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Leopold-Franzens-Universität Innsbruck

The LinuX Cluster

This document is part of the Local Guide for the LinuX based computer LAN of the Theoretical Physics Department at the University of Innsbruck.

    User Guidelines
Ganglia Cluster Report  (ITP only)
System Features
Operating System (OS)
Software Equipment
User Accounts
The internal HOWTOs
Contact

System Features

Below you may find a list containing basic hardware and OS related information about the machines currently available in the LinuX cluster. It may serve as an indication as to which machine to use when intending to run a particular program.

NameIP-AddressProcessorCacheRAMComment
bozon 138.232.67.5 4 x Eight-Core Opteron 6128
2.0 GHz (Magny-Cours)
8 x 512 kB L2
12288 kB L3
65 536 MB 64bit CentOS 6.6 new.gif 
dopey 138.232.67.15 2 x Intel Xeon DP
2.8 GHz (Prestonia-0)
2 x 512 kB
3072 MB CentOS 4.9
Application & File-Server
for ThinClients
electron 138.232.67.24 2 x Intel Dual-Core Xeon 5160
3.0 GHz (Woodcrest)
2 x 4096 kB 8192 MB 64bit CentOS 6.6
fe-c705 138.232.67.18 2 x Intel Quad-Core Xeon E5606
2.13 GHz (Westmere-EP)
4 x 256 kB L2
8 MB L3
16 384 MB 64bit CentOS 6.6
Room 2/04
fermion 138.232.67.4 4 x Quad-Core Opteron 8356
2.3 GHz (Barcelona)
4 x 512 kB L2
2048 kB L3
65 536 MB 64bit CentOS 5.11new.gif
fr1-c705 138.232.67.22 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/07
fr2-c705 138.232.67.23 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/06
fr3-c705 138.232.67.49 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/06
fr4-c705 138.232.67.17 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/14
fr5-c705 138.232.67.36 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/14
fr6-c705 138.232.67.31 Intel Core i7-4770S
3.1 GHz (Haswell)
4 x 256 kB L2
8 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/09
gnu 138.232.67.7 2 x Intel Quad-Core Xeon 5345
2.33 GHz (Clovertown)
2 x 8192 kB 16 384 MB 64bit CentOS 5.11
go-c705 138.232.67.30 Intel Core i7-3930K
3.2 GHz (Sandy Bridge-E)
6 x 256 kB L2
12 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/04
graviton 138.232.67.6 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
131 072 MB 64bit CentOS 6.6new.gif
grunt 138.232.67.33 2 x Intel Pentium II
450 MHz (Deschutes)
4 x 512 kB L2
6144 kB L3
512 MB CentOS 5.11
Zip drive
Room 2/17
hbar 138.232.67.25 4 x Six-Core Opteron 8431
2.4 GHz (Istanbul)
6 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 5.11new.gif 
hs-c705 138.232.67.53 Intel Core i7-3930K
3.2 GHz (Sandy Bridge-E)
6 x 256 kB L2
12 MB L3
32 768 MB 64bit CentOS 6.6
Room 2/03
jerrie 138.232.67.9 2 x Sixteen-Core Opteron 6274
2.2 GHz (Interlagos)
16 x 1024 kB L2
16384 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
NIS Slave
File
-Server 2
ito 138.232.67.19 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
kg-c705 138.232.67.55 Intel Core 2 Duo T9300
2.5 GHz (Penryn C0)
6144 kB 4096 MB 64bit CentOS 6.6
Room 2/15
mcavity 138.232.67.14 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 5.11 new.gif
