33results about How to "Reduce load imbalance" patented technology

Apparatus and methods for reconfiguration of a communication environment based on loading requirements. Network operations are monitored and analyzed to determine loading balance across the network or a portion thereof. Where warranted, the network is reconfigured to balance the load across multiple network entities. For example, in a cellular-type of network, traffic loads and throughput requirements are analyzed for the access points and their user equipment. Where loading imbalances occur, the cell coverage areas of one or more access points can be reconfigured to alleviate bottlenecks or improve balancing.

Systems and methods for implementing per-session load balancing of packets that increase traffic sharing and reduce systematic unequal distribution of traffic are provided by virtue of one embodiment of the present invention. A method for operating a selected router is provided that uses a load balancing algorithm that is configured to de-correlate distribution of sessions among the active paths at the selected router relative to distributions of sessions of other algorithms at other routers of said network. Packets arriving at the selected router are assigned to an output path according to the load balancing algorithm. A method of routing a packet received at a router having an associated identifier is provided. The source address and a destination address of the packet are obtained. An output path is selected according to a load balancing algorithm that uses the associated identifier, the source address, and the destination address as inputs, and the packet is routed to the output interface associated with the selected output path. A look-up table that is configured using the identifier can be used in selecting the output path. A router storing an identifier assigned to the router is provided; the identifier is used in determining per-session routing of incoming packets.

The invention discloses a railway photovoltaic energy storing system and control method for regenerative braking energy recovery. Real-time online detection and processing are carried out on all kindsof running data of a photovoltaic side, traction side and energy storing side, a comprehensive judgement is carried out on running conditions based on a calculation result, control schemes under multiple scenes are selected through a judging result, an energy storing unit is taken as an energy transferring station, the coordinated control of a back-to-back converter, photovoltaic power generationunit and energy storing unit is achieved, and the electric energy elective exchange under the multiple scenes is completed. The system and method are conductive for photovoltaic power energy nearby consumption and railway system green development, can effectively recover the regenerative braking energy of haulage motors and the photovoltaic power energy which cannot be consumed, increases systemeconomic benefits, stabilizes photovoltaic side output and power energy fluctuation of the traction side under the regenerative braking conditions, and compensates for negative sequence functions of atraction power supply system.

Apparatus and methods for reconfiguration of a communication environment based on loading requirements. Network operations are monitored and analyzed to determine loading balance across the network or a portion thereof. Where warranted, the network is reconfigured to balance the load across multiple network entities. For example, in a cellular-type of network, traffic loads and throughput requirements are analyzed for the access points and their user equipment. Where loading imbalances occur, the cell coverage areas of one or more access points can be reconfigured to alleviate bottlenecks or improve balancing.

The invention belongs to the technical field of parallel algorithm, and particularly discloses an image / video feature extraction parallel algorithm based on a multi-core system structure. The image / video feature extraction parallel algorithm combines the task level parallel technology with the pipeline level parallel technology to realize feature extraction. Process image or video frame data are divided into a plurality of sub-domains by the task level parallel technology, and the data of the sub-domains are distributed to different processing units of multi-core hardware to be processed simultaneously; and execution of the feature extraction algorithm is divided into a plurality of processing stages by the pipeline level parallel technology, the data are transmitted among various stages in a stream form, and feature extraction of image / video frames is completed. The characteristics of the two technologies are combined, so that performances of the image / video feature extraction parallel algorithm are improved. In addition, real-time processing speed of 42 frames per second is realized on a universal multi-core processor by the aid of the feature extraction algorithm aiming at image / video retrieval.

The invention discloses an implementing method for load balancing, applied to a storage system with a plurality of storage control appliances. In the method, the storage control appliances acquire the load connection number of themselves and load connection number of the remote side; the remote side is any one of the other storage controllers in the storage system; the storage control appliances judge whether the difference of the load connection number of themselves and load connection number of the remote side is greater than or equal to the preset threshold, if so, migrating part of the self load connection into other storage control appliances in the storage system, so as to make the difference of the load connection number of themselves and load connection number of the remote side after migrating is less than the preset threshold. The present invention also discloses a storage control appliance and a storage system. Use of the invention can achieve dynamic load balancing.

