摘要:
A management capability is provided for a virtual computing platform. In one example, this platform allows interconnected physical resources such as processors, memory, network interfaces and storage interfaces to be abstracted and mapped to virtual resources (e.g., virtual mainframes, virtual partitions). Virtual resources contained in a virtual partition can be assembled into virtual servers that execute a guest operating system (e.g., Linux). In one example, the abstraction is unique in that any resource is available to any virtual server regardless of the physical boundaries that separate the resources. For example, any number of physical processors or any amount of physical memory can be used by a virtual server even if these resources span different nodes. A virtual computing platform is provided that allows for the creation, deletion, modification, control (e.g., start, stop, suspend, resume) and status (i.e., events) of the virtual servers which execute on the virtual computing platform and the management capability provides controls for these functions. In a particular example, such a platform allows the number and type of virtual resources consumed by a virtual server to be scaled up or down when the virtual server is running. For instance, an administrator may scale a virtual server manually or may define one or more policies that automatically scale a virtual server. Further, using the management API, a virtual server can monitor itself and can scale itself up or down depending on its need for processing, memory and I/O resources. For example, a virtual server may monitor its CPU utilization and invoke controls through the management API to allocate a new processor for itself when its utilization exceeds a specific threshold. Conversely, a virtual server may scale down its processor count when its utilization falls. Policies can be used to execute one or more management controls. More specifically, a management capability is provided that allows policies to be defined using management object's properties, events and/or method results. A management policy may also incorporate external data (e.g., an external event) in its definition. A policy may be triggered, causing the management server or other computing entity to execute an action. An action may utilize one or more management controls. In addition, an action may access external capabilities such as sending notification e-mail or sending a text message to a telephone paging system. Further, management capability controls may be executed using a discrete transaction referred to as a “job.” A series of management controls may be assembled into a job using one or management interfaces. Errors that occur when a job is executed may cause the job to be rolled back, allowing affected virtual servers to return to their original state.
摘要:
A level of abstraction is created between a set of physical processors and a set of virtual multiprocessors to form a virtualized data center. This virtualized data center comprises a set of virtual, isolated systems separated by a boundary referred as a partition. Each of these systems appears as a unique, independent virtual multiprocessor computer capable of running a traditional operating system and its applications. In one embodiment, the system implements this multi-layered abstraction via a group of microkernels, each of which communicates with one or more peer microkernel over a high-speed, low-latency interconnect and forms a distributed virtual machine monitor. Functionally, a virtual data center is provided, including the ability to take a collection of servers and execute a collection of business applications over a compute fabric comprising commodity processors coupled by an interconnect. Processor, memory and I/O are virtualized across this fabric, providing a single system, scalability and manageability. According to one embodiment, this virtualization is transparent to the application, and therefore, applications may be scaled to increasing resource demands without modifying the application.
摘要:
A hand-held electric chain saw including a frame forming a housing with a rear end handle; a motor connected to the frame; a chain bar connected to the frame; a saw chain movably mounted to the chain bar and connected by a drive to the motor; and an extension pole attachment system on a bottom surface of the frame adapted to receive a portion of an extension pole to fixedly attach the extension pole to the bottom surface of the frame. The extension pole includes a pole section having a front end and a rear end; a removable connection system at the front end of the pole section; and an electrical cord. The removable connection system includes a rail adapted to slide into a slot at a bottom of the chain saw to thereby mechanically connect the extension pole to the chain saw.
摘要:
The invention relates to a device for connecting an electronic unit (1) to different types of screen, the device comprising an external connection connector (6) possessing connector elements (10) distributed in a first series for connection to the display members (17, 21) of screens, and a second series for connection to a loudspeaker (18) of a screen of a first type (2) or to the display member (21) of a screen of a second type (3), the device comprising a display line (7) connected to the connector elements of the first series, a sound line (8) connected to a switch member (11) connected to the connector elements of the second series, and a detector element (12) connected to the connector elements of the connector and to the switch member to cause the switch member to take up a connection state when the connected screen is of the first type and a disconnection state when the connected screen is of the second type. The invention also relates to a screen for connection to the device.
摘要:
Systems and methods for streaming of multimedia files over a network are described. A streaming delivery accelerator (SDA) caches content from a content provider and streams the cached content to a user. Cached content is incrementally added to the cache memory, and the SDA is disconnected from the content provider when sufficient content for a predetermined time of play has been received. The caching process can be iterative, with only content not previously retained in the cache requested from the content provider. A method for cache eviction of content no longer of interest to users is also described.
摘要:
A self-contained, fully automated, biological assay-performing apparatus includes a housing; a dispensing platform including a controllably-movable reagent dispensing system, disposed in the housing; a reagent supply component disposed in the housing; a pneumatic manifold removably disposed in the housing in a space shared by the dispensing platform, removably coupled to a fluidic transport layer and a plurality of reservoirs, wherein the fluidic transport layer, the reservoirs, and a test sample to be introduced therein are disposed in the housing in the space separate from the dispensing platform; a pneumatic supply system removably coupled to the pneumatic manifold in the housing in a space separate from the dispensing platform; and a control system coupled to at least one of the dispensing platform and the pneumatic supply system, disposed in the housing.
摘要:
The present invention provides an apparatus and method for solar tracking. The solar tracking sensor array and method so disclosed can be used with any device that requires a specific orientation to the sun for optimal operation. The system relies upon a sun tracking mechanism which includes a plurality of phototransistors configured in a particular manner. The apparatus can further be used with an analog sensor circuit which is also disclosed herein. Although the device and method are disclosed in conjunction with a solar tracking device, which includes the analog sensor circuit, a drive assembly, and a power source, these components may be used independently of one another.
摘要:
The invention relates to a device for connecting an electronic unit (1) to different types of screen, the device comprising an external connection connector (6) possessing connector elements (10) distributed in a first series for connection to the display members (17, 21) of screens, and a second series for connection to a loudspeaker (18) of a screen of a first type (2) or to the display member (21) of a screen of a second type (3), the device comprising a display line (7) connected to the connector elements of the first series, a sound line (8) connected to a switch member (11) connected to the connector elements of the second series, and a detector element (12) connected to the connector elements of the connector and to the switch member to cause the switch member to take up a connection state when the connected screen is of the first type and a disconnection state when the connected screen is of the second type. The invention also relates to a screen for connection to the device.
摘要:
A self-contained, fully automated, biological assay-performing apparatus includes a housing; a dispensing platform including a controllably-movable reagent dispensing system, disposed in the housing; a reagent supply component disposed in the housing; a pneumatic manifold removably disposed in the housing in a space shared by the dispensing platform, removably coupled to a fluidic transport layer and a plurality of reservoirs, wherein the fluidic transport layer, the reservoirs, and a test sample to be introduced therein are disposed in the housing in the space separate from the dispensing platform; a pneumatic supply system removably coupled to the pneumatic manifold in the housing in a space separate from the dispensing platform; and a control system coupled to at least one of the dispensing platform and the pneumatic supply system, disposed in the housing.