Abstract: Briefly, aspects of the subject matter described herein relate to job submission. In aspects, a client (which itself may be a scheduler) sends a request to a scheduler to execute a job. The client may indicate which extensions to a base job submission protocol the client supports. The scheduler may implement a base case protocol and may also implement extensions to the base case. The client and scheduler may communicate information and requests about a job based on extensions both support, if any. The scheduler maintains state information about executing jobs that may include substate information without affecting interoperability with clients that do not recognize substates. A job may be in multiple substates at the same time.

Abstract: A service controller for providing centralized service management, control and placement, as well as guaranteed failover, in a dynamic and distributed computing environment. The service controller works in conjunction with a computing resource supply manager, which supplies the required resources so that the service controller can run the service on the allocated resources. The number of active service instances may dynamically increase or decrease in accordance with changing availability of or demand for resources. The service controller monitors the service instances and takes appropriate action in the event of service instance failures. The service controller is provided with a service director component, which records and tracks, for each service instance which has been started on a particular resource/host, the IP address of such host, through a name location service, thus allowing end-users to locate the service regardless of where the service instances are physically running.

Abstract: A service controller for providing centralized service management, control and placement, as well as guaranteed failover, in a dynamic and distributed computing environment. The service controller works in conjunction with a computing resource supply manager, which supplies the required resources so that the service controller can run the service on the allocated resources. The number of active service instances may dynamically increase or decrease in accordance with changing availability of or demand for resources. The service controller monitors the service instances and takes appropriate action in the event of service instance failures. The service controller is provided with a service director component, which records and tracks, for each service instance which has been started on a particular resource/host, the IP address of such host, through a name location service, thus allowing end-users to locate the service regardless of where the service instances are physically running.