacy and no...
متن کاملUtilizing Heterogeneous Data Sources in Computational Grid Workflows
Besides computation intensive tasks, the Grid also facilitates sharing and processing very large databases and file systems that are distributed over multiple resources and administrative domains. Although accessing data in the Grid is supported by various lower level tools, end-users find it difficult to utilise these solutions directly. High level environments, such as Grid portal and workflo...
متن کاملJava CoG Kit Workflow Concepts for Scientific Experiments
Many scientific simulations and experiments require the coordination of numerous tasks posed by interdisciplinary research teams. Grids can provide access to the necessary high-end resources to conduct such tasks. The complex tasks and their interactions must be supported through convenient tools. To address this issue, we introduce a number of Grid abstractions that make the development of Gri...
متن کاملWorkflow-level Parameter Study Management in multi-Grid environments by the P- GRADE Grid portal
Workflow applications are frequently used in many production Grids. There is a natural need to run the same workflow with many different parameter sets. Unfortunately current Grid portals either do not support this kind of applications or give only specialized support and hence users are obliged to do all the tedious work needed to manage such parameter study applications. P-GRADE portal has be...
متن کامل