FastNBL: fast neighbor lists establishment for molecular dynamics simulation based on bitwise operations

In the molecular dynamics simulation, an important step is the establishment of neighbor list for each particle, which involves the distance calculation for each particle pair in the simulation space. However, the distance calculation will cause costly floating-point operations. In this paper, we propose a novel algorithm, called Fast Neighbor List, which establishes the neighbor lists mainly using the bitwise operations. Firstly, we design a data layout, which uses an integer value to represent the three-dimensional coordinates of a particle. Then, a bunch of bitwise operations and two subtraction operations are used to judge whether the distance between a pair of particles is within the cutoff radius. We demonstrate that our algorithm can deal with the periodic boundary seamlessly. We also use single instruction multiple data (SIMD) instructions to further improve the performance. We implement our algorithm on Intel Xeon E5-2670, ARM v8, and Sunway many-core processors, respectively. Compared with the traditional method, our algorithm achieves on average 1.79x speedup on Intel Xeon E5-2670 processor, 3.43x speedup on ARM v8 processor, and 4.03x speedup on Sunway many-core processor. After using SIMD instructions, our algorithm achieves on average 2.64x speedup and 14.43x speedup on Intel Xeon E5-2670 and ARM v8 processors, respectively.

     

8XC196MC／MD单片机波形发生器的应用技术研究

介绍了INTEL公司生产的8XC196MC／MD单片机的波形发生器的应用技术。着重讨论了有关参数的计算公式及相关寄存器的设置方法，从而使交流电机、直流无刷电机的控制更方便。     

Intel Cascade Lake架构CPU SPEC CPU2017评测

SPEC CPU2017基准包中包含SPEC的下一代行业标准,是目前CPU性能评测的客观和可信的基准程序之一.采用SPEC CPU2017对Intel Cascade Lake架构的Intel Xeon Gold 6252N型号CPU做了不同内存频率、不同副本数、打开/关闭T urbo的组合测试,总结了不同应用程序在不...     

嵌入式SIM卡通信模组在物联网中的应用研究

阐述了无线通信模块中SIM卡在物联网应用中容易出现的问题,介绍了嵌入式SIM卡通信模组的市场需求、发展现状及关键技术和标准,探讨了中国移动在物联网嵌入式SIM卡通信模组方面的研究进展及应用现状,最后分析了嵌入式SIM卡通信模组在物联网业务发展中的意义。     

虚拟硬件方法实现基于Intel StrongARM SA-1110平台的Linux APM

文章讨论了在StrongARM SA－1110开发板上实现Linux APM的主要技术问题。在分析了Intel StrongARM最新处理器SA－1110及开发板（Assabet）与电源管理相关的结构和特性的基础上,提出了一种基于虚拟硬件的系统跨平台移植的方法和思路,并以实际开发过程中的经验为背景,介绍了在Linux APM基于SA－1110平台的移植工作中虚拟硬件方法的应用和虚拟硬件方法在操作系统跨平台移植开发上的优点。     

用户为中心的设计方法在产品开发中的运用——以IF中国2008获奖作品学生笔记本电脑设计为例

在IF中国奖2008年度的评选中,第二代英特尔学生笔记本电脑以其为学生贴切的设计而获奖。英特尔新兴市场研发部一直以来致力于对学生电脑的开发,目前已有两款产品上市。本文结合了在产品设计开发工作中的经验及体会,以学生笔记本电脑的设计为例,从产品设计方法入手,大致介绍了以用户为中心(UCD)的设计方法在产品设计中的运用。     

用8051单片机接收红外遥控的实现

!PD6121,6122是用NEC传输格式的红外线遥控发射芯片,目前广泛的用在电视,录像机,音响,空调等设备上。8051系列单片机是目前应用最为广泛的8位机,其内核由美国因特公司设计。本文介绍如何用8051单片机准确接收红外遥控信号,并写出高效的代码。     

Parallel superconductor code on the iPSC/860

Researchers at Oak Ridge National Laboratory have developed an application code for calculating the electronic properties and energetics of disordered materials. The same source code has been compiled and run on workstations, Crays, and the Intel iPSC/860. This electronic structures code is capable of running at over 2 gigaflops on both an 8-processor CRAY Y-MP and a 128-processor Intel iPSC/860. Using this new KKR-CPA code, we executed density-of-state computations of a perovskite superconductor at a rate of 2527 megaflops on the Intel iPSC/860. This corresponds to a price/performance rate of 842 megaflops per $1 million based on the list price of this computer. Similar but smaller computations done on a network of ten IBM RS/6000 workstations executed at a price/performance rate of 1.3 gigaflops per $1 million.This research was supported by the Applied Mathematical Sciences Research Program, Office of Energy Research, and the Division of Materials Sciences, U.S. Department of Energy, under contract DE-AC05-84OR21400 with Martin Marietta Energy Systems, Inc.     