mungo 138.232.67.8 2 x Intel Quad-Core Xeon 5345
2.33 GHz (Clovertown)
2 x 8192 kB 32 768 MB 64bit CentOS 5.11
NIS Master, Application-,
TeX-Application,
Login- & File-Server
for ThinClients
muon 138.232.67.37 2 x Intel Dual-Core Xeon 5160
3.0 GHz (Woodcrest)
2 x 4096 kB 8192 MB 64bit CentOS 6.6
utrino 138.232.67.35 2 x Intel Quad-Core Xeon 5345
2.33 GHz (Clovertown)
2 x 8192 kB 16 384 MB 64bit CentOS 5.11
neutron 138.232.67.29 2 x Intel Xeon EM64T
3.0 GHz (Irwindale)
2 x 2048 kB 6144 MB CentOS 4.9
noise 138.232.67.26 4 x Quad-Core Opteron 8356
2.3 GHz (Barcelona)
4 x 512 kB L2
2048 kB L3
65 536 MB 64bit CentOS 5.11 new.gif
obiwan 138.232.67.44 Intel Quad-Core Xeon X3360
2.83 GHz (Yorkfield)
2 x 6144 kB L2 4 096 MB 64bit CentOS 5.11
Print-Server
Samba-Server
Wins-Server
panic 138.232.67.12 2 x Intel Quad-Core Xeon 5345
2.33 GHz (Clovertown)
2 x 8192 kB 16 384 MB 64bit CentOS 5.11
photon 138.232.67.1 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
Login-Server
for ThinClients
pion 138.232.67.27 2 x Intel Quad-Core Xeon 5345
2.33 GHz (Clovertown)
2 x 8192 kB 16 384 MB 64bit CentOS 5.11
positron 138.232.67.58 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 5.11
proton 138.232.67.28 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
qbit 138.232.67.47 4 x Quad-Core Opteron 8356
2.3 GHz (Barcelona)
4 x 512 kB L2
2048 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
quantum 138.232.67.3 4 x Quad-Core Opteron 8356
2.3 GHz (Barcelona)
4 x 512 kB L2
2048 kB L3
65 536 MB 64bit CentOS 5.11 new.gif
quaxo 138.232.67.10 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 5.11 new.gif
regulus 138.232.67.20 2 x Intel Xeon EM64T
3.0 GHz (Irwindale)
2 x 2048 kB 2048 MB CentOS 4.9
Login-Server
for ThinClients
sk-c705 138.232.67.48 Intel Core 2 Duo T8300
2.4 GHz (Penryn M0)
3072 kB 4096 MB 64bit CentOS 6.6
Room 2/23
vacuum 138.232.67.21 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 6.6 new.gif
vortex 138.232.67.38 2 x Intel Xeon EM64T
3.2 GHz (Irwindale)
2 x 2048 kB 4096 MB CentOS 4.9
Print-Server 2
for LinuX Hosts
yedi 138.232.67.51 4 x Quad-Core Opteron 8380
2.5 GHz (Shanghai)
4 x 512 kB L2
6144 kB L3
65 536 MB 64bit CentOS 5.11 new.gif
yeti 138.232.67.11 2 x Intel Xeon DP
2.66 GHz (Prestonia-0)
2 x 512 kB 3072 MB CentOS 4.9
Print-Server
Samba-Server
zo-c705 138.232.67.56 Intel Core 2 Duo T9300
2.5 GHz (Penryn C0)
6144 kB 4096 MB 64bit CentOS 6.6
Room 2/04
zo1-c705 138.232.67.39 Intel Core 2 Duo T9500
2.6 GHz (Penryn C0)
6144 kB 4096 MB 64bit CentOS 6.6
Room 2/15
zo2-c705 138.232.67.40 Intel Core i7-3770
3.4 GHz (Ivy Bridge)
4 x 256 kB L2
8 MB L3
8192 MB 64bit CentOS 6.6
Room 2/08a
zo4-c705 138.232.67.45 Intel Core 2 Duo T9300
2.5 GHz (Penryn C0)
6144 kB 4096 MB 64bit CentOS 6.6
Room 2/15

Operating System (OS)

The operating system (OS) of the LinuX cluster computers is   CentOS LinuX versions 4.9, 5.11 and 6.6. For details about the operating system, see the online documentation at your RedHat/CentOS (version 9 or EL 4 es) LinuX box or at the RedHat and CentOS Web sites.