The present invention relates to switching power supply and is circuit for reducing unbalance of multi-output power source loads. The technological scheme includes the positive pole of input voltage,L1, transformer primary side, MOSFET and the negative pole of input voltage constitute one serial loop; C1 is connected across the joint of L1 and transformer primary side and input voltage negative pole; MOSFET has its drain connected serially with the transformer and source connected to input voltage negative pole and C1 is connected to the input voltage negative pole; two transformer secondarywindings separates the output circuit into two braches, I and II; and the control circuit has input from the output of branch I and produces drive puls as the drive signal of MOSFET in transformer primary side and connected to the grid of MOSFET.

A system having a plurality of network devices, each including: an interface module including a plurality of physical ports to transmit and receive packets; a computing module configured to execute a computing process with a computational expression using seed information, the seed information including at least one of destination information and source information associated with a received packet; a destination search module configured to, based on the result of the computation, select a physical port for transmission of the received packet from a plurality of candidate ports among the plurality of physical ports; and a modifying module configured to modify the computational expression, wherein the plurality of network devices include preceding-stage and subsequent-stage network devices, the subsequent-stage network device being directly coupled to the preceding-stage network device with physical wiring, and wherein the subsequent-stage and preceding-stage network devices are configured to use different expressions in the computing process.

The invention discloses a multiple parallel method based on a characteristic line method. After radial MOC inhomogeneous calculation is carried out on each layer of a core of a reactor, the layering homogenization cross section of a lattice cell is obtained in a homogenization mode, three-dimensional transportation calculation is carried out, and then an axial leakage item for radial MOC inhomogeneous calculation is updated until iterative convergence is achieved. By means of the mode of analyzing the effects of the parallel efficiency of space, the parallel efficiency of angles and the parallel efficiency of characteristic lines on the total parallel efficiency at the same time, a multiple parallel optimization scheme is determined.

The embodiment of the invention provides a cloud disk allocation method and device, electronic equipment and a storage medium, and relates to the technical field of artificial intelligence and cloud storage. The method comprises the steps of determining a feature value of a load feature based on a feature value of a cloud disk request feature contained in a cloud disk allocation request; and basedon the feature value of the cloud disk request feature and the feature value of the load feature, determining a target storage warehouse from candidate storage warehouses, and further determining a storage space matched with the cloud disk allocation request from the target storage warehouse as a target cloud disk. The target cloud disk is finally determined based on the feature value of the cloud disk request feature and the feature value of the load feature, relative balanced distribution of cloud disks is achieved from multiple dimensions, the problem that loads of all storage warehouses in a cloud block storage system are unbalanced is solved, the risk of resource overload of the storage warehouses is reduced, and the resource utilization rate of the cloud block storage system is increased.

The invention discloses a bilateral power supply method for an electrified railway and relates to the technical field of AC electrified railway power supply. The railway power supply system used in this method is composed of traction substations and the traction network and partitions between them. The traction substations are composed of traction transformers and voltage compensation devices. Network Unicom constitutes a bilateral power supply; through the optical fiber communication voltage compensation device, the feeder voltage of the adjacent traction station and the feeder voltage of the station can be obtained in real time. The feeder voltage phase is used to reduce the voltage phase difference with the adjacent traction station, thus reducing or even eliminating the balanced current generated in the traction network caused by the parallel connection of the traction power supply system and the power system.

The invention relates to heat engineering, power engineering and the field of electric heating of liquids, water for instance; it can be used in circulation water heating systems and hot water supply, and as a universal device for diverse electric heaters. An object of the invention are to enhance the ease of fabrication, fabricability, and operability for block electrodes and electrode heating boilers on the whole, to increase the reliability of device both in static and dynamic modes ones. The invention meets an object of extended performance capabilities, versatility and flexibility of the device, potential diversification and enhancement of adaptability in solving particular problems. Moreover, the invention allows improvement of convection in water heating boilers and reduction of uniformity of sludge and rust deposition on electrodes thus increasing the heater effective performance time. The invention object comprises an improvement of protection against breakdowns between the electrodes as well, phase current load imbalance reduction, electrode protection against non-uniform deformation during operation in dynamic conditions. It is also an object of the invention to extend i the range of constructional capacity control without design and dimensional changes. FIG. 2 provides a schematic of electrodes (1) arrangement on the basis (3) located on the inner case (2) side with electrodes (1) slightly deviating from the longitudinal symmetric axis of the case (2) and irregularly spaced on the basis, electrode longitudinal axes deviating from each other at small angles. (4)—outer electrode terminals (1).

