WebSphere Extended Deployment, Version 6.0.x
             Operating Systems: AIX, HP-UX, Linux, Solaris, Windows, z/OS


business grid overview

The Java 2 Platform, Enterprise Edition (J2EE) applications that are typically hosted by WebSphere Application Server perform short, lightweight, transactional units of work. In most cases, an individual request can be satisfied with a few seconds of CPU time and relatively little memory. Many applications, however, need to perform computational and resource-intensive work that does not fit this transactional paradigm. These applications need business grid.

The business grid function in WebSphere Extended Deployment extends WebSphere Application Server to accommodate applications that need to perform long-running work alongside transactional applications, as shown in the following graphic. Long-running work might take hours or even days to complete and consume large amounts of memory or processing power while it runs.

Grid workloads

WebSphere Extended Deployment uses jobs to express units of long-running work. Work in computational grid is long-running (LR), and in transactional grid is OLTP (transaction processing). A job describes the work, which application is needed to perform the work, and can include additional information to help WebSphere Application Server handle the work effectively and efficiently. Jobs are specified in an XML dialect called xJCL and can be submitted programmatically or through a command-line interface. As part of a job submission, the job is persisted in an external database and given to the long-running scheduler component of WebSphere Extended Deployment. The long-running scheduler pairs waiting jobs with available capacity in the cell and distributes the jobs to execution environments to run.

As with the dynamic operations function, the business grid has autonomic management functions to dynamically adapt your environment to changing workload.

The business grid provides the following autonomic function:



Related concepts
Getting started with Compute Grid
Related tasks
The Compute Grid programming models
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Last updated: Nov 30, 2007 3:56:25 PM EST
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