Abstract: A method and device are provided for transmitting a digital signal intended for a network having at least four nodes including two transmitters, a relay and a receiver separated from one another by non-orthogonal links, except between the relay and the destination, between which the link is orthogonal, implementing a spatially distributed network code. The method includes: encoding, in each transmitter, supplying a code word for every block of K bits of information; transmitting, in the transmitters, the code word during ?N transmission intervals, ??[0,1]; jointly, iteratively detecting/decoding, in the relay, in order to separate interfering streams from the transmitters and to determine, for each stream, a vector representing the K bits of information associated with the code word; jointly encoding, in the relay, the two vectors in order to determine redundancy information, and scheduling the relays to transmit the redundancy information during the (1??)N following transmission intervals.

Abstract: Systems, methods, and apparatus are provided for iteratively decoding a codeword. Once a codeword is received, the codeword is processed to generate an incremental hard decision value and a log likelihood ratio amplitude value. These values are generated by processing the codeword using a soft output Viterbi algorithm. A faulty symbol in the codeword is identified. A complete hard decision value is generated using the incremental hard decision value. The LLR amplitude value and complete hard decision value corresponding to the identified faulty symbol are selectively provided to a decoder and the decoder uses these values to decode the codeword.

Abstract: A multi processor computing system managing tasks based on the health index of the plurality of processors and the priority of tasks to be scheduled. The method comprise receiving the tasks to be scheduled on the computing system; preparing a queue of the tasks based on a scheduling algorithm; computing a health index value for each processor of the computing system; and scheduling the tasks on processors based on the health index value of the processors. A task from a processor with a lower health index may be moved to an available processor with a higher health index.

Abstract: A test system that enables real-time interactive debugging of a device under test (DUT) using native customer code. A translation module may format, in real time, debug commands, corresponding to a user input, into a format recognizable by instruments in a tester. The user input may be a test program or test instructions written in a high-level programming language. The translation module may translate the user's debug commands into lower-level test instrument commands, based on which the tester may apply control signals to a processor in the DUT to test subsystems of the DUT. A result of the test may be provided to the translation module, which may, in real time, format another debug command, or provide an indication of the result to the user. The translation module may thus enable a user to step-through and modify native customer code in an interactive manner to debug a DUT.

Abstract: A system, method, and computer program product are provided for redirecting internet relay chat (IRC) traffic identified utilizing a port-independent algorithm and controlling IRC based malware. In use, IRC traffic communicated via a network is identified utilizing a port-independent algorithm. Furthermore, the IRC traffic is redirected to a honeypot.

Abstract: Methods and apparatuses for fault detection in a component associated with an application programming interface platform are provided. In an embodiment, the component is determined to have been invoked to process a transaction. A forward progress counter is monitored to determine whether the component is processing the transaction, wherein the forward progress counter increments at determined intervals when the component is processing the transaction. A test transaction is executed for the component when a determination is made that the forward progress counter has not incremented for a threshold fault period. A fault alarm indicator is generated based on the determination that the forward progress counter has not incremented for the threshold fault period.

Abstract: In a computer system, a memory dump of a multi-threaded process can be created to contain information on all the threads without terminating the process, if the process uses user threads.

Abstract: An approach is provided for determining disaster recovery capacity. A simulation hypervisor receives streaming metric data, which represents the current production workload of a primary site, from the primary site. The metric data is combined with production data of the backup site by the simulation hypervisor to simulate a recovery event. Using data from the simulating, disaster recovery planning can be performed.

Abstract: Mechanisms for controlling access to storage volumes on the secondary storage system is provided. A determination is made as to whether a first site computing device has sent a notification of a failure condition of a first site. In response to a determination that the notification of the failure condition of the first site has not been received, secondary workloads of a second site computing device are permitted to access storage volumes on the secondary storage system. In response to a determination that the notification of the failure condition of the first site has been received, a mode of operation of the second site is modified from a normal mode of operation to a failure mode of operation. In the failure mode of operation, the storage system controller of the second site blocks at least a portion of access requests from secondary workloads of the second site computing device.

