實作八： MPICH 實作練習

​實作八

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• 使用你的帳號登入: ym

  login as: ym24
  ym24@bio.classcloud.org's password: ******
  ym24@bio001:~$ ssh-keygen -t rsa
  

• 產生 SSH 認證金鑰

  Generating public/private rsa key pair.
  Enter file in which to save the key (/home/ym24/.ssh/id_rsa):  <<< 請按 Enter
  Created directory '/home/ym24/.ssh'.
  Enter passphrase (empty for no passphrase):            <<< 請按 Enter
  Enter same passphrase again:                     <<< 請按 Enter
  Your identification has been saved in /home/ym24/.ssh/id_rsa.
  Your public key has been saved in /home/ym24/.ssh/id_rsa.pub.
  The key fingerprint is:
  2a:6c:05:f8:24:38:db:79:b9:4f:0c:74:da:c5:16:05 ym24@bio001
  

• 進行金鑰交換

  ym24@bio001:~$ cp .ssh/id_rsa.pub .ssh/authorized_keys
  

• 設定 MPD 設定檔跟 MPI 的執行檔路徑

  ym24@bio001:~$ echo "MPD_SECRETWORD=${user}$$" > ~/.mpd.conf
  ym24@bio001:~$ chmod 600 .mpd.conf
  ym24@bio001:~$ for ((i=2;i<=12;i++)); do echo "192.168.129.$i" >> mpd.hosts; done
  ym24@bio001:~$ export PATH=$PATH:/opt/mpich2/bin
  ym24@bio001:~$ which mpdboot
  /opt/mpich2/bin/mpdboot
  

• 設定 dsh (distributed shell)​*, 我們可以使用 dsh 指令逐台執行.

  ym24@bio001:~$ mkdir -p .dsh/
  ym24@bio001:~$ cp mpd.hosts .dsh/machines.list
  ym24@bio001:~$ dsh -a hostname
  

• 用使用者的身分執行 mpd

  ym24@bio001:~$ mpdboot -n 7
  

• 用 mpdtrace 檢查 mpd 執行狀態

  ym24@bio001:~$ mpdtrace 
  bio002
  bio006
  bio012
  bio011
  bio005
  bio004
  bio003
  bio010
  bio009
  bio008
  bio007