Software Equipment

Besides all the UNIX specific applications many other programs (licensed as well as Freeware) are available on the LinuX cluster. This includes the programs "Matlab" (versions 8.3.0.532, R2014a, & 8.2.0.701, R2013b, & 8.1.0.604, R2013a, & 8.0.0.783, R2012b, & 7.14.0.739, R2012a, & 7.12.0.635, R2011a, & 7.11.0.584, R2010b, & 7.10.0.499, R2010a, & 7.7.0.471, R2008b, & 6.5.180913a R13), "Mathematica" (versions 10.0 & 9.0.1 & 8.0.4 & 8.0.0 & 7.0 & 6.0 & 5.2), "Maple" (versions 11.00 & 9.01) and "StarOffice" (version 8). For a list of the accessible software on the LinuX Cluster, see the list Software at the UNIX Cluster.

Matlab & Mathematica: In order to use Matlab and Mathematica (with all fonts displayed properly) you should do the following:

  1. Add /net/appls/bin to your PATH environment variable in one of the files .bashrc, .profile, .bash_profile etc. (depending on your shell).
  2. Source the respective file on the commandline by: ". 'filename'"
  3. Simply use the commands matlab or mathematica to invoke the program.

Note: Matlab 8.3 (R2014a) & 8.2 (R2013b) are running via the command matlab83 or matlab82 at CentOS 6 LinuX computers only! Matlab 6.5 (R13) is available at all CentOS LinuX computers via the command matlab6. Matlab 7.7 (R2008b) is available at all CentOS LinuX computers via the command matlab77.
In order to use Matlab 6, Matlab 7 or Matlab 8 you should use the command:

$ matlab6 -nojvm
or
$ matlab[7,8] -nodesktop

The option -nojvm is used to start matlab without Java Virtual Machine which may not work bugfree or slows computing, the option -nodesktop is used to start matlab without Java desktop (see Changes to -nojvm Startup Option).

Maple: In order to use Maple 11 you should use the command:

$ maple -cw

The -cw (Classic Worksheet interface) option causes Maple to run with an X Window Classic Worksheet interface. The Classic Worksheet interface is an alternative to the Standard Worksheet interface. Classic Worksheet Maple is designed for machines with limited memory. This interface provides a basic worksheet environment with access to the complete mathematical engine.

Note: Maple 9 is still available at all Redhat LinuX computers via the command maple9.

User accounts

The user accounts on the cluster are managed via the Network Information Service (NIS). Ordinary users can run the command yppasswd to change their NIS password. It will prompt them for their old NIS password and then ask them for their new password twice, to ensure that the new password was typed correctly.

$ yppasswd
Changing NIS account information for "user ID" on mungo.uibk.ac.at.
Please enter old password: <type old value here>
Changing NIS password for "user ID" on mungo.uibk.ac.at.
Please enter new password: <type new value>
Please retype new password: <re-type new value>

Changing NIS password has been changed on mungo.uibk.ac.at.

If the old value does not match the current value stored for that user, or the two new values do not match each other, then the password will not be changed.

All the LinuX home directories are mounted via the automount program, so that any user on the LinuX cluster can reach the same (his) home directory from any LinuX station within the cluster.

