Abstract: A communication method of virtual machines and a server-end system are provided. A virtual hardware address is assigned to a virtual machine when the virtual machine are established, wherein the virtual hardware address includes a tenant identity. A validation procedure for a packet is performed when the virtual machine desires to communicate with another virtual machine by transmitting the packet, so as to determine whether the virtual hardware addresses of the source-end and the destination-end in the packet have the same tenant identity. If the both virtual hardware addresses have the same tenant identity, the packet is transmitted to the another virtual machine.

Abstract: Running of a root instance of an application is started. The root instance includes at least one thread. In response to determining that a thread of the root instance runs to a preset freezing point in the application, running of all threads of the root instance is stopped. In response to starting to run an additional instance of the application, a running state of all threads of the root instance is replicated as a running state of all threads of the additional instance of the application. Running all threads of the additional instance of the application is continued.

Abstract: A storage manager connects containers of virtual machine (VM) images and virtual storage device data within hosts. The storage management provides a set of northbound application programming interfaces (APIs) that allow configuration of images associated with VM images and virtual storage devices provided to the operating systems and applications within virtual machine images. The northbound APIs, include methods for creating a virtual storage container that contains storage for the VM instance and also at least one virtual storage device to be provided to an operating system executed by the VM, a method for causing an attach of the virtual storage container to the host and a method for causing a deployment of the virtual storage device within the host. A set of southbound APIs are provided by the host, including at least a method that creates virtual storage devices and a method that attaches virtual storage devices to the host.

Abstract: There are provided methods and computer program products for generating code for an architecture encoding an extended register specification. A method for generating code for a fixed-width instruction set includes identifying a non-contiguous register specifier. The method further includes generating a fixed-width instruction word that includes the non-contiguous register specifier.

Abstract: There are provided methods and computer program products for generating code for an architecture encoding an extended register specification. A method for generating code for a fixed-width instruction set includes identifying a non-contiguous register specifier. The method further includes generating a fixed-width instruction word that includes the non-contiguous register specifier.

Abstract: A method for providing control of Java resource runtime usage may include establishing communication with one or more Java virtual machines (JVMs) forming a hive via a hive communication channel where the hive comprises a plurality of JVMs configured to enable utilization of at least one shared resource, receiving, via the hive communication channel, environmental information indicative of hive activity relative to the at least one shared resource from at least one of the one or more JVMs, and adapting, via processing circuitry, operations associated with use of the at least one shared resource based on the environmental information.

Abstract: A method for providing control of Java resource runtime usage may include establishing communication with one or more Java virtual machines (JVMs) forming a hive via a hive communication channel where the hive comprises a plurality of JVMs configured to enable utilization of at least one shared resource, receiving, via the hive communication channel, environmental information indicative of hive activity relative to the at least one shared resource from at least one of the one or more JVMs, and adapting, via processing circuitry, operations associated with use of the at least one shared resource based on the environmental information.

Abstract: Embodiments of the present disclosure provide methods and systems for generating an alert based upon detection of a pattern of events within a virtual infrastructure. Other embodiments may be described and claimed.

Abstract: A host controller associates each virtual machine with at least one label from a hierarchy of labels, where each label represents a distinct virtual machine parameter. The host controller also associates a user with one or more roles and with one or more labels from the hierarchy of labels, where each role defines at least one action permitted to be performed with respect to virtual machines. The host controller further facilitates control over user actions pertaining to virtual machines based on the roles and the labels associated with the user.

Abstract: In embodiments of virtual machine migration, a virtual machine migration system includes a storage array that maintains data. A first host computer includes at least one virtual machine with a virtual drive that is mapped to a logical unit number (LUN) of the storage array, and the LUN corresponds to a LUN mask that associates the LUN with the first host computer. A virtual manager is executable on the first host computer, and is implemented to unmask the LUN to migrate the virtual machine from the first host computer to a second host computer that is configurable as a host of the virtual machine. The virtual manager can log the first host computer out of the LUN and the second host computer can log into the LUN to access the data in the storage array.

Abstract: Methods and apparatuses associated with cloud computing are disclosed herein. In embodiments, a method may include receiving, by a service monitor operating on a computing device, performance information associated with services provided by an application service with instances operating on a plurality of virtual machines deployed on a plurality of servers of a computing cloud. The service monitor, in response, may identify one or more requests of the computing cloud to attempt to improve performance of the services provided by the application service. Other embodiments may be disclosed and claimed.