Abstract: Memory devices adapted to repair single unprogrammable cells during a program operation, and to repair columns containing unprogrammable cells during a subsequent erase operation. Programming of such memory devices includes determining that a single cell is unprogrammable and repairing the single cell, and repairing a column containing the single cell responsive to a subsequent erase operation.

Abstract: Provided are a method and apparatus of performing a HARQ in a multiple carrier system. A receiver determines the size of a soft buffer to be used in an effective HARQ process on the basis of the maximum number of effective HARQ processes over a plurality of component carriers and stores the received transport block in the soft buffer. The present invention enables the performance of a HARQ in an efficient manner by using multiple carriers in the event the size of the soft buffer is limited.

Abstract: A system includes an integrated circuit having a first component and a first unit. The first component is configured to generate a first trace information. The first unit is implemented in hardware and configured to generate a first time information based on a time of the generation of the first trace information and configured to generate a first data sequence including the first trace information and the first time information.

Abstract: Methods and systems for escalating component failures in a cloud are provided. A cloud controller of a cloud receives an indication that a collection of virtual machines of the first cloud has failed based on a collection of virtual machines escalation policy. The cloud controller initiates relocating the collection of virtual machines to a second cloud.

Abstract: Devices, systems and methods for providing a ring topology for physically connecting compute devices having PCIe bridges are disclosed. Each device, having an internal PCIe bus or other similar standard that natively support a tree structure, is connected in a ring to neighboring compute devices. Two physical links connecting each device to the ring are provided, enabling each device to communicate with all of the other devices on the ring, without requiring a server or main host to enumerate or control the flow of information between devices. If a failure occurs in the physical connection at any single point in the ring, there is still an alternate path to communicate with every device. Methods for performing data transfer between PCIe compute devices connected to the ring are also disclosed.

Abstract: A communication system that provides fast and reliable communications. The system is suitable for use in connection with wireless computing devices in which transmission errors may occur because of channel conditions, such as interference. Channel conditions causing transmission errors may be bursty and transient such that the errors temporarily overwhelm an error control code. By combining data received for multiple transmission attempts of a packet that fail error checking or that pass error checking with low reliability, a reliable representation of the packet may be quickly constructed. Though, combining may be omitted when a transmission attempt is received that passes error checking with high reliability.

Abstract: A method and a system are presented for determining the observability of faults in an electronic circuit. In the method, for each element the time periods are determined in which an occurrent fault could cause a deviation in analysis output signals.

Abstract: An electronic device displaying an error recovery process includes an input unit, a display unit, a meta data transmitting unit, and a display control unit. The input unit accepts an operation of a user. The display unit displays an operation screen for the user. The meta data transmitting unit transmits screen image data on the display unit, user operation information input via the input unit, and state information about the electronic device, which are collected upon reception of a meta data acquisition command from a support service terminal apparatus, to the support service terminal apparatus as meta data. The display control unit displays an error recovery process on the display unit on the basis of user support data transmitted from the support service terminal apparatus in response to the transmitted meta data.

Abstract: The supply of power to a storage apparatus can be made redundant by means of power inputs from two types of power supply, namely an AC power supply and a DC power supply. The storage apparatus comprises a power supply unit for supplying power to a plurality of storage devices, and a power supply controller for controlling a method of supplying power from the power supply unit, wherein the power supply unit makes redundant the power supplied from a first power supply device which supplies AC power and/or from a second power supply device which supplies DC power, and supplies this power to the plurality of storage devices, and wherein, in response to an operator configuration input, the power supply controller supplies power from the first power supply device to one storage device among the plurality of storage devices and supplies power from the second power supply device to another storage device.