基于82530芯片的HDLC／SDLC规程高速数字通信应用的研究

Ｉｎｔｅｌ８２５３０多规程串行通信控制器是美国英特尔公司推出的继Ｉｎｔｅｌ８２７４芯片后的新品种，其性能和功能等各项指比８２７４、８２５１等同类产品均有明显提高。基于８２５３０芯片的串行通信应用越业越多，尤其是在采样率较高的实时控制系统中。本文介绍了８２５３０芯片的物理特性，并根据笔者在实际应用中的体会，较详细地介绍了８２５３０芯片的编程要点及芯片在中断处理中的有关问题。     

移动通信中SIM卡实用技术演进

通过对各种SIM卡技术的对比,说明了SIM卡不仅用于解决用户入网鉴权和加密问题,还在向着双面应用、非预置个人化信息、更小更薄、存储容量更大等方向发展。SIM卡技术的演进,推动着手机终端的发展,随着智能手机的普及,手机终端除具备通信功能外,还将具有银行卡、门禁卡、公交卡等多种个人化应用。     

浅谈EELIOD支持嵌入式WinCE．NET系统的应用

基于Intel PXA270的EELIOD平台提供了强大功能和丰富接口，通过进一步的扩展，可实现一个适合于多种应用领域的嵌入式参考设计和实验系统，帮助使用者以最快的速度了解Intel PXA270的性能／功能，以及嵌入式系统的基本开发方法和技巧。     

浅谈EELIOD支持嵌入式WinCE.NET系统的应用

基于IntelPXA270的EELIOD平台提供了强大功能和丰富接口,通过进一步的扩展,可实现一个适合于多种应用领域的嵌入式参考设计和实验系统,帮助使用者以最快的速度了解IntelPXA270的性能/功能,以及嵌入式系统的基本开发方法和技巧。     

The Intel 4004 microprocessor: what constituted invention?

Investigates the context for the development of one of the earliest microprocessors, the Intel 4004. It considers the contributions made by Intel employees, most notably Marcian E. “Ted” Hoff, Jr. and Federico Faggin, and the contributions other people made to this development who are not generally known, most notably Tadashi Sasaki and Masatoshi Shima. This paper represents a case study of how corporate and national cultures affect technological development and of the many aspects of invention, including conceptualization, logical design, engineering, fabrication, capitalization and marketing     

Optimizing mobile multimedia using SIMD techniques

Demand for mobile video applications is growing today in wireless handheld platforms. Optimizing instruction set architectures and employing SIMD techniques is a logical approach towards attaining higher performance in mobile multimedia applications. Intel? Wireless MMX™ technology has been designed to accelerate mobile multimedia and applications processing in a power efficient manner. This paper provides an overview of Intel? Wireless MMX™ technology, a 64-bit Single Instruction Multiple Data (SIMD) coprocessor for the Intel? XScale? microarchitecture, and the key features of the architecture that specifically enhance the multi-media performance. Tools and techniques for optimization are also described. Nigel C. Paver has 13 years experience with the ARM architecture, and in the Intel PCA Components group in Austin, Texas, he is responsible for the architecture and implementation of multimedia coprocessors for the Intel XScale micro-architecture. He is also involved in product architecture and definition of Intel PCA processors. Before Intel, Nigel was one of the lead designers of the early AMULET asynchronous ARM microprocessors at the University of Manchester. He was also vice president in a startup company which used asynchronous design techniques to produce a low-power asynchronous DSP core. Nigel holds a Master of Science degree and Ph.D. in computer science from the University of Manchester and a Bachelor of Science degree in electronics from UMIST. Moinul Khan is a multimedia product architect at Intel Corporation PCA Components group. He is responsible PCA graphics and security architecture. His research interests are virtual prototyping, signal processing algorithms and architecture and communications networking. Before joining Intel he was a technology specialist and founding member of a startup at ATDC, Georgia. He worked on his doctoral research at Georgia Center for Advanced Telecommunications Technology at Georgia Institute of Technology. He received his B.Tech form Indian Institute of Technology and MSEE from Georgia Tech. He also worked as a research member for Canadian Institute for Telecommunications Research and Bell Communications Laboratories. Bradley C. Aldrich joined Intel in 1997 where he is currently an architect within the PCA Components Group. His current work includes the development of coprocessor instruction support in addition to image capture and display technologies for XScale based application processors. He was previously a member of the Intel/Analog Devices joint development architecture team responsible for video enhancements for the Micro Signal Architecture. Prior to that he was a video system architect in Intel's Digital Imaging and Video Division working on CMOS sensors, still cameras, and tethered PC based video peripherals. He has also worked as a device engineer for Motorola and as a test engineer for Tektronix. He received a BSEE in 1988 and MSEE in 1994 from the University of Texas at San Antonio.     

