1. Log in to your university's designated login server via SSH:

   ssh <username>@vsc2.vsc.ac.at

1. Transfer your programs and data/input files to your home directory.

       scp <filename> <username>@vsc.univie.ac.at:~/    

2. (Re-)Compile your application. Please use the latest “Intel” MPI-Environment as described in MPI Environment.

If you have reason to directly connect to a dedicated login server, you may write

ssh <username>@l21.vsc.ac.at  
...
ssh <username>@l25.vsc.ac.at  

This can be used for troubleshooting. E.g., in order to resolve specific questions, it may be useful that the support team can test your jobs on the same login server as you.

As usual, you will then be asked to type your password.

In addition, you will be asked for your one time password (OTP; sms token which is sent to your mobile phone). This OTP is an additional feature increasing the security of the cluster.

1. port 22 is open only for login with password and one-time-password (otp). Since port 22 is the default ssh port, stating a 'ssh <username>@vsc2.vsc.ac.at' will always ask for a password.
2. login with ssh-key + otp is only possible at port 27: ssh -p 27 <username>@vsc2.vsc.ac.at
3. currently the lifetime of the otp is set to 12 hours, ie. every 12 hours a new otp has to be entered. All logins in between will not require an otp.

Open a terminal window and type

ssh <username>@vsc2.vsc.ac.at

This address points to all five login servers l21, l22, or l23. By connecting to <username>@vsc2.vsc.ac.at you are assigned to one of these servers in round robin manner.

If you have reason to directly connect to a dedicated login server, you may write

ssh <username>@l21.vsc.ac.at  
...
ssh <username>@l23.vsc.ac.at  

This can be used for troubleshooting. E.g., in order to resolve specific questions, it may be useful that the support team can test your jobs on the same login server as you.

As usual, you will then be asked to type your password.

In addition, you will be asked for your one time password (OTP; sms token which is sent to your mobile phone). This OTP is an additional feature increasing the security of the cluster.

1. port 22 is open only for login with password and one-time-password (otp). Since port 22 is the default ssh port, stating a 'ssh <username>@vsc2.vsc.ac.at' will always ask for a password.
2. login with ssh-key + otp is only possible at port 27: ssh -p 27 <username>@vsc2.vsc.ac.at
3. currently the lifetime of the otp is set to 12 hours, ie. every 12 hours a new otp has to be entered. All logins in between will not require an otp.

In order to be able to submit jobs on VSC-3 (or VSC-2) the following lines have to be included in your .bashrc file

# Connecting from a Mac under OS X Mavericks displays the following warning:
# -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8):
# No such file or directory
# This will result in an error when submitting jobs to the Grid Engine on VSC-2.
# If the following is set, this warning can be savely ignored:

export LC_CTYPE=en_US.UTF-8
export LC_ALL=en_US.UTF-8

# Alternatively, to suppress this warning, change on the Mac:
#      Terminal -> Preferences... -> Settings -> Advanced -
#      - Uncheck the option “Set locale environment variables on startup” -
#      - Restart Terminal
# see also: https://wiki.vsc.ac.at/doku.php?id=doku:osx-mavericks&s[]=locale

How to connect from Windows?