44 results about "Multi threaded programming" patented technology

A user interface for a content presentation system is disclosed for displaying and manipulating graphical multimedia content for an audience while hiding operator-specific elements from the audience. The operator-specific elements are permitted to overlap the audience-viewable elements on the operator's display, allowing for optimal use of screen real estate particularly on smaller touch-based devices. The use of a multithreaded programming architecture is preferably employed to take advantage of multi-cored CPUs and GPUs, allowing the operator and audience displays to be governed by separate CPU cores or threads and therefore perform graphical manipulations with high efficiency.

A thread realization and dispatch method on data process operational platform relates to avoiding or reducing kernel thread switch, fully utilizing the processor efficiency and reducing system resources cost with the following stops: finishing design of thread controller, thread creation of thread bonding, starting operational thread activation, receiving items trigger transfer into operational state thread operation, finishing thread state switch, putting in order and operational array management thread dispatch and finishing clearance of thread data, releasing thread symbol, exit of thread of adjusting system thread numbers.

A CAD / CAM / CNC closed-loop control method based on a dynamic feature model is characterized in that an XML is used as a carrier for off-line CAD / CAM data presentation and transmission; a service software unit and a feature software unit are established as an on-line CNC control platform, and the dynamic feature model is used as an integration means for off-line technological preparation and on-line processing control; a multithread programming mode and a finite-state machine method are used for realizing concurrence and triggering of multiple algorithms; a memory sharing method is used as a means for real-time communication between the service software unit and a numerical control system core and between the feature software unit and the numerical control system core. The CAD / CAM / CNC closed-loop control method based on the dynamic feature model effectively realizes CAD / CAM / CNC closed-loop control and is beneficial to the improvement of control level.

Optimizing program parameters in multithreaded programming may include: generating, for a program, a plurality of low-level metric functions, each of the low-level metric functions calculating a respective low-level metric of a plurality of low-level metrics; generating one or more high-level metric functions for one or more high-level metrics, each of the one or more high-level metric functions comprising a piecewise-rational function based on one or more of the low-level metric functions; and generate, based on the one or more high level-metric functions, one or more data parameter values and one or more hardware parameter values, one or more program parameter values for executing the program, wherein the one or more program parameter values are configured to optimize the one or more high-level metrics.

The invention provides a multi-thread parallel processing method based on a multi-thread programming and a message queue, belonging to the field of high-performance computation of a computer. The parallelization of traditional single-thread serial software is modified, and current modern multi-core CPU (Central Processing Unit) computation equipment, a pthread multi-thread parallel computing technology and a technology for realizing in-thread communication of the message queue are utilized. The method comprises the following steps of: in a single node, establishing three types of pthread threads including a reading thread, a computing thread and a writing thread, wherein the quantity of each type of the threads is flexible and configurable; exploring multi-buffering and establishing four queues for the in-thread communication; and allocating a computing task and managing a buffering space resource. The method is widely applied to the application field with multi-thread parallel processing requirements; a software developer is guided to carry out multi-thread modification on existing software so as to realize the optimization of the utilization of a system resource; and the hardware resource utilization rate is obviously improved, and the computation efficiency of software and the whole performance of the software are improved.

The invention discloses a parallel implementation method of a big data Karatsuba algorithm. According to the method, the correlation problems of storage and calculation of partial products are solved through ingenious formula transformation technique, pointer operation and storage manner on the basis of 64-bit unsigned long integer operation, the algorithm is parallelized by adopting a section task sharing policy through OpenMP multi-thread programming, so that the first-layer parallelization of 8 threads in a recursive program is started to solve 8 partial products, each section is responsible for the calculation task of one partial product, and after all the partial products are solved, serial merging is carried out, so that the Karatsuba algorithm is parallelized and the efficiency of the algorithm is improved.