Copied From:https://computing.llnl.gov/tutorials/parallel_comp/ Author: Blaise Barney, Lawrence Livermore National Laboratory UCRL-MI-133316 Table of Contents Abstract Overview What is Parallel Computing? Why Use Parallel Computing? Who is Using Para…

这是2013年写的一篇旧文,放在gegahost.net上面  http://raison.gegahost.net/?p=97 March 11, 2013 General mistakes in parallel computing Filed under: concurrency,software — Tags: atomic, cocurrency, data race, dead lock, parellel — Raison @ 2:51 am (Original Work by P…

A method and apparatus for a atomic operation is described. A method comprises receiving a first program unit in a parallel computing environment, the first program unit including a memory update operation to be performed atomically, the memory updat…

MAST 397B: Introduction to Statistical ComputingABSTRACTNotes: (i) This project can be done in groups. If it is done in a group, you have to submit the copy for the group (not individuals). In this case the cover page must have all the group members…

Data Collections ---> Stream to Channel (as source input) ----> Parallel Computing---> Results (as source ouput) -----> To DB ( Presentation) ISpout is the core interface for implementing spouts. A Spout is responsible for feeding messages int…

原理不解释,直接上代码 代码中被注释的源程序可用于打印中间结果,检查运算是否正确. #include "mpi.h" #include <math.h> #include <stdio.h> #include <stdlib.h> #include <string.h> void scatter_matrix(int* fstream,int n1,int n2,int*Q,int root,int tag){ /*每个矩阵块的大小*/…

Omega Network Model…

线程是有趣的 线程类似于进程.如同进程,线程由内核按时间分片进行管理.在单处理器系统中,内核使用时间分片来模拟线程的并发运行.这样的方式和进程的同样. 而在多处理器系统中,如同多个进程.线程实际上一样能够并发运行. 那么为什么对于大多数合作性任务.多线程比多个独立的进程更优越呢?这是由于,线程共享同样的内存空间. 不同的线程能够存取内存中的同一个变量.所以,程序中的全部线程都能够读或写声明过的全局变量.假设曾用 fork() 编写过重要代码.就会认识到这个工具的重要性.为什么呢?尽管 fork(…

As we demonstrated in “A gentle introduction to parallel computing in R” one of the great things about R is how easy it is to take advantage of parallel processing capabilities to speed up calculation. In this note we will show how to move from runni…

转自:http://www.cnblogs.com/mywolrd/archive/2009/02/05/1930707.html#phtread_ref POSIX 多线程程序设计  Blaise Barney, Lawrence Livermore National Laboratory 目录表  摘要 译者序 Pthreads 概述  什么是线程? 什么是Pthreads? 为什么使用Pthreads? 使用线程设计程序 Pthreads API编译多线程程序 线程管理 创建和终止线程 向…