Abstract: A computer-implemented method for fault recovery in multi-tier applications may include: 1) identifying a plurality of clusters, 2) identifying a multi-tier application that includes a plurality of components, each cluster within the plurality of clusters hosting a component, 3) identifying a fault of a first component within the plurality of components on a first cluster within the plurality of clusters, the fault requiring a first recovery action, 4) identifying at least one dependency relationship involving the first component and a second component within the plurality of components on a second cluster within the plurality of clusters, 5) determining, based on the fault and the dependency relationship, that the second component requires a second recovery action to ensure that the multi-tier application operates correctly, and 6) performing the second recovery action on the second component. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A method for improving replication persistence in a caching appliance structure can begin when a primary catalog service receives a command to instantiate a data partition. The primary catalog service can manage a collective of caching appliances in a networked computing environment. The data partition can include a primary shard and at least one replica shard. The primary shard of the data partition can be stored within a memory space of a first caching appliance. The at least one replica shard of the data partition can be stored within a non-volatile storage space of a second caching appliance. The first and the second caching appliances can be separate physical devices. The memory space of the second caching appliance that could have been used to store the at least one replica shard can be available for storing primary shards for other data partitions, increasing the capacity of the collective.

Abstract: Concepts and technologies are described herein for managing continuous software deployment. A deployment controller can manage deployment of code to a data center. The deployment controller can execute workflows for checking in, verifying, deploying the code, or other processes. The code can be deployed using a differencing disk that includes data indicating changes between software hosted by the data center and a version of software resulting from deployment of the code. The differencing disk can be linked to the disk or virtual resource hosting the software and executed collectively to provide an updated version of the software. Traffic to one or more virtual machines of the data center can be controlled by the deployment controller. If errors are detecting during deployment or after updating, the update can be rolled back.

Abstract: A method for automatic snapshot includes obtaining the amount of data written into a source Logical Unit Number (LUN) and performing increment accumulation; and taking a snapshot when a value of the increment accumulation exceeds the upper limit value. An apparatus for automatic snapshot is disclosed. In one embodiment of the invention, snapshots are taken according to the size of a data variable, only two characterizing parameters, an upper limit value and an increment value need to be added, and the determination logic is clear and concise. Thus, system efficiency or resource overload is not affected, the pertinence is strengthened, the resource usage is increased, and the adaptability is strengthened. Furthermore, stored data may be automatically protected with snapshot, and data safety and reliability are greatly improved.

Abstract: In a system and method for processing network data of a server, the server includes a timer, a switch and a storage system. The server determines whether the storage system includes overtime information of the timer when server is powered on. If the storage system includes the overtime information, the overtime information is deleted. If an operating system is started, a predetermined initial value is written into the timer to start timing, and a first network port and a second network port are disconnected through the switch. If the server works normally, a predetermined reset command is sent to the timer to reset the timer at regular intervals. If the server does not work normally, the first network port and the second network port are connected through the switch. If the timer times out, the overtime information is written into the storage system.

Abstract: Techniques are disclosed for reducing impact of a switch failure in a switch fabric. In one embodiment, a server system is provided that includes a midplane, one or more server cards and one or more switch cards. The midplane may include a fabric interconnect for a switch fabric. The one or more server cards may be coupled with the midplane, where each server card is hot-swappable from the midplane. The one or more switch cards may also be coupled with the midplane, where each switch card is also hot-swappable from the midplane. Each switch card includes one or more switch modules, and each switch module is configured to switch network traffic for at least one server card.

Abstract: A health monitoring technique monitors the health and performance of applications executing in a guest partition in a virtualized environment. In an embodiment, a guest integration component interacts with an application through an application programming interface in order for the virtualization platform to monitor the health and performance of the application. In another embodiment, the guest integration component may include a monitoring agent that accesses an event log and/or a performance monitor log to access the health and performance of the application. The health and performance of the application may then be analyzed by the virtualization platform to determine an appropriate remedial action.

Abstract: In an encrypted wireless system, when a wireless node detects that it is having problems, it may be programmed to transmit one or more diagnostic messages without encryption, or with reduced encryption. The transmitted diagnostic messages may be received and interpreted by a technician troubleshooting the system. Once the technician troubleshoots and repairs the system, the affected wireless node may detect that it is operating normally, and may cease transmitting the unencrypted, or reduced-encryption, diagnostic messages. In most cases, the wireless system does not need any particular input to initiate the unencrypted, or reduced-encryption, diagnostic message transmissions.

