Changes between Version 3 and Version 4 of MPICH2_Install

Timestamp:

Mar 6, 2008, 4:29:49 PM (17 years ago)

Author:

chris

Comment:

--

MPICH2_Install

@@ -71 +71 @@
 
  * '''Step 4''' : Add New Configuration Files
-  * Add ''mpd.host file'', you could put it anywhere in your system.
+  * Add ''mpd.host file'' on all the other nodes, you could put it anywhere in your system.
 {{{
 root@client-01:~/mpich2-1.0.7rc1# touch mpd.hosts
@@ -87 +87 @@
 client-03
 }}}
-  * Add ''/etc/mpd.conf'', there is only one line in it.
-   Notice that all the nodes must have the same password.
-   We use "this_is_password" for example here.
+  * Add ''/etc/mpd.conf'' on everynode, there is just one line.[[BR]]
+   Notice that all the nodes must have the same password.[[BR]]
+   We use "this_is_password" for example here.[[BR]]
 {{{
 root@client-01:~/mpich2-1.0.7rc1# touch /etc/mpd.conf
@@ -100 +100 @@
 root@client-01:~/mpich2-1.0.7rc1# chmod 600 /etc/mpd.conf
 }}}
-
+ * '''Step 5''' : Modify SSH Connections
+  * At first, you need to check if ssh have been installed on your machines.[[BR]]
+    If not, you could try ''apt-get install ssh'' to install ssh.[[BR]]
+    All nodes need to install ssh.[[BR]]
+  * Second, now we are going to establish ssh connections between all nodes without entering password.[[BR]]
+    Issue the following commands on '''ALL''' the other nodes.
+{{{
+root@client-01:~/mpich2-1.0.7rc1# ssh-keygen -t dsa
+Generating public/private dsa key pair.
+Enter file in which to save the key (/root/.ssh/id_dsa):
+Created directory '/root/.ssh'.
+Enter passphrase (empty for no passphrase):
+Enter same passphrase again:
+Your identification has been saved in /root/.ssh/id_dsa.
+Your public key has been saved in /root/.ssh/id_dsa.pub.
+The key fingerprint is:
+d7:ad:ce:0f:e2:d8:16:3d:92:10:b8:b3:7f:7b:68:d9 root@client-01
+root@client-01:~/mpich2-1.0.7rc1#
+}}}
+  * Just press enter when the system promoting the messages.
+  * Copy id_dsa.pub and overwrite to ./authorized_keys
+{{{
+root@client-01:~/mpich2-1.0.7rc1# cd /root/.ssh/
+root@client-01:~/.ssh# cp ./id_dsa.pub ./authorized_keys
+}}}
+  * Copy all files under /root/.ssh/ and overwrite the same directory on all nodes.
+  * Establish ssh connections to all other nodes from node1(client-01).[[BR]]
+    While connecting to the other nodes first time, you need to enter 'yes'.[[BR]]
+    Since you will be automatically login as root to all the other nodes without typing any password.[[BR]]
+    If any error occurs, just remove /root/.ssh/known_hosts, and re-ssh. 
 
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