All power to the SIM

With the advent of 3G mobile telephony, the demands placed on the memory and processing capabilities of SIM cards have increased dramatically. In order to cope with these demands, and to provide significantly enhanced capabilities, almost all the main players have now launched 128K SIM cards.This is a short news story only. Visit www.compseconline.com for the latest computer security news.     

基于Intel IOP处理器的存储网络技术的研究与实现

存储网络是网络技术与I／O通道以及存储介质相结合的产物。随着存储网络技术的飞速发展,Intel推出了有关存储网络的高性能、低功耗的系列处理器即IOP。本文从几种典型的存储网络入手,逐步介绍了存储网络的组成,并设计出一种基于Intel IOP处理器的存储网络系统,以及对未来存储网络的展望。     

Performance evaluation of supercomputers using HPCC and IMB Benchmarks

The HPC Challenge (HPCC) Benchmark suite and the Intel MPI Benchmark (IMB) are used to compare and evaluate the combined performance of processor, memory subsystem and interconnect fabric of five leading supercomputers—SGI Altix BX2, Cray X1, Cray Opteron Cluster, Dell Xeon Cluster, and NEC SX-8. These five systems use five different networks (SGI NUMALINK4, Cray network, Myrinet, InfiniBand, and NEC IXS). The complete set of HPCC Benchmarks are run on each of these systems. Additionally, we present Intel MPI Benchmarks results to study the performance of 11 MPI communication functions on these systems.     

Detection of metamorphic and virtualization-based malware using algebraic specification

We present an overview of the latest developments in the detection of metamorphic and virtualization-based malware using an algebraic specification of the Intel 64 assembly programming language. After giving an overview of related work, we describe the development of a specification of a subset of the Intel 64 instruction set in Maude, an advanced formal algebraic specification tool. We develop the technique of metamorphic malware detection based on equivalence-in-context so that it is applicable to imperative programming languages in general, and we give two detailed examples of how this might be used in a practical setting to detect metamorphic malware. We discuss the application of these techniques within anti-virus software, and give a proof-of-concept system for defeating detection counter-measures used by virtualization-based malware, which is based on our Maude specification of Intel 64. Finally, we compare formal and informal approaches to malware detection, and give some directions for future research.     

Explicit Fourth-Order Runge–Kutta Method on Intel Xeon Phi Coprocessor

This paper concerns an Intel Xeon Phi implementation of the explicit fourth-order Runge–Kutta method (RK4) for very sparse matrices with very short rows. Such matrices arise during Markovian modeling of computer and telecommunication networks. In this work an implementation based on Intel Math Kernel Library (Intel MKL) routines and the authors’ own implementation, both using the CSR storage scheme and working on Intel Xeon Phi, were investigated. The implementation based on the Intel MKL library uses the high-performance BLAS and Sparse BLAS routines. In our application we focus on OpenMP style programming. We implement SpMV operation and vector addition using the basic optimizing techniques and the vectorization. We evaluate our approach in native and offload modes for various number of cores and thread allocation affinities. Both implementations (based on Intel MKL and made by the authors) were compared in respect of the time, the speedup and the performance. The numerical experiments on Intel Xeon Phi show that the performance of authors’ implementation is very promising and gives a gain of up to two times compared to the multithreaded implementation (based on Intel MKL) running on CPU (Intel Xeon processor) and even three times in comparison with the application which uses Intel MKL on Intel Xeon Phi.     

基于PXA272的Linux引导程序的设计和实现

讨论了启动引导程序在嵌入式系统开发过程中的作用,对启动引导程序的工作原理和实现方法做了详细的分析;介绍了Intel(R) PXA272微处理器的芯片体系结构特征和开发板Uranium V0.9的硬件平台结构;结合基于Intel?的PXA272的开发板Uranium V0.9的设计、研发和调试过程,详细说明开发板的启动引导程序的设计、实现方法;简述了启动引导程序为配合开发板器件的测试而扩展的部分测试功能.