Abstract: A method is presented for continuously providing a high precision system clock associated with a processing core, wherein the system clock includes a host clock register that is incremented via a high precision oscillator, the method includes: providing a firmware clock register, incrementing the firmware clock register based on the host clock register being incremented, monitoring for failures of the host clock register, and during a failure of the host clock register continuously incrementing the firmware clock register by means of timing signals of the processing core, and upon receipt of a request to provide a clock value, providing the content of the host clock register if no failure was detected, or if failure was detected, providing the content of the firmware clock register.

Abstract: A method and system self-supportable devices and applications are provided. The method and system in one embodiment allows devices and applications to automatically communicate and service themselves, for example, by checking knowledgebase services and other services for instructions on how to handle an exception. In another embodiment, the devices and applications automatically initiate actions needed to handle the exception.

Abstract: In certain embodiments, a service provided by a production server is facilitated. The production server is associated with a backup server configured to take over if the production server fails. The production server assigned a first identifier. A failover with a potential identity conflict is determined to have occurred. In the failover, the backup server has taken over for the production server and has been assigned the first identifier. A second identifier is assigned to the production server to replace the first identifier that was assigned to the production server in order to avoid the identity conflict.

Abstract: Methods for operating a management system that manages a large number of first function modules and second function modules. An inhibitor module I sets first control statuses to designating blocking when associated events are detected by an event detecting device, and then the management system no longer makes associated first function modules available for execution. The inhibitor module I sets second control statuses to designating executable when associated events are detected by an event detecting device, and then the management system makes associated second function modules available for execution.

Abstract: A game apparatus as an information processing apparatus includes a CPU, and the CPU generates data for generation from information specific to the game apparatus and random numbers, and calculates hash value data by using the data for generation. On the other hand, the CPU extracts the apparatus-specific information from the taken data for generation, and determines whether it is correct or not. In a case that it is determined that the apparatus-specific information is correct, hash value data is calculated by using the taken data for generation. Then, the CPU executes game processing regarding the hash value data as a parameter in a case that the taken hash value data and the calculated hash value data are coincident with each other. In a case that the apparatus-specific information is not correct or in a case that the two hash value data is not coincident with each other, the communication game is not started.

Abstract: Various embodiments of systems and methods for executing a customized business process in a business process framework are described herein. A user selection of a solution type corresponding to a business process is received from a user interface. In response to the user selection, a query is executed to retrieve application types and corresponding sub-application types from a business logic stored in a database. Configurable attributes are generated based upon the application types and the corresponding sub-application types. Based upon the application types, the sub-application types and the configurable attributes, the business process is customized to create a customized business process. Based upon a configuration information, a user input to the customized business process is captured from the user interface. The user input is validated by comparing the user input with the business logic. The customized business process that is validated is further executed in the business process framework.

Abstract: A system and method for mitigating memory errors in a computer system. Faulty memory is identified and tested by a memory manager of an operating system. The memory manager may perform diagnostic tests while the operating system is executing on the computer system. Regions of memory that are being used by software components of the computer system may also be tested. The memory manager maintains a stored information about faulty memory regions. Regions are added to the stored information when they are determined to be faulty by a diagnostic test tool. Memory regions are allocated to software components by the memory manager after checking the stored information about faulty memory regions. This ensures a faulty memory region is never allocated to a software component of the computer system.

Abstract: Fault tolerance is provided in a distributed system. The complexity of replicas and rollback requests are avoided; instead, a local failure in a component of a distributed system is tolerated. The local failure is tolerated by storing state related to a requested operation on the component, persisting that stored state in a data store, such as a relational database, asynchronously processing the operation request, and if a failure occurs, restarting the component using the stored state from the data store.

Abstract: Provided is an optical disk reproduction apparatus capable of preventing information that is different from the original sub information from being subjected to error correction erroneously, and of stably reproducing the sub information. The optical disk reproduction apparatus (1) has an optical head (301) for reading a reproduction signal including main information and sub information based on a recording mark formed on an optical disk (300), a main information extraction unit (4) for extracting the main information from the reproduction signal, and a sub information extraction unit (2) for extracting the sub information from the reproduction signal.

