Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media for performing preflight checks of a distributed computing system, are described. In one aspect, a method includes assigning a computing workload to a first subset of hardware accelerator machines each having one or more hardware accelerators. A preflight check on the first subset is performed before performing the computing workload to verify the functionality of each machine in the first subset. For each hardware accelerator machine of the first subset, a program code package is installed, including a task action based at least in part on characteristics of the computing workload. The task action including a sequence of operations is performed on the hardware accelerator machine to determine whether the task action fails. Whenever the task action fails, the computing workload is re-assigned to a second subset of hardware accelerator machines different from the first subset.

Abstract: The present disclosure provides a probabilistic framework that can calculate the probability of fulfilling demands for a given set of traffic flows. In some implementations, the probability of fulfilling demands can be based on the probability of infrastructure component failures, shared risk link groups derived from a cross-layer network topology, and traffic engineering (TE) considerations. The consideration of the cross-layer network topology enables the systems and methods described herein to account for the relationship between the physical and logical topologies.

Abstract: The present disclosure provides a probabilistic framework that can calculate the probability of fulfilling demands for a given set of traffic flows. In some implementations, the probability of fulfilling demands can be based on the probability of infrastructure component failures, shared risk link groups derived from a cross-layer network topology, and traffic engineering (TE) considerations. The consideration of the cross-layer network topology enables the systems and methods described herein to account for the relationship between the physical and logical topologies.

Abstract: A method described herein includes an act of receiving indications of threshold levels of quality of service to maintain for each of a plurality of virtual machines sharing computing resources on a server, wherein quality of service is affected by interference caused by the plurality of virtual machines sharing the computing resources on the server. The method also includes an act of dynamically allocating computing resources amongst the plurality of virtual machines to maintain levels of quality of service for each of the plurality of virtual machines at or above the threshold levels of quality of service.

Abstract: A method described herein includes an act of receiving indications of threshold levels of quality of service to maintain for each of a plurality of virtual machines sharing computing resources on a server, wherein quality of service is affected by interference caused by the plurality of virtual machines sharing the computing resources on the server. The method also includes an act of dynamically allocating computing resources amongst the plurality of virtual machines to maintain levels of quality of service for each of the plurality of virtual machines at or above the threshold levels of quality of service.