This is an old revision of the document!
No need to try to connect your laptop to the LSCE wire network, it will not work!
The best you can do is use the eduroam or guest wifi network, if your office is close enough to one of the access points.
Warning! You can't connect directly to the LSCE servers from the wifi network. If you need to do that, you will have to connect to a server outside LSCE first, and then back to LSCE
There is a lot of information available on the intranet, but you can only access it from a computer connected to the LSCE network: https://intranet.lsce.ipsl.fr/
Everything about the LSCE servers (and other software and hardware information): https://intranet.lsce.ipsl.fr/informatique/index.php
Web site: http://www-saclay.cea.fr/index.php
You can only access it from the CEA network! This intranet is the place where you can get information about:
Everybody working for CLIM & ESTIMR gets a computer that can be connected to the LSCE network. Please take the time to read the instructions below, that may help make your life easier
Read the notes in Windows 7 notes, especially the Basic Windows 7 Configuration section
If an application requests administrator's rights to install something or make changes to the computer, and you are sur it's not a virus, use the .\adminuser
account and the adminuser password you got when your computer was configured, or ask the system administrators.
⇐ Add some stuff here
Depending on what you need to do:
Sorry, you are on your own, but it's soooo easy to use, right?
There are lots of things you can do directly on your local Win7 or Linux desktop (displaying pdf, images, using a text editor, …), rather than directly on the servers. Never forget that your local desktop has access to the remote disks on the Linux servers.
Otherwise, use the appropriate Linux servers. The load balancing system will send you to the server that has currently the smallest load
ssh asterix
, or ssh asterix.lscelb
): use these servers for the usual day-to-day work (things that use less than 1 Gb, don't use 100% CPU for a long time)ssh obelix
, or ssh obelix.lscelb
): use these servers for interactive processes that will need more ram and/or CPU during a longer time
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
jypeter@obelix4 - ...jypeter - 46 >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 Cpu(s): 12.6%us, 0.0%sy, 0.0%ni, 87.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 32877756k total, 14706188k used, 18171568k free, 21372k buffers Swap: 33554428k total, 1628972k used, 31925456k free, 14105940k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 10193 mpeau 20 0 302m 4336 2272 R 100.0 0.0 7033:08 emacs 16504 mpeau 20 0 110m 2008 1228 S 0.7 0.0 0:00.13 tcsh 26344 dzhu 20 0 1635m 20m 3880 S 0.3 0.1 0:44.90 ipython 1 root 20 0 21448 1108 892 S 0.0 0.0 0:01.61 init [...]
The top lines give you some summary information about the system, but you should monitor the memory usage (VIRT
and RES
), CPU
and TIME
columns. By default, top
will will put the processes using the more CPU at the top (as shown above). You can see above that the emacs
text editor has clearly crashed, because it should not use 100% CPU for such a long time
If you type M
, the processes will be sorted my memory usage, as shown below
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 16092 jchang 20 0 8488m 8.1g 7912 R 99.6 25.9 1:41.38 idl 23256 pvait 20 0 232m 70m 2632 S 0.0 0.2 0:01.36 R 26344 dzhu 20 0 1635m 20m 3880 S 0.0 0.1 0:44.87 ipython 10619 astege 20 0 954m 9292 2664 S 0.0 0.0 0:40.67 gedit 1362 nslcd 20 0 442m 6056 2208 S 0.0 0.0 2:13.98 nslcd 16238 twang 20 0 128m 5068 2076 S 0.0 0.0 0:00.05 gconfd-2 10193 mpeau 20 0 302m 4336 2272 R 99.9 0.0 7024:13 emacs [...]
Other useful keys:
q | Quit |
c | Display the command line options of the running processes |
u | List only the processes of a specific user |
Send a mail to: help-lsce@lsce.ipsl.fr
The only way to access the LSCE servers from outside LSCE is to connect first to the idefix1.extra.cea.fr gateway server. Unless you are on a machine that is outside LSCE, but still on the CEA network (e.g. one of the machines of the CEA computing center)
ssh -A -X your_lsce_login@idefix1.extra.cea.fr
ssh asterix.lscelb
ssh obelix.lscelb
ssh your_tgcc_login@curie-ccrt.ccc.cea.fr
ssh -A -X your_lsce_login@idefix1.extra.cea.fr -t ssh -A asterix.lscelb
ssh -A -X your_lsce_login@idefix1.extra.cea.fr -t ssh -A obelix.lscelb
ssh -A -X your_lsce_login@idefix1.extra.cea.fr -t ssh -A your_tgcc_login@curie-ccrt.ccc.cea.fr
~/.cshrc
configuration filealias iasterix 'ssh -A -X your_lsce_login@idefix1.extra.cea.fr -t ssh -A asterix.lscelb
'If you are on a computer outside LSCE and you need to transfer a file to/from LSCE, you need to make the transfer between your current machine and idefix1!
scp -p file_outside_lsce your_lsce_login@idefix1.extra.cea.fr:/home/scratch01/your_lsce_login/
Ask you advisor, who has probably already told you everything that was listed above, so you did not really learn anything new by reading this page
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