If you need more disk space to store some big files for a few days, you can do it on one of our automounted scratch directories:

/net/scratch
(230 GB) (at host vortex)
  /net/mungo
(473 GB)
/net/bozon
(638 GB)
  /net/muon
(218 GB)
/net/dopey
(36.7 GB)
  /net/neutrino
(431 GB)
/net/electron
(218 GB)
  /net/neutron
(58 GB)
/net/fe-c705
(858 GB)
  /net/noise
(821 GB)
/net/fermion
(821 GB)
  /net/panic
(431 GB)
/net/fr1-c705
(1.8 TB)
  /net/photon
(867 GB)
/net/fr2-c705
(1.8 TB)
  /net/pion
(431 GB)
/net/fr3-c705
(1.8 TB)
  /net/positron
(155 GB)
/net/fr4-c705
(1.8 TB)
  /net/proton
(867 GB)
/net/fr5-c705
(1.8 TB)
  /net/qbit
(834 GB)
/net/fr6-c705
(1.8 TB)
  /net/quantum
(821 GB)
/net/gnu
(431 GB)
  /net/quaxo
(821 GB)
/net/go-c705
(882 GB)
  /net/regulus
(58 GB)
/net/graviton
(894 GB)
  /net/sk-c705
(206 GB)
/net/hbar
(834 GB)
  /net/vacuum
(867 GB)
/net/hs-c705
(882 GB)
  /net/yedi
(834 GB)
/net/kg-c705
(206 GB)
  /net/zo-c705
(124 GB)
/net/ito
(821 GB)
  /net/zo1-c705
(271 GB)
/net/jerrie
(1.5 TB)
  /net/zo2-c705
(890 GB)
/net/mcavity
(595 GB)
  /net/zo4-c705
(206 GB)

Note: Data on scratch directories will not be backed up!

Back Up of Home Directories

The files in the "home" directories of the LinuX stations mungo, jerrie and dopey are automatically backed up daily by centrally-scheduled ADSM/TSM tasks. Thus, if you have deleted files or directories on LinuX sites by mistake you can restore them yourself by running the command /usr/bin/dsm at the command line on that LinuX box where your home directory physically is located (see Restore deleted files/directories).

Note: Files in directories named tmp or cache will be NOT backed up!

Note: If you dont't know the location of your home, just type pwd at the prompt of your home directory, and you'll get something like

$ pwd
/net/<sitename>[#]/<username>

where [#] is a number out of {0, 1, 2, 3, 4}. In most cases the <sitename> will be mungo, jerrie or dopey.

For more information about ADSM/TSM, see Tivoli Storage Manager or ADSM/TSM-Server (FABS: HSM, Backup) and TSM V5: Sichern und Wiederherstellen von Daten at the ZID home page.

User Quota

In order to get a better grip on some of the more pesky users of the LinuX Cluster we have activated quotas on the central file servers mungo, jerrie and dopey. To check your disk quota login to the file servers mungo, jerrie or dopey and type quota at the command line. The quota(1) command displays the current disk usage along with your personal limits for disk space (blocks) and number of inodes (files). The soft limit (quota) can be temporarily exceeded (for a grace period of 7 days) whereas the hard limit (limit) is an absolute upper bound.

If you run out your quota you might first choose to tar and gzip directories. This is convenient as the kfm-window manager allows you to view and manipulate tgz files just like ordinary directories. Other simple strategies are:

  • remove unused dvi, aux, log files;
  • clear your netscape cache;
  • avoid keeping many huge matlab data files if possible;
  • compress your mail folders.

Note: If your quota is exceeded and you do'nt have any grace time you may not be able to login at your LinuX desktop any longer. If this happens you have to login remotely to the file server dopey or jerrie (e.g. with ssh from an Laptop) or login with a different acount name (e.g. guest) and make a su. Then you can do some (or all) of the obove strategies to shrink your home.

The internal HOWTOs

Contact

If you need additional information about the LinuX cluster or an account on it or if you have problems with applications, please contact your system administrators.

But: If your question is "How do I do ... with ..." then don't ask it until you've read all of the HowTo's and FAQ's or the relevant parts of the Software at the UNIX Cluster yourself. We don't appreciate people who are too lazy to read the documentation. (If the documentation is unclear, or the relevant paragraph is too well hidden, then that's a different matter. Of course, we want to know about that.)

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