An adaptive contention-aware thread scheduler may place software threads for pairs of applications on the same socket of a multi-socket machine for execution in parallel. Initial placements may be based on profile data that characterizes the machine and its behavior when multiple applications execute on the same socket. The profile data may be collected during execution of other applications. It may identify performance counters within the cores of the processor sockets whose values are suitable for predicting whether the performance of a pair of applications will suffer when executed together on the same socket (e.g., values indicative of their demands for particular shared resources). During execution, the scheduler may examine the performance counters (or performance metrics derived therefrom) and determine different placement decisions (e.g., placing an application with high demand for resources of one type together with an application with low demand for those resources).

A runtime system for distributing work between multiple threads in multi-socket shared memory machines that may support fine-grained scheduling of parallel loops. The runtime system may implement a request combining technique in which a representative thread requests work on behalf of other threads. The request combining technique may be asynchronous; a thread may execute work while waiting to obtain additional work via the request combining technique. Loops can be nested within one another, and the runtime system may provide control over the way in which hardware contexts are allocated to the loops at the different levels. An “inside out” approach may be used for nested loops in which a loop indicates how many levels are nested inside it, rather than a conventional “outside in” approach to nesting.

The invention discloses a magnetically-controlled static var compensator, which mainly solves the defects that in the prior art, the existing reactive compensation is stepped and low in accuracy, and cannot provide inductive reactive power or capacitive reactive power synchronously; the switching operation is frequent; the higher requirements of the electrical power system and users cannot be met. The magnetically-controlled static var compensator comprises a digital signal processor, a power supply, a capacitor bank or a filter bank, a keyboard, a liquid crystal displayer, a programmable logic controller, a reactive compensation unit, CSR (Controllable Shunt Reactors), and an AD (Analog-to-Digital) sampling circuit, wherein the output ends of the power supply, the capacitor bank or the filter bank and the keyboard are all connected with the digital signal processor; the input ends of the liquid crystal displayer, the programmable logic controller and the reactive compensator are all connected with the digital signal processor; the controllable shunt reactors are connected with the reactive compensation unit and the programmable logic controller; the input end of the AD sampling circuit is connected with the controllable shunt reactors, while the output end is connected with the digital signal processor. By virtue of the scheme, the magnetically-controlled static var compensator can reach the target of high cost performance and meet the actual demand, and is of high practical value and promotion value.

The invention discloses a user-base station bidirectional matching access method in a lift-off wireless network. The method comprises the following steps: initializing a non-accessed user set; calculating the satisfaction degree of any user to each lift-off base station; selecting a lift-off base station with the highest satisfaction degree; enabling the lift-off base station to determine whether to allow user access according to the revenue function; and if so, respectively updating the access user set and the non-access user set, and outputting a user access optimization result when the non-access user set is empty. Through two-way selection of the user and the base station, the problems of multi-user interference and load balancing faced by a traditional user access method are solved, and the user service quality is improved.

A parallel acceleration implementation method for N-body simulation in a heterogeneous architecture comprises the steps that a buffer area is updated after initialization, and after information transmission between a CPU memory and a GPU video memory, short-distance force between particles is calculated through a GPU in sequence by means of a bucket algorithm, and a result is returned to a CPU end; calculating long-range force and acceleration among the particles through the CPU, updating the speed of the particles, finally updating the speed information of the particles in the buffer area, and ending simulation when conditions are met; according to the method, the functions of main program calculation, data reading, data output and the like are carried out at the CPU end, hotspot function calculation in the program is carried out at the GPU end, force among particles is divided into short-range force and long-range force based on a particle-grid algorithm, and rapid calculation is realized by utilizing the calculation power and architecture characteristics of the CPU and the GPU.