Abstract: Disclosed herein are an apparatus and method for virtualizing Input/Output (I/O) devices. The apparatus includes a hardware device control unit, a guest Operating System (OS) unit, a virtual machine monitor unit, and a host OS unit. The hardware device control unit controls the I/O devices of a terminal. The guest OS unit runs a guest OS via a virtual machine. The virtual machine monitor unit includes shared memory and an event channel, stores an instruction and data, and transfers the stored instruction and the data to a host OS. The host OS unit performs the operation of assigning the shared memory to the virtual machine monitor unit, the operation of generating the event channel, and an operation corresponding to the I/O instruction, stores the results of performance of the operations, and performs control so that the results of the performance of the operations are sent to the guest OS unit.

Abstract: One embodiment of the present invention is a technique for optimizing a task graph that specifies multiple tasks and the dependencies between the specified tasks. When optimizing the task graph, the optimization engine performs multiple iterations of runtime optimization operations on the task graph. At each iteration, an optimized task graph is generated based on a different task aggregation topology. The optimized task graph is then compiled and executed. Runtime statistics related to the execution are collected, and, in subsequent iterations, the task graph is further optimized based on the collected statistics. Once the optimization process is complete, the most optimal task graph topology that was identified during the process is used to generate an optimized task graph for execution.

Abstract: Disclosed is an improved approach to implement I/O and storage device management in a virtualization environment. According to some approaches, a Service VM is employed to control and manage any type of storage device, including directly attached storage in addition to networked and cloud storage. The Service VM implements the Storage Controller logic in the user space, and can be migrated as needed from one node to another. IP-based requests are used to send I/O request to the Service VMs. The Service VM can directly implement storage and I/O optimizations within the direct data access path, without the need for add-on products.

Abstract: A method to instrument program code for a virtual machine that comprises, in the course of loading a class to a virtual machine, adding code to the class to declare a field that corresponds to a field declared in a first bootstrap class.

Abstract: Technologies are generally described for runtime management of processes on multicore processing systems using process affinity graphs. Two or more processes may be determined to be related when the processes share interprocess messaging traffic. These related processes may be allocated to neighboring or nearby processor cores within a multicore processor using graph theory techniques as well as communication analysis techniques to evaluate interprocess communication needs. Process affinity graphs may be established to aid in determining grouping of processors and evaluating interprocess message traffic between groups of processes. The process affinity graphs may be based upon process affinity scores determined by monitoring and analyzing interprocess messaging traffic. Process affinity graphs may further inform splitting process affinity groups from one core onto two or more cores.

Abstract: A system and a method are disclosed for an activity manager providing a centralized component for allocating resources of a mobile computing device among various activities. An activity represents work performed using computing device resources, such as processor time, memory, storage device space or network connections. An application or system service requests generation of an activity by the activity manager, causing the activity manager to associate a priority level with the activity request and identify resources used by the activity. Based on the priority level, resources used and current resource availability of the mobile computing device, the activity manager determines when the activity is allocated mobile computing device resources. Using the priority level allows the activity manager to optimize performance of certain activities, such as activities receiving data from a user.

Abstract: A novel and useful system and method of improving the utilization of a special purpose accelerator in a system incorporating a general purpose processor. In some embodiments, the current queue status of the special purpose accelerator is periodically monitored using a background monitoring process/thread and the current queue status is stored in a shared memory. A shim redirection layer added a priori to a library function task determines at runtime and in user space whether to execute the library function task on the special purpose accelerator or the general purpose processor. At runtime, using the shim redirection layer and based on the current queue status, it is determined whether to execute the library function task on the special purpose accelerator or on the general purpose processor.

Abstract: A computer produces a first schedule of jobs including ongoing jobs and pending jobs which is to cause a plurality of computing resources to execute the pending jobs while preventing suspension of the ongoing jobs running on the computing resources. The computer also produces a second schedule of the jobs which allows the ongoing jobs to be suspended and rescheduled to cause the computing resources to execute the suspended jobs and pending jobs. Based on the produced first and second schedules, the computer calculates an advantage factor representing advantages to be obtained by suspending jobs, as well as a loss factor representing losses to be caused by suspending jobs. The computer chooses either the first schedule or the second schedule, based on a comparison between the advantage factor and loss factor.

Abstract: Embodiments of the present invention provide a method for monitoring components in a library by tracking the movement of library components. By tracking the movement of library components, the degradation of library components can be monitored and the reliability of library components determined, allowing unreliable components to be bypassed or replaced, enhancing the reliability of the library and preventing data loss.