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User's guide to bluesky.khu.ac.kr

User's guide to bluesky.khu.ac.kr






How to access to bluesky using ssh

The login server, bluesky, is for the login purpose only.
To reduce the job overload on the server, the maximum CPU time allocated to users for each login session is limited to 20 min.
The cluster system has one login server, bluesky, and 50 computation nodes with name from n001 to n050.
Each node consists of one I7 intel CPU and 12GB (n001 - n032) or 8GB (n033 - n050) memory.

Shells scripts

Typically, there are two types of shell, csh (tcsh) and bash. If one wants to know his/her shell, type echo $SHELL on the shell prompt.

Each user can automatically define valuable shell environments as he/she logins if he/she create .cshrc (for csh) or .bashrc (for bash) .
Each sample of them can be found in /packages/examples where one can see files of cshrc and bashrc.
Please copy one of them to your home directory adding a leading dot to the file name. Below is the example of the .cshrc file.

#!/bin/csh -x
# @(#)cshrc 1.11 2010/11/29 SMI
#umask 022

setenv LANG C

set user=2`id -nu`
setenv HOME /home/${user}
setenv XKEYSYMDB ${HOME}/XKeysymDB
setenv USER_HOME ${HOME}
setenv NIS_PATH org_dir.$

############### FOR PRINTING USING lpr ###################
setenv PRINTER hp
setenv PSPRINTER hp
setenv LPDEST hp
###########################################################
setenv IFC /packages/intel
#setenv LM_LICENSE_FILE ${PGI}/license.dat


set path=2 (. /packages/intel/Compiler/11.1/064/bin/intel64/ /packages/openmpi-intel/bin $HOME/local/bin $path)

set path=2 ($path . /bin /usr/bin)
set path=2 ($path /usr/local/bin)
set path=2 ($path $HOME /packages/bin /packages/sbin)

setenv LD_LIBRARY_PATH /packages/intel/Compiler/11.1/064/lib/intel64:/home/kjhan/local/lib:/usr/lib64:/lib64:/usr/local/lib:/packages/lib:/packages/openmpi-intel/lib/


setenv MANPATH /usr/share/man:/usr/local/share/man/:`echo $MANPATH`:/packages/openmpi-intel/share/man:.:/packages/share/man:/packages/man:/packages/intel/Compiler/11.1/064/man/en_US

if ( $?prompt ) then
        set history=1000
endif
source ${HOME}/.aliases

set icontitle=2`hostname`
set filec
unset user
unlimit
limit coredumpsize 0
set autologout=2 0
set TERM=xterm


User Quotas in /home directory

The disk quota for each user in /home is set to 2GB for soft limit and 2.5GB for hard limit. If the disk usage exceeds 2GB, the quota system after seven days tries to delete the most recent files until the total disk usage drops below the soft limit. A user can check his/her quota usage by typing quota.

Scratch disks

There are a number of scratch disk spaces for yours. The five biggest disks are /scratch1,2,3,4,and 5 which have 2TB each. Also each computation node has their own local scratch disks of size 400GB. These scratch disks is auto-mounted to bluesky:/net/node_name/scratch where node_name is the name of the computation node. Files in the scratch disks will be deleted unless they are accessed during the last 20 days. Therefore, users should backup their important files. Also we have no backup system thus users should keep in mind that disks could be broken at any time. Users should use disks at their own risk.



Cluster Monitoring

Users can check the job load of the system by the web browser. Access to ganglia shows the job load, cpu status, network status, and etc.



Software

Intel compiler:

  • fortran: /packages/intel/Compiler/11.1/064/bin/intel64/ifort
  • cc: /packages/intel/Compiler/11.1/064/bin/intel64/icc

  • MPI package:
  • mpirun: /packages/openmpi-intel/bin/mpirun
  • mpif90: /packages/openmpi-intel/bin/mpif90
  • mpif77: /packages/openmpi-intel/bin/mpif77
  • mpicc: /packages/openmpi-intel/bin/mpicc

  • PBS package:
  • qsub: /packages/bin/qsub
  • qdel: /packages/bin/qdel
  • qstat: /packages/bin/qstat

  • GNU compiler:
  • gfortran: /usr/bin/gfortran
  • gcc: /usr/bin/gcc
  • mpif90: /packages/openmpi-gnu/bin/mpif90
  • mpif77: /packages/openmpi-gnu/bin/mpif77
  • mpicc: /packages/openmpi-gnu/bin/mpicc
  • mpirun: /packages/openmpi-gnu/bin/mpirun

  • Gaussian package:
  • /packages/local/yhkim/g09

  • Fishpak:
  • /packages/local/gchoe/fishpak

  • Mudpack:
  • /packages/local/gchoe/mudpack





  • Eunjung Ko
    Modified: Tue Oct 05 2010 at 01:19 PM