Abstract: Embodiments include a method of communicating an audio stream from an audio source terminal to a plurality of speaker terminals. A broadcast channel is established for communication from an audio source terminal to a plurality of speaker terminals. A plurality of bidirectional point-to-point control channels are established for controlling wireless communications between the audio source terminal and the speaker terminals, where each of the point-to-point control channels interconnect the audio source terminal and a different one of the speaker terminals. An audio stream is transmitted as a sequence of blocks of audio data in messages from the audio source terminal through the broadcast channel for receipt by all of the speaker terminals. A quality of reception feedback message is received at the audio source terminal from individual ones of the speaker terminals through respective ones of the point-to-point control channels.

Abstract: Provided are techniques for determining a recovery time for a resource in a heterogeneous computing environment comprising interdependent resources. A graph for the resource representing all sequence dependencies and all group relations are created. The recovery time may be a cumulative startup time or a cumulative shutdown time of the resource considering interdependencies of the resource to other resources. The recovery time for all support resources having sequence dependencies with the resource is calculated and each node representing the support resources are removed from the graph. Then the recovery time for all member resources left in the graph that have group relations with the resource is calculated per a group type of the resource. The recovery time for the resource is a sum of the recovery time of all support resources, the recovery time of all member resources, and a unit recovery time of the resource.

Abstract: The invention provides a power supply system for a data storage system, the power supply system comprising: a first power supply unit for supplying power to the storage system; a second power supply unit independent from the first power supply unit for supplying power to the storage system; an auxiliary power supply; a power redundancy controller, arranged to monitor the region of an efficiency curve within which the first and/or second power supplies are operating in and control the first and second power supplies accordingly such that the either or both of the first and second power supplies are providing power at any one time, wherein in the event of failure of a power supply unit when only one of the power supply units is operating, the power redundancy controller is arranged to provide power supply to the data storage system from the auxiliary power supply.

Abstract: Provided are a booting method of updating software components installed in a system and recovering from an error that occurs in an update, a method and system for automatically updating the software and recovering from the error, and a computer readable recording medium storing the method. The master boot record and the backup boot record are used to stably update a kernel and effectively recover from an update error. The component configuration database is used to update a plurality of software components including a kernel in a transaction, and perfectly recover from an update error.

Abstract: A system for providing network element protection includes a backup network element (101) having a first configuration table storing first configuration data, an active network element (102) having a second configuration table storing second configuration data, and a controller (117) arranged to update the first configuration data according to changes of the second configuration data. The controller is arranged to carry out the updating when the active network element operates according to the second configuration data as a part of a data transfer network (100). Hence, the configuration data of the backup network element is maintained and managed as if backup network element were actively in use.

Abstract: A method, system and computer program for processing invalid data. Data is received at a shared component for processing. A shared component is a component that is capable of being shared by multiple entities. The shared component has a plurality of threads. An attempt is made to process the data using one of the threads from the plurality of threads. The data is invalid and therefore the attempt at processing the invalid data results in the shared component and its plurality of threads failing. In response to the failure of the shared component, at least two instances of the shared component are created. At least one thread is assigned to each component instance, where the number of threads assigned to each component instance is restricted to a maximum number that is less than the original number of the plurality of threads.

Abstract: An application control engine computing platform having a shut-down mechanism that permits the platform to adequately start up and operate upon return of power after a power interruption, without a need of a battery pack. The mechanism may target the saving of control object runtime values and operational settings of those objects, rather than the saving of the complete set of objects, and all unsaved alarm and history records upon a power interruption.

