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openmpi-demo's Introduction

Open MPI Demos

Tested on Raspberry Pi cluster.

Prerequisites

openmpi

mpi4py

说明

helloworld.cc 每个进程输出 helloworld

bcast.cc 由主进程接收控制台输入并广播给各子进程

ring.cc 由主进程接收输入,然后根据进程序号依次传播

find_pi.cc 指定进程个数为 n,计算pi

Testing table

Slice = 1000000 | Node number | Elapsed time | error | Cluster nodes = 2 | 161 | 2e-8 | Cluster nodes = 3 | 138 | 2e-8

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