Abstract: A method, system, and computer program product for allocating one or more available ports on a data storage system, the data storage system having one or more data storage volumes, to enable communication with the one or more data storage volumes on the data storage system, the method, system, and computer program comprising filtering the one or more available ports on the data storage system to determine a balanced allocation of a port of the one or more available ports through one or more storage components on the data storage system, and allocating the port to the data storage volume thereby enabling access to the data storage volume through the one or more storage components.

Abstract: A parallel computing control apparatus determines, among a plurality of nodes, relay nodes located on a path from a first node allocated to a job to a second node. The parallel computing control apparatus obtains an index value indicating a use state of resources in the relay nodes. The parallel computing control apparatus calculates an estimated value of a transfer period taken to transfer data on the job from the first node to the second node, on the basis of the index value and the memory usage of the job.

Abstract: Methods and apparatus for providing resource quality estimation in a resource sharing platform having a master and resources on slaves. Embodiments include storing resource performance data for the resources and estimating resource performance using the stored performance data. A framework can use the estimated resource performance data to select between a first resource offer and a second resource offer, which can be equivalent.

Abstract: A resource configuration method of a virtual machine and a communications device. When an actual requirement of the virtual machine for the network resource is dynamically changed, the communications device may dynamically configure a communication manner corresponding to the virtual machine such that a virtual machine with a relatively low requirement for the network resource may use the manner of sharing the physical network interface card, and a virtual machine with a relatively high requirement for the network resource may use the pass-through manner, which does not cause a situation in which network resources of some virtual machines are wasted and network resources of some virtual machines are insufficient. As a result, network resources of virtual machines are properly allocated.

Abstract: In one embodiment, a predefined behavior of a virtual machine monitor (VMM) with respect to one or more virtual machines (VMs) is identified, and processor-managed resources associated with the one or more VMs are utilized based on the predefined behavior of the VMM.

Abstract: Technologies are generally described for systems, devices and methods effective to implement a virtual machine exit analyzer. A virtual machine handler may receive a request that includes an instruction. The instruction may include a port and a data block identifier. The virtual machine handler may generate a modified request. The modified request may include the port, a block portion identifier and an identification of a comparator. The virtual machine handler may send values identified by the block portion identifier to the comparator. The virtual machine handler may receive an exit indicator from the comparator that indicates whether the virtual machine should exit the core.

Abstract: Techniques for managing virtual machine backups are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for managing virtual machine backups comprising opening a file containing a virtual disk of a virtual machine, parsing the file to identify one or more partitions of the virtual disk, determining file system type for each of one or more partitions, identifying a boot partition in the file, parsing, using at least one computer processor, file system information of the boot partition to identify volume information; and generating volume composition information using the identified volume information.

Abstract: Methods, computer program products, and network authority devices are presented. The methods include, for instance: updating a source network with migration information of a virtual machine to redirect network traffic for the virtual machine to a destination network; and updating at least one remote network with the migration information of the virtual machine. In one embodiment, the updating includes updating the source network concurrent with a migration of the virtual machine to minimize interruption of the network traffic. In another embodiment, the updating includes updating a network device of the source network to forward the network traffic for the virtual machine to another network device of the destination network. In a further embodiment, the updating includes updating the source network to redirect the network traffic from at least one client on the at least one remote network.

Abstract: A method for managing a thread pool size dynamically using elemental task throughputs is provided. The method includes steps of: a computing device (a) calculating a first representative task throughput corresponding to a first group including elemental task throughputs during the first time section, and then increasing a maximum thread value for the first time section and setting it as a maximum thread value for the second time section; (b) calculating a second representative task throughput corresponding to a second group including elemental task throughputs during the second time section; and (c) comparing the first and the second representative task throughput and then, if the latter is greater than the former by an amount equal to or greater than a preset first threshold value, increasing the maximum thread value for the second time section and setting it as a maximum thread value for a third time section.

Abstract: A system and method are disclosed for dynamically reserving resources within a cluster environment. The method embodiment of the invention comprises receiving a request for resources in the cluster environment, monitoring events after receiving the request for resources and based on the monitored events, dynamically modifying at least one of the request for resources and the cluster environment.

Abstract: Managing task execution includes: receiving a specification of a plurality of tasks to be performed by respective functional modules; processing a flow of input data using a dataflow graph that includes nodes representing data processing components connected by links representing flows of data between data processing components; in response to at least one flow of data provided by at least one data processing component, generating a flow of messages; and in response to each of the messages in the flow of messages, performing an iteration of a set of one or more tasks using one or more corresponding functional modules.