A multiple parallel method based on the characteristic line method. After the non-uniform calculation of the radial MOC for each layer of the reactor core, the homogenization is obtained to obtain the layered and uniform cross-section of the cell, and the three-dimensional transport calculation is performed, and then the radial MOC is updated. The axial leakage item of the non-uniform calculation until iterative convergence; the method of the present invention simultaneously analyzes the influence mode of the respective parallel efficiency of space, angle and characteristic line on the total parallel efficiency, and determines multiple parallel optimization schemes.

A method for efficient use of a computing system of parallel processors to perform inversion of geophysical data, or joint inversion of two or more data types. The method includes assigning at least one control processor to control sequence of operations and reduce load imbalance, assigning a group of one or more processors dedicated to updating one or more model parameters, and assigning another group of one or more processors dedicated to forward modeling simulated data.

The invention discloses a flexible neutral section passing device for an electrified railway and a control method. Relates to the technical field of electrified railway traction power supply. Alternating-current ports are bridged among an alpha-phase power supply arm circuit, a beta-phase power supply arm circuit and an N neutral line circuit at the electric split-phase position of a traction power supply system, direct-current ports are arranged in the device and can be selectively connected with a direct-current source according to needs, and bidirectional circulation and ordered transfer of energy can be carried out among the ports and interconnection lines of the ports. And multi-end and multi-direction power fusion is realized. According to the control method, a power supply section of an electric split-phase position is divided into a plurality of state intervals, and different train operation positions correspond to different device control schemes.

The piezoelectric effect-based triaxial active shock absorber comprises an actuator, a load substrate and a shock absorber base, the load substrate is provided with a notch, the shock absorber base is provided with a through hole, and the actuator is embedded in the notch of the load substrate and penetrates out of the through hole of the shock absorber base; wherein the actuators comprise radial actuators and axial actuators, and the radial actuators are arranged in the X-axis direction and the Y-axis direction and used for active vibration reduction in the X-axis direction and the Y-axis direction correspondingly; the axial actuator is arranged in the Z-axis direction and used for active vibration reduction in the Z-axis direction. According to the tri-axial active shock absorber based on the piezoelectric effect and the system thereof, active shock absorption in three axial directions can be achieved, the tri-axial active shock absorber has the advantages of being small in size, high in integration degree, good in stability and the like, meanwhile, the tri-axial active shock absorber integrates and has the passive shock absorption capacity, the shock absorption frequency band is wider, and practical engineering application is better facilitated.

The invention discloses a traffic monitoring video storing method in an HDFS based on event intensity. The traffic monitoring video storing method is characterized by comprising the following steps that an intelligent camera obtains traffic monitoring data, detects traffic events and sends traffic video streaming data and event type description information included in the data to a video server; the video server encodes and segments the video data after receiving the video streaming data sent by the camera, a video file is generated, and the file is marked with the event type according to the event description information of the video data; the video data are uploaded to the HDFS; after receiving a data storage request, a Name Node in the HDFS calls a data placement strategy based on the event intensity to select a target data node for the data file to be stored; the file is stored in the target data node selected in the third step. The problem of node load unbalance caused when the HDFS stores mass traffic monitoring videos can be solved, and accordingly, the traffic monitoring data can be efficiently stored.

The service distribution method and the base station provided by the present invention use the base station to obtain the preset ANDSF policy, AP load information and UE service type information, and then according to the preset ANDSF policy, AP load information, UE service type information and the base station The 3GPP network load information recorded in the 3GPP network determines the offloading decision, and sends it to the UE, so that the UE can offload the service to the 3GPP network or to the WLAN according to the offloading decision, which can overcome the problem that the existing technology cannot be based on the load on the network side. The technical defect of offloading the service being used by the UE. The offloading method can select an optimal offloading network for services performed on the UE according to load information in each network, thereby reducing unbalanced network loads and improving user service experience.