在LINUX上安装和配置MPICH-2

在LINUX上安装和配置MPICH-2

 

•          Step 1： MPICH-2的下载

                    

–        

 

目前最新的版本是mpich2-1.1.tar.gz (linux source code) .

 

 

–         tar zxvf mpich2-1.1.tar.gz

•          Step 2: MPICH2的安装

–         ./configure --prefix=/home/xuyc/mpi-dist

–         make

–         make install

 

       Step 3： MPICH-2的配置与验证

•          需要Python软件

•          设置主目录下的mpd.hosts文件

–         $HOME/mpd.hosts文件中加入了一行：sv168   /*计算机名称*/

•          配置SSH无密码登录

–         在各个节点上运行命令：ssh-keygen -t rsa

•          命令和手册页路径的配置

–         export PATH=/home/xuyc/mpi-dist/bin:$PATH

–         export MANPATH=/home/xuyc/mpi-dist/man:$MANPATH

 

•          Step 4： 启动MPD

–         可启动mpd进程，创建mpi运行时环境 ：mpdboot 改成 mpd &

 

[xuyc@sv168 examples_collchk]$ configuration file /home/xuyc /.mpd.conf not found

A file named .mpd.conf file must be present in the user's home

directory (/etc/mpd.conf if root) with read and write access

only for the user, and must contain at least a line with:

MPD_SECRETWORD=

One way to safely create this file is to do the following:

  cd $HOME

  touch .mpd.conf

  chmod 600 .mpd.conf

and then use an editor to insert a line like

  MPD_SECRETWORD=mr45-j9z

into the file.  (Of course use some other secret word than mr45-j9z.)

       当出现以上错误提示时，按照上面的操作即可。MPD_SECRETWORD填写当前用户的登录密码。

 

•          Step 5：应用程序的编译、链接

–         mpicc –o mypi cpi.c

 

       在／home/xuyc/mpi-dist/share/examples_collchk　下有example，直接make即可。

 

•          Step 6: MPI程序的运行

–         mpiexec -n 4 ./time_bcast_nochk

–         该命令为mypi程序启动4个进程

 

[xuyc@sv168 examples_collchk]$ mpiexec -n 4 ./time_bcast_nochk

time taken by 1X1 MPI_Bcast() at rank 0 = 0.000005

time taken by 1X1 MPI_Bcast() at rank 1 = 0.000002

time taken by 1X1 MPI_Bcast() at rank 3 = 0.000007

time taken by 1X1 MPI_Bcast() at rank 2 = 0.000004

 

(性能分析以及调试 在以后的文章中阐述)