Abstract: The current document is directed to methods and subsystems for communication between virtualization layers and guest operating systems. A hardware baseboard management controller (“BMC”) provides an out-of-band communications link and management interface to a computer system that can be accessed by a system administrator through a remote console. A virtualization layer may provide a virtualized BMC (“vBMC”) that provides a data-and-command-exchange medium between a guest operating system and the virtualization layer. The virtualization layer may transmit commands, query status and configuration information, and transfer data through this data-and-command-exchange medium to the guest operating system.

Abstract: A system, methods, and apparatus for using hypervisor trapping for protection against interrupts in virtual machine functions are disclosed. A system includes memory, one or more physical processors, a virtual machine executing on the one or more physical processors, and a hypervisor executing on the one or more physical processors. The hypervisor reads an interrupt data structure on the virtual machine. The hypervisor determines whether the interrupt data structure points to an alternate page view. Responsive to determining that the interrupt data structure points to an alternate page view, the hypervisor disables a virtual machine function.

Abstract: Techniques for enforcing a compliance requirement for a software application executing in a virtualized computing environment are disclosed. An identifier identifies a resource instantiated for the application's execution. A retriever retrieves a compliance characteristic for the application. The compliance characteristic is retrieved based on the identified resource and has an associated compliance criterion based on a formal parameter. The compliance criterion defines compliant resource states. A selector selects a software component for providing an actual parameter corresponding to the formal parameter . An evaluator evaluates the compliance criterion using the actual parameter. An application modifier, responsive to the resource lacking a compliant resource state, modifies the software application to have a resource with a compliant state. The identifier, selector, and evaluator respond to resource changes.

Abstract: Provided is a method and apparatus for an adaptive context switching for a fast block input/output. The adaptive context switching method may include: requesting, by a process, an input/output device to perform an input/output of data; comparing a Central Processing Unit (CPU) effectiveness based on whether the context switching is performed; and performing the input/output through the context switching to a driver context of the input/output device, or directly performing, by the process, the input/output based on a comparison result of the CPU effectiveness.

Abstract: A method, system and computer readable media for deploying a virtual appliance are provided. The method includes receiving values of input parameters of a configuration file of a virtual appliance. The method includes for one of the values, determining, prior to activating the virtual appliance, whether the one of the values is in compliance with a configuration of one or more appliances. The method includes deploying the virtual appliance into the one or more appliances. In response to determining that the one of the values is in compliance, the method includes configuring the virtual appliance in accordance with the one of the values, wherein the determining is executed through a processor.

Abstract: Methods of generating filters automatically from data processing jobs are described. In an embodiment, these filters are automatically generated from a compiled version of the data processing job using static analysis which is applied to a high-level representation of the job. The executable filter is arranged to suppress rows and/or columns within the data to which the job is applied and which do not affect the output of the job. The filters are generated by a filter generator and then stored and applied dynamically at a filtering proxy that may be co-located with the storage node that holds the data. In another embodiment, the filtered data may be cached close to a compute node which runs the job and data may be provided to the compute node from the local cache rather than from the filtering proxy.

Abstract: An example method of providing a dirty bitmap to an application includes receiving a request for a snapshot of an internal dirty bitmap. The internal dirty bitmap indicates whether a guest has updated one or more pages in guest memory since a previously received request for a snapshot of the internal dirty bitmap. The method also includes copying a set of bits of the internal dirty bitmap into a shared dirty bitmap, which is accessible by the hypervisor and application. The method further includes for each bit of the set of bits having a first value, setting the respective bit to a second value. The method also includes invalidating all cache lines in a set of pages corresponding to one or more bits having the first value in the shared dirty bitmap. The method further includes after invalidating the cache lines, providing the shared dirty bitmap to the application.

Abstract: Technologies are generally described for systems, devices and methods effective to process a composite task to be applied to an ontology. In some examples, the methods may include a processor receiving a composite task. The methods may include the processor transforming the composite task into a set of atomic tasks. The set of atomic tasks may include at least a first atomic task, a second atomic task, and a third atomic task. The methods may include the processor determining that the first atomic task is equivalent to the second atomic task based on the ontology. The methods may include the processor removing the second atomic task from the set of atomic tasks to generate a list of atomic tasks. The methods may include the processor applying the list of atomic tasks to the ontology.

Abstract: Software asset management (SAM) for virtual environments performing the following operations: (i) collecting a set of virtual machine (VM) descriptor(s) sets, where each VM descriptor(s) set corresponds to one of the following: a VM appliance or a sealed VM image; (ii) for each VM descriptor(s) set of the set of VM descriptor(s) set(s), determining whether there is a match to an entry in a VM descriptor set/software application mapping data set; and (iii) for each VM descriptor(s) set of the set of VM descriptor(s) set(s), on condition that there is a match, determining an identity of a set of software application(s) in the VM appliance or sealed VM image corresponding to the VM descriptor(s) set based on the respectively matching entry in the VM descriptor/software mapping data set.