Abstract: Certain embodiments of the present invention provide systems and method for automatic inference and adaptation of a virtualized computer environment. Certain embodiments of a system include a virtual topology and traffic inference framework tool adapted to monitor traffic for an application on a virtual network to produce a view of network demands for the application. The system also includes a monitoring tool adapted to monitor performance of an underlying physical network associated with the virtual network using traffic for the application. Further, the system includes an adaptation component adapted to automatically adapt the application to the virtual network based on the measured application traffic, the monitored network performance, and one or more adaptation control algorithms.

Abstract: Certain embodiments of the present invention provide systems and method for time-sharing parallel applications with performance isolation and control through feedback-controlled real-time scheduling. Certain embodiments provide a computing system for time-sharing parallel applications. The system includes a controller adapted to determine a scheduling constraint for each thread of execution for an application based at least in part on a target execution rate for the application. The system also includes a local scheduler executing on a node in the computing system. The local scheduler schedules execution of a thread of execution for the application based on the scheduling constraint received from the controller. The local scheduler provides feedback regarding a current execution rate for the application thread to the controller, and the controller modifies the scheduling constraint for the local scheduler based on the feedback.

Abstract: Certain embodiments of the present invention provide systems and method for automatic inference and adaptation of a virtualized computer environment. Certain embodiments of a system include a virtual topology and traffic inference framework tool adapted to monitor traffic for an application on a virtual network to produce a view of network demands for the application. The system also includes a monitoring tool adapted to monitor performance of an underlying physical network associated with the virtual network using traffic for the application. Further, the system includes an adaptation component adapted to automatically adapt the application to the virtual network based on the measured application traffic, the monitored network performance, and one or more adaptation control algorithms.