Differences

This shows you the differences between two versions of the page.

--- other:newppl:starting [2020/05/15 16:02] – [Which Linux servers should you use?] Improved jypeter
+++ other:newppl:starting [2020/08/24 11:27] – [Using your own computer at LSCE?] Improved jypeter
@@ Line 78: / Line 78: @@
 ===== Using your own computer at LSCE? =====
-No need to try to connect your laptop to the LSCE wire network, it will not work!
+No need to try to connect your personal laptop to the LSCE wire network, it will **not** work!
-The best you can do is use the [[https://intranet.lsce.ipsl.fr/informatique/wifi/index.php|eduroam or guest wifi]] network, if your office is close enough to one of the access points.
+The best you can do is use the [[https://intranet.lsce.ipsl.fr/informatique/en/wifi/index.php|Guest WiFi]] or [[https://intranet.lsce.ipsl.fr/informatique/en/wifi/eduroam.php|eduroam]] network, if your office is close enough to one of the access points.
-**Warning!** You can't connect directly to the //obelix// LSCE servers from the wifi network. You first have to connect to ''ssh1.lsce.ipsl.fr'', and then to ''obelix''
+**Warning!** You **can't** connect directly to the //obelix// LSCE servers from the wifi network. You first have to connect to the ''ssh1.lsce.ipsl.fr'' //gateway// server, and then to ''obelix''. More details in [[#accessing_the_lsce_servers_from_outside_the_lsce|Accessing the LSCE servers from outside the LSCE]]
 ===== Accessing the LSCE intranet =====
@@ Line 164: / Line 164: @@
 ===== Accessing the Linux servers from your LSCE deskop =====
-==== Linux or mac desktop ====
+[[other:ssh|Use ssh to connect to the servers]]
-Just open a terminal and [[#which_linux_servers_should_you_use|use ssh to connect to the appropriate server]]
+If you are really in a hurry, go directly to the [[other:ssh#useful_aliases|Useful aliases]] section, but it is important that you read the full page at least once!
-==== Windows desktop ====
-There should be an //Obelix// shortcut on the left side of your desktop. Double-click on it in order to open a window (e.g. with graphics) environment on one of the obelix servers. Each terminal you will open in this environment will run on the same obelix server. Use ssh to [[#which_linux_servers_should_you_use|connect another server]]
-If there is not yet an //Obelix// shortcut, use the [[other:win7apps#setup|VcXsrv XLaunch]] program to create it
-Note: you can also use [[other:win7apps#putty|Putty]] if you just need text windows, or [[other:win7apps#vcxsrv_windows_x_server|VcXsrv]] or [[other:win7apps#putty|Putty]]+[[other:win7apps#cygwin-x|Cygwin-X]] if you also need graphics
 ===== Which Linux servers should you use? =====
@@ Line 197: / Line 191: @@
   * **[[https://intranet.lsce.ipsl.fr/informatique/en/calcul/batch.php|The LSCE cluster]]** (aka the //batch system//). Use this for really heavy duty programs
   * **[[http://mesocentre.ipsl.fr/|The ciclad and climserv servers]]**. In some cases, you may need an account to use the [[http://mesocentre.ipsl.fr/|IPSL/ESPRI clusters]], especially if you need to use data files that are already available/mirrored there (e.g. **''CMIPn'' data**), rather than copying the data to LSCE
+    * [[http://mesocentre.ipsl.fr/account-opening/|Requesting a new account]]
   * **The ''asterix//N//'' servers**: some wise LSCE elders may mention these servers, but they don't exist any more!
@@ Line 219: / Line 214: @@
 If the Linux server you are working on seems slow, or if you want to get an idea of the resources **you** are using, you should use the ''top'' command
-<code>jypeter@obelix4 - ...jypeter - 46 >top
+<code>  >hostname
+obelix3
+ >top
 top - 17:48:51 up 8 days, 23:43, 29 users,  load average: 1.22, 1.38, 1.98
 Tasks: 324 total,   2 running, 320 sleeping,   2 stopped,   0 zombie
@@ Line 227: / Line 225: @@
   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
- mpeau     20   0  302m 4336 2272 R 100.0  0.0   7033:08 emacs
+ john      20   0  302m 4336 2272 R 100.0  0.0   7033:08 emacs
- mpeau     20   0  110m 2008 1228 S  0.7  0.0   0:00.13 tcsh
+ john      20   0  110m 2008 1228 S  0.7  0.0   0:00.13 tcsh
- dzhu      20   0 1635m  20m 3880 S  0.3  0.1   0:44.90 ipython
+ jane      20   0 1635m  20m 3880 S  0.3  0.1   0:44.90 ipython
 root      20   0 21448 1108  892 S  0.0  0.0   0:01.61 init
     [...]
