Parallel Computing–Cannon算法 (MPI 实现)

【Parallel Computing–Cannon算法 (MPI 实现)】的更多相关文章

Parallel Computing–Cannon算法 (MPI 实现)

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*/…

MPI中的cannon算法

Cannon算法算法过程假设矩阵\(A,B\)和\(C\)都可以分成\(m\times m\)块矩阵,即\(A = (A_{(ij)})_{m\times m},B = (B_{(ij)})_{m\times m}\)和\(C = (C_{(ij)})_{m\times m}\),其中\(A_{ij},B_{ij}\)和\(C_{ij}\)是\(n \times n\)矩阵,进一步假设有\(p = m \times m\)个处理器.为了讨论Cannon算法,引入块置换矩阵\(Q = (Q_{…

Introduction to Parallel Computing

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…

Parallel.For 平行算法使用

之前看到Parallel的用法,觉得很高深,很腻害,今天专门抽空研究了一下,发现还是很easy的. .NET Framework 4.0 新加的功能,所以4.0之前的无法使用哦. 下面介绍一下,Parallel称为平行算法,用白话说,就是为了充分利用电脑多核处理器的优势,使得每隔核心都可以努力干活,不让他们闲着,来提高运行效率. 不过使用需要注意几点: 1:Parallel 并行处理时如果涉及到共享资源的话,使用要很小心,因为并行同时访问共享资源,就会出现不确定的状态,非要使用,可以加锁来解…

General mistakes in parallel computing

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…

Method and apparatus for an atomic operation in a parallel computing environment

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…