Future Wei Technologies, Inc.

Huawei Technologies Co., Limited

Handong Ye

Ziang Hu

Chen Tian

Peng Wu

Haichuan Wang

Jun Wang

Jiong Cao

Da Wang

Peng Zhao

Zongfang Lin

Xiaochun Ye

Xuefeng Han

Pengcheng Li

Karthik Rao

Senhuo Zheng

Adjusting an operating frequency of a CPU includes setting the operating frequency for a current operating cycle based on a CPU load in a prior operating cycle and a target CPU load. A current CPU load associated with the current processing cycle is detected. The CPU operating frequency is adjusted to a new operating frequency based on a difference between the target CPU load and the current CPU load. The operating frequency is adjusted based on minimizing the difference between the target CPU load and the detected load. A CPU load error is determined based on the current CPU load and the target CPU load. The target CPU load is adjusted based on the determined CPU load error and a threshold load error. A prediction is generated on whether to perform a new adjustment of the operating frequency of the CPU prior to expiration of a threshold time duration.

Energy efficiency adjustments for a CPU governor

An apparatus, method, and computer-readable media are provided for reducing an energy consumption of hardware on which an application is running. In use, a call is received from an application via an application program interface. Such call indicates a state of the application. Further, an action is determined, based on the call. The action is for reducing an energy consumption of hardware on which the application is running. The method continues by executing the action for reducing the energy consumption of the hardware on which the application is running.

Apparatus and method for reducing an energy consumption of hardware based on an application state

A system, computer readable medium, and method are provided for reducing the power consumption of a mobile device. The method includes the steps of detecting video content to be viewed in an application executed by the mobile device; detecting unwanted content associated with the video content; and operating the mobile device in a low-power mode during playback of the video content in the application in response to detecting the unwanted content. The mobile device may include a memory storing the application and a processor executing the application, which configures the processor to implement the method. Five techniques may be applied in the low-power mode to reduce power consumption including Dynamic Voltage and Frequency Scaling (DVFS), reducing resolution of content, reducing brightness of a display, masking content, and thread throttling. The low-power mode saves energy when playing back videos on the mobile device.

Content-aware energy savings for video streaming and playback on mobile devices

A computer-implemented method and system for reducing the amount of memory space required to store applications written in dynamic scripting languages loads a program module into memory and removes a category of program code, such as debug information or function definitions, from the program module. The method and system also receives a request for debug information, or a function call or query, and determines whether or not the corresponding program code is in memory. If not, then the location in storage is identified where the program module is stored, and another copy containing the corresponding program code is loaded into memory. The corresponding program code is located and copied into the program module in memory, and a response is provided to the request.

On-demand loading of dynamic scripting language code for reduced memory usage

An embodiment includes a method includes designating a portion of a plurality of processing cores as an input/output (I/O) core and compiling a program source code to produce compiled program source code, including identifying an I/O operation region of the program source code, determining a number of I/O operations for the I/O operation region, and determining a number of system resources and system resource types for the I/O operation region. The method also includes executing the program source code using the plurality of processing cores, including scheduling the I/O operation region of the program source code on the I/O core of the plurality of processing cores.

System and method for isolating I/O execution via compiler and OS support

The present invention discloses a simulator generation method and apparatus, relating to the field of simulator generation, which are used to implement rapid portability and high efficiency of a simulator. The solutions in the present invention are applicable to simulator generation.

Simulator generation method and apparatus

The present invention provides a method and a system for simulating multiple processors in parallel, and a scheduler. In this embodiment, the scheduler maps debug interface information of a to-be-simulated processor requiring debugging onto the scheduler during parallel simulation of multiple processors, so that the scheduler is capable of debugging, by using a master thread, the to-be-simulated processor requiring debugging via a debug interface of the to-be-simulated processor requiring debugging pointed by the debug interface information, thereby implementing debugging during parallel simulation of multiple processors.

Method and system for simulating multiple processors in parallel and scheduler

An embodiment method of global scope basic-block reordering includes profiling an application having a source code decomposable into a plurality of basic-blocks. The profiling yields a global basic-block sequence. The method also includes generating a hierarchical locality model according to the global basic-block sequence. The method also includes generating a target code according to the hierarchical locality model.

Compiler and method for global-scope basic-block reordering

Methods and systems that facilitate efficient and effective application program maintenance and patch distribution are described. A device comprises: a memory that stores application source code files and instructions for creating a hot patch file, wherein the application source code files include an update source code file and initial source code files before an application update; and a processor operable to create the hot patch file, wherein the hot patch file is created based upon differences between a pair of optimized source code file sets that result from optimization of a first set of the initial source code files and separate optimization of a second set of source code files; wherein the second set includes an update source code file and associated files selected from the first set based on results from a graph indicating manners in which said source code files related to one another.

Systems and methods to update source code files

Embodiments are provided for isolating Input/Output (I/O) execution by combining compiler and Operating System (OS) techniques. The embodiments include dedicating selected cores, in multicore or many-core processors, as I/O execution cores, and applying compiler-based analysis to classify I/O regions of program source codes so that the OS can schedule such regions onto the designated I/O cores. During the compilation of a program source code, each I/O operation region of the program source code is identified. During the execution of the compiled program source code, each I/O operation region is scheduled for execution on a preselected I/O core. The other regions of the compiled program source code are scheduled for execution on other cores.

Growing community of inventors

Union City, CA, United States of America

Handong Ye