168results about How to "Impact performance" patented technology

System and methods for cache coherence in a multi-core processing environment having a local/shared cache hierarchy. The system includes multiple processor cores, a main memory, and a local cache memory associated with each core for storing cache lines accessible only by the associated core. Cache lines are classified as either private or shared. A shared cache memory is coupled to the local cache memories and main memory for storing cache lines. The cores follow a write-back to the local memory for private cache lines, and a write-through to the shared memory for shared cache lines. Shared cache lines in local cache memory enter a transient dirty state when written by the core. Shared cache lines transition from a transient dirty to a valid state with a self-initiated write-through to the shared memory. The write-through to shared memory can include only data that was modified in the transient dirty state.

The present invention is directed to system for and methods of real time observing, monitoring, and detecting anomalies in programs' behavior at instruction level. The hardware assist design in this invention provides fine grained observability, and controllability. Fine grained observability provides unprecedented opportunity for detecting anomaly. Controllability provides a powerful tool for stopping anomaly, repairing the kernel and restoring the state of processing. The performance improvement over pure software approach is estimated to be many orders of magnitudes. This invention is also effective and efficient in detecting mutating computer viruses, where normal, signature based, virus detection is under performing.

In a 3G cellular network, a Reverse Link Channel Quality Indicator Channel (R-CQICH) may be transmitted on a reverse link to support forward link high-speed data transmissions. Accordingly, the R-CQICH may be utilized to track the quality of the signal path between the wireless unit and the base station. The base station may include a CQI component that utilizes a received Channel Quality Indicator (CQI) signal from the wireless unit to generate CQI quality metrics based on the quality of the received signal. Also, the CQI quality metrics may be compared to different thresholds to adjust various system configurations in the base station. The base station may also provide feedback to the wireless unit with the updated system configurations. This technique allows CQI quality metrics to be utilized to adjust system configurations dynamically and enhance the operation of a wireless system.

Fused silica members having high internal transmission and low birefringence are disclosed. Methods of making such fused silica members are also disclosed. According to the present invention, fused silica members having an internal transmission equal to or greater than 99.65%/cm at 193 nm and having an absolute maximum birefringence along the use axis of less than or equal to 0.75 nm/cm are provided.

A golf club is provided in which, whether the loft angle is small or large, backspin is reduced and there is no decrease in carry. A golf club construction is obtained wherein, in a driver club head (1) comprising a face section 4 having a striking surface, a sole section (3) forming the bottom, a crown section (2) forming the top and a back section (3a) forming the back portion, when the loft angle is small, the amount of backspin is reduced and performance is maintained, and even when the loft angle is large, the amount of backspin is reduced and a good carry distance is achieved. For this purpose, the crown section (2) is improved, with the provision of a weight (8) on the inside surface thereof nearer to the face section than the center of the surface

Time lapse, characteristic of aging, is a complex process that affects the reliability and security of biometric face recognition systems. Systems and methods use deep learning, in general, and convolutional neural networks (CNN), in particular, for automatic rather than hand-crafted feature extraction for robust face recognition across time lapse. A CNN architecture using the VGG-Face deep (neural network) learning produces highly discriminative and interoperable features that are robust to aging variations even across a mix of biometric datasets. The features extracted show high inter-class and low intra-class variability leading to low generalization errors on aging datasets using ensembles of subspace discriminant classifiers.

A thread dispatch mechanism dispatches threads in a multiprocessor computer system that has hardware multithreading enabled, thereby allowing each processor to execute multiple threads. The thread dispatch mechanism determines which processors are busy and cannot execute an additional thread, which processors are working on a thread but can still accept an additional thread, and which processors are idle. As threads are ready to be dispatched, each is dispatched to an idle processor instead of a processor that is already working on another thread. If there are no idle processors, the thread is dispatched to a processor working on one or more threads that can still process the new thread. In this manner the thread dispatch mechanism and method of the present invention provides greatly improved consistency in response times between threads and higher throughput compared to prior art methods of dispatching threads.

An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.

A method and apparatus are provided for generating a document preview. According to the method, a preview handler provides an interface to one or more previewers. The previewers are software components capable of generating a visual preview for one or more document types. In response to a request from a host application to generate a preview for a document, the preview handler is operative to identify the appropriate previewer for generating a preview for the document. The preview handler may then call the previewer and instruct the previewer to load the document and to show the preview in a sub-window of a window provided by the calling host application.

Nitrogen is removed from a liquefied natural gas feed (41) by a two stage separation in which the liquefied natural gas (41) is first fractionated (23) to provide a first nitrogen-enriched overhead vapour stream (46) and a nitrogen-containing bottoms liquid stream (19) and then at least a portion of said bottoms liquid stream (19) is fractionated (25) to provide a second nitrogen-enriched overhead vapour stream (36) that is of lower purity than said first overhead vapour stream (46) and a purified liquefied natural gas stream (50). The first fractionation is conducted in a distillation column (23) refluxed (45) with nitrogen overhead (43) condensed in a condenser (24) located in a flash drum (25) in which the second fractionation is conducted. The second nitrogen-enriched overhead vapour stream (36) provides fuel gas for use in the natural gas liquefaction plant.

A non-volatile memory device including a cell array, which includes a plurality of memory cells, and a sense amplification circuit. The sense amplification circuit is configured to receive a data voltage of a memory cell, a first reference voltage and a second reference voltage during a data read operation of the memory cell, generate differential output signals based on a voltage level difference between the data voltage and the first and second reference voltages, and output the differential output signals as data read from the memory cell.