Abstract: A social network of service provider and service recipient teams, which in turn is analyzed from a global perspective of the provider organization, that is, the representation and analysis and recommendations are internally driven by a service provider organization. Informal and formal relationships alike can be noted in the network representation. The nodes in the networks are team members from the provider and client organizations. The key decision makers in the client organizations are marked out in the graph. Each client node has an orientation which reflects whether the person has a positive orientation or negative orientation overall, globally and at a current point in time, towards the service provider organization. The client organization and the internal relationships can initially be assumed to be embodied by formal and functional relationships that are already well known and established, and yet can be adapted at later times.

Abstract: An exemplary method includes a message broker subsystem receiving a message intended for delivery to a recipient software application instance, determining that the recipient software application instance is included in a plurality of functionally equivalent software application instances that are registered with a global directory service subsystem that is communicatively coupled to the message broker subsystem, automatically selecting a software application instance from the plurality of software application instances for receipt of the message in accordance with a load balancing heuristic, and attempting to deliver the message to the selected software application instance. Corresponding methods and systems are also described.

Abstract: Example embodiments relate to initiation of storage device scans based on a record of existing scans of the storage device. In particular, example embodiments include a mechanism that maintains a record of existing scans of the storage device including an entry for each scan initiated by one of a plurality of scanning processes. In some embodiments, the record of existing scans may then be accessed in determining whether to initiate or permit initiation of a new scan.

Abstract: A test system tests a full system integrated circuit (IC) model that includes a device under test (DUT) IC model and a support IC model. A test manager information handling system (IHS) maps the full system IC model on a hardware accelerator simulator via an interface bus. The hardware accelerator simulator thus emulates the full system IC model. Of all possible fault injection points in the model, the test manager IHS selects a subset of those injection points for fault injection via a statistical sampling method in one embodiment. In response to commands from the test manager IHS, the simulator serially injects faults into the selected fault injection points. The test manager IHS stores results for respective fault injections at the selected injection points. If a machine checkstop or silent data corruption error occurs as a result of an injected fault, the DUT IC model may return to a stored checkpoint and resume operation from the stored checkpoint.

Abstract: A host controller is coupled to host computers that host virtual machines. At least one of the virtual machines is a highly available virtual machine. The host controller detects a change in system resources and identifies a highly available virtual machine that failed before the change occurs. The host controller re-runs the highly available virtual machine upon detection of the change of the system resources.

Abstract: Shifts in the apparent charge stored on a floating gate (or other charge storing element) of a non-volatile memory cell can occur because of the coupling of an electric field based on the charge stored in adjacent floating gates (or other adjacent charge storing elements). The problem occurs most pronouncedly between sets of adjacent memory cells that have been programmed at different times. To account for this coupling, the read process for a particular memory cell will provide compensation to an adjacent memory cell in order to reduce the coupling effect that the adjacent memory cell has on the particular memory cell.

Abstract: A Flash-based memory system comprises a plurality of Flash memory devices, a Flash controller communicating independently with each Flash memory device to perform memory operations, a power circuit providing power the Flash memory devices, and a CPU configured to perform a controlled powering down procedure upon detecting a power failure. In some embodiments, the Flash-based memory system includes a backup power source having a charge storage device and charging circuitry, the CPU configured to perform one or more test procedures on the charge storage device to provide an indication of a charge storage capacity of the charge storage device. A plurality of Flash-based memory systems may be mounted on a Flash-based memory card, and multiple such Flash-based memory cards may be combined into a Flash-based memory module. A number of Flash-based memory modules may then be removably mounted in a rack-mountable housing to form unitary Flash-based memory unit.

Abstract: Mechanisms for aggressively optimizing computer code are provided. With these mechanisms, a compiler determines an optimization to apply to a portion of source code and determines if the optimization as applied to the portion of source code will result in unsafe optimized code that introduces a new source of exceptions being generated by the optimized code. In response to a determination that the optimization is an unsafe optimization, the compiler generates an aggressively compiled code version, in which the unsafe optimization is applied, and a conservatively compiled code version in which the unsafe optimization is not applied. The compiler stores both versions and provides them for execution. Mechanisms are provided for switching between these versions during execution in the event of a failure of the aggressively compiled code version. Moreover, predictive mechanisms are provided for predicting whether such a failure is likely.