Internal Architecture 5.5

Figure 1.Components of the GridWay Meta-scheduler.

GridWay 5 architecture consists of the following components:

• User Interface provides the end user with DRM-like commands to submit, kill, migrate, monitor and synchronize jobs and includes DRMAA (Distributed Resource Management Application API) GGF (Global Grid Forum) standard support to develop distributed applications (C and JAVA bindings).
• GridWay core is responsible for job execution management and resource brokering, providing advanced scheduling, and job failure & recovery capabilities. The Dispatch Manager performs all submission stages and watches over the efficient execution of the job. The Information Manager, through its MADs (Middleware Access Driver), is responsible for host discovery and monitoring. The Execution Manager, through its MADs, is responsible job execution and management. The Transfer Manager, through its MADs, is responsible for file staging, remote working directory set-up and remote host clean-up.
• Scheduler makes scheduling decisions for jobs on available resources.
• Information Manager MAD interfaces with the monitoring and discovering services available in the Grid infrastructure.
• Execution Manager MAD interfaces with the Job Management Services available in the Grid resources.
• Transfer Manager MAD interfaces with the Data Management Services available in the Grid resources.