A mitigation enablement module for a computer that improves application reliability. When performing memory management operations, the mitigation enablement module and associated memory manager selectively use mitigations that are intended to prevent an application bug from cause an application error. The memory manager may selectively apply mitigations for each of one or more applications based on the likelihood that such mitigations are successful at preventing bugs from causing application errors. The likelihood is determined from historical information on whether the mitigations, when applied, prevented bugs from causing memory operations that could cause application errors. This historical information can be gathered on a single computer over multiple invocations of the application or may be aggregated from multiple computers, each invoking the application. The determined likelihood may then be used to determine whether or for how long to apply the mitigation actions for memory operations requested by the application.

A reduced complexity Turbo multi-user detector (MUD) processing system in multiple access communications channels that decreases the likelihood of improper decoding of the final values of interest and decreases the computation complexity for each iteration, thereby allowing for a reduction in the number of iterations performed and lowers the overall complexity without negatively impacting performance. In one form the present invention comprises a multi-user detector coupled to two or more decoder sections, two ore more recoders, and a compare and adjust section in such a manner that data flows iteratively to correct for errors in a computationally efficient manner.

A fault tolerant method transforms physically contiguous data in-place on a disk by partitioning the physically contiguous data into an empty region physically adjacent to data regions including a first data region and a last data region, the first and last data regions at opposing ends of the physically contiguous data regions. The physically contiguous data are transformed in an order beginning with the first data region and ending with the last data region. The transforming step perform first locking and reading the first data region, second, transforming the first data region, third, writing and unlocking the transformed first data region to the empty region, and fourth, declaring the first data region as the empty region while declaring the empty region as the first region. The first through fourth steps are repeated for each data region, until completion, to transform the physically contiguous data in-place on the disk.

Machine learning-based methods and systems for automated object defect classification and adaptive, real-time control of manufacturing processes are described.

The present invention is a dual-stage fuel injection strategy for compression ignition engines in which 15-40% of the fuel is injected into the combustion chamber no later than about −20 to −30 CA ATDC and as early as IVC. The rest of the fuel is then injected in one or more fuel pulses, none of which start before about −20 to −30 CA ATDC. The fuel injected early in the compression stroke forms a lean mixture that burns with low soot and low NOx emissions. The combustion of that fuel serves to increase in-cylinder temperature such that the ignition delay of subsequent fuel injection pulses is short. This mode is utilized when it is predicted that a NOx spike is imminent. Various other alternative methods for reducing NOx spikes are also disclosed such as specialized EGR systems that can provide EGR with low manifold vacuum.

A coherency resolution technique enables efficient resolution of data coherency for packet data associated with a service queue of an intermediate network node. The packet data is enqueued on a write buffer prior to being stored on an external packet memory of a packet memory system. The packet data may be interspersed among other packets of data from different service queues, wherein the packets are of differing sizes. In response to a read request for the packet data, a coherency operation is performed by coherency resolution logic on the data in the write buffer to determine if any of its enqueued data can be used to service the request.

Transaction identifier expansion circuitry is provided, along with a method of operating such circuitry. The transaction identifier expansion circuitry interfaces between a master device and interconnect circuitry used to couple the master device with a plurality of slave devices to enable transactions to be performed. Transaction analysis circuitry is responsive to each transaction in a sequence of transactions initiated by the master device, to compare at least one attribute of the transaction with predetermined attributes indicative of the target slave device for that transaction. Based on the comparison, an initial transaction identifier is then mapped to one of a plurality of revised transaction identifiers, such that the revised transaction identifier is dependent on the target slave device. Reordering circuitry is then arranged to buffer response transfers received from the interconnect circuitry destined for the master device, with each response transfer having the revised transaction identifier associated therewith. The reordering circuitry then re-orders the response transfers having regard to the original transaction order of those transactions within the sequence of transactions that had the same initial transaction identifier, prior to provision of each response transfer to the master device. By such an approach, the performance of a high performance master device can be maintained, by ensuring that for at least the transactions targeted to a particular subset of the slave devices, no intervention by deadlock avoidance circuitry within the interconnect is required when routing transactions to those slave devices, due to the use of different transaction identifiers when accessing those slave devices.

A method and system for determining code coverage of one or more software modules is disclosed. The disclosed method and system uses an enumeration module, a code coverage module and an analysis module. The enumeration module is used to identify portions of the code in the software module for which code coverage data is desired. The code coverage module collects code coverage data when the software module is loaded. The analysis module summarizes and reports results of the collected code coverage data.

A lens, system and/or method for providing custom ocular aberrations for enhanced higher visual acuity. Scaled versions of a patient's aberration pattern may either attenuate or amplify the overall amount of ocular aberrations, to either correct or partially correct a patient's aberrations leading to enhanced visual acuity and/or extended depth of focus. This may be binocularly applied in order to provide high visual acuity in a patient at least at near, far and intermediate distances. The method may include obtaining an optimized binocular summation of both eyes of the patient; designing a first lens solution to correct or partially correct the dominant eye's aberrations according to an attenuated scaled version of a patient's ocular aberrations in the dominant eye; and designing a second lens solution to provide an additional customized extension of depth of focus by the induction of scaled patterns of ocular aberrations in the non dominant eye.