Chapter 3
Grid Scheduling and Information
Services
3.
1 Introduction
Scheduling and information services are two components of grids, which
play an important role in the overall performance of an application running
on the grid.
The information services...
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Chapter 3
Grid Scheduling and Information
Services
3.
1 Introduction
Scheduling and information services are two components of grids, which
play an important role in the overall performance of an application running
on the grid.
The information services complement the grid scheduling system.
They provide information about status and availability of resources in the grid.
The resources in the grid can either be physical resources such as processors,
memory and network bandwidth or a service offered by a node in the grid.
Scheduling a job on a node requires two considerations.
First, does the resource fulfill the minimum requirements and specific QoS requirements, if any,
for the execution of the job? Second, is the resource available to serve the job?
Both are provided by the grid information service.
However, a scheduling decision is not as simple as that.
We now present some cases that complicate the
scheduling decision.
A task may be composed of several sub-tasks, which are
exec
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