@@ Line 239: / Line 237: @@
 <code>      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
- jchang    20   0 8488m 8.1g 7912 R 99.6 25.9   1:41.38 idl
+ bob       20   0 8488m 8.1g 7912 R 99.6 25.9   1:41.38 idl
- pvait     20   0  232m  70m 2632 S  0.0  0.2   0:01.36 R
+ john      20   0  232m  70m 2632 S  0.0  0.2   0:01.36 R
- dzhu      20   0 1635m  20m 3880 S  0.0  0.1   0:44.87 ipython
+ jane      20   0 1635m  20m 3880 S  0.0  0.1   0:44.87 ipython
- astege    20   0  954m 9292 2664 S  0.0  0.0   0:40.67 gedit
+ bob       20   0  954m 9292 2664 S  0.0  0.0   0:40.67 gedit
 nslcd     20   0  442m 6056 2208 S  0.0  0.0   2:13.98 nslcd
-twang     20   0  128m 5068 2076 S  0.0  0.0   0:00.05 gconfd-2
+ john      20   0  302m 4336 2272 R 99.9  0.0   7024:13 emacs
- mpeau     20   0  302m 4336 2272 R 99.9  0.0   7024:13 emacs
     [...]</code>
@@ Line 260: / Line 257: @@
   * It is very important to use the correct directories and make it easy for your advisor to find things after you have left
     * <wrap em>**Put the source codes, scripts and papers you are writing on a backed up disk**</wrap>
-      * The <wrap em>backed up disk at LSCE</wrap> is [[#the_home_directory|/home/users/your_login]]. You should have a few Gb available on //home// (use the ''quota -s'' command to find out the exact amount)
+      * The <wrap em>backed up disk at LSCE</wrap> is [[#the_home_directory|home directory]]\\ You should have a few Gb available on //home//\\ Use the ''quota -s'' command to find out the exact amount
     * Put **temporary files** on a scratch disk (''scratch01'' at LSCE)
     * Do **NOT** put (big) data files on a backed up disk
@@ Line 269: / Line 266: @@
 ==== Accessing remote disks ====
-It is possible to access directly all the disks on the LSCE servers from your local Linux or Windows desktop
+It is possible to access directly all the disks on the LSCE servers from your //local// Linux or Windows computer\\ (//local// = a computer on the LSCE ethernet/wired network)
   * Example path on the LSCE Linux server: ''/home/scratch01/your_lsce_login''
-  * Accessing the path above from a local desktop:
+  * Accessing the path above from a //local// computer:
-    * Linux desktop: ''/home/scratch01/your_lsce_login''
+    * Linux computer: ''/home/scratch01/your_lsce_login''
-    * Windows desktop: ''\\dfshost\dfs\scratch01\your_lsce_login''\\ {{ :other:newppl:dfs_on_win.png?nolink |}}
+    * Windows computer: ''\\dfshost\dfs\scratch01\your_lsce_login''\\ {{ :other:newppl:dfs_on_win.png?nolink |}}
 ==== The home directory ====
@@ Line 288: / Line 285: @@
       * bash shell users: ''.profile'' and ''.bashrc''
       * emacs text editor: ''.emacs''
-    * You can go to your home directory by typing ''cd'' (no arguments), and to the home directory of somebody else with ''cd ~login_name''
+    * You can go to your home directory by typing ''cd'' (no arguments),\\ and to the home directory of somebody else with ''cd ~login_name''
-    * At LSCE, you can't read the content of somebody else's //home// directory
+      * At LSCE, you can't read the content of somebody else's //home// directory by default
   * **Backup of the home directory on the LSCE servers**: YES! Every night
@@ Line 305: / Line 302: @@
  > quota -s
-Disk quotas for user jypeter (uid 6369):
+Disk quotas for user johndoe (uid 6369):
      Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
 prolix3:/users/   4658M   4883M   4981M           23503       0       0</code>
@@ Line 342: / Line 339: @@
 Your Linux environment may sometimes stop working correctly because you have exceeded the allowed quota on your disks (check your quotas with ''quota -s''). You can use the following command to get the size of all the directories and files in the current directory, sorted by size: ''du -sh * | sort -rh''
-<code>jypeter@obelix4 - ...jypeter - 46 >cd /home/scratch01/jypeter
+<code> >cd /home/scratch01/johndoe
-/home/scratch01/jypeter
+/home/scratch01/johndoe
-jypeter@obelix4 - ...jypeter - 47 >du -sh * | sort -rh
+ >du -sh * | sort -rh
 M     GLAC1DHiceF26.nc
 M     dashboard
@@ Line 458: / Line 455: @@
 <code> >ssh -v obelix
 OpenSSH_7.4p1, OpenSSL 1.0.2k-fips  26 Jan 2017
-debug1: Reading configuration data /home/users/jypeter/.ssh/config
+debug1: Reading configuration data /home/users/johndoe/.ssh/config
 debug1: Reading configuration data /etc/ssh/ssh_config
 debug1: /etc/ssh/ssh_config line 58: Applying options for *
@@ Line 464: / Line 461: @@
 debug1: Connection established.
 debug1: key_load_public: No such file or directory
-debug1: identity file /home/users/jypeter/.ssh/id_rsa type -1
+debug1: identity file /home/users/johndoe/.ssh/id_rsa type -1
 [...]
 debug1: Entering interactive session.
@@ Line 473: / Line 470: @@
 debug1: Sending env LANG = en_US
 Last login: Thu Mar  1 15:52:44 2018 from lsce4078.lsce.ipsl.fr
-Disk quotas for user jypeter (uid 6369):
-     Filesystem   space   quota   limit   grace   files   quota   limit   grace
+ >
- prolix3:/users   4558M   9766M  10743M           23741       0       0
-jypeter@obelix3 - ...jypeter - 41 >
 </code>