Common use Linux and Windows Computers

RedHat Enterprise 6 Linux

These Linux machines can be used for high end processing such as Matlab, IDL, and C/Fortran codes. Keep in mind that others might be logged in and running processes as well.

High end processing systems
  • humboldt.colorado.edu - Dual Intel Xeon quad-core 2GHz, 24GB memory
Rules for high end system use:
  • Number of processes allowed per user
    (all values subject to change at any time)
    No more than four single core utilizing processes at any given time
    No more than two multiple core utilizing process at any given time
  • If you are not under any time contraints, please consider using "nice" on any process you are running. (see manpage for details)
  • No X11 forwarding of large graphical interfaces (i.e. Matlab graphical desktop). You may forward things like plots, graphs, images, etc but huge GUI desktops for Matlab, IDL, and Mathematica are not allowed. I'd highly suggest only doing this from on campus. Off campus networks are not fast enough to make this worthwhile.
  • This system is designed for unattended processing of data and the non-desktop versions of IDL, Matlab, and Mathematica should be used at all times.
  • Only direct SSH connections are allowed. Please refrain from using programs such as VNC to forward the entire desktop environment.
  • Please consider others when using this system. Many people want to utilize this system and if we all play nice, it will do the job without slowing down to a crawl.
Any violations of the above rules will result in termination of the offending process without notice to the user. I don't like doing it so please don't make me.

Windows 7 Enterprise:

There is one available common use Windows computer for CCAR. The system is called rackwin.colorado.edu and is located just outside the CCAR Support office near the freight elevator. You can use this computer in two ways:

1. You can log onto it directly using the Terminal user account. This account has no password and allows you to use all installed programs. You cannot install programs yourself. If you need a program installed, let us know.

2. If you are on a Linux machine, we can setup remote desktop which allows you to run the windows desktop from your Linux computer. CCAR support has to do some initial setup procedures for it to work but once setup you just need to type the following command: (this is all one line!)

rdesktop -g 1024x768 -u user name -a 32 -r disk:username=/home/username -N -z rackwin.colorado.edu

This long winded command does alot. The short story is that it will log you onto the windows machine as "user name" with full sound and video, and it will mount your CCAR home directory automatically so you can transfer files easily back and forth.

This setup allows you to use Any Windows program on the Windows 7 computer to open a file located in your home directory. Keep in mind that this will run slower because you are working accross the network. A better and faster practice would be for you to copy the file you want to edit to the Windows desktop, edit it with whatever Windows program you want to use, then copy it back to your home directory.

**Please note** - This Linux home directory mount will only let you copy files that are located in your home directory. You cannot go into any subdirectories or the remote connection will fail with an error and you'll need to log out and then back in to re-establish the connection. There is nothing I can do about this. If you plan to copy files from the Linux mount to the Windows Desktop, make sure the files are stored in your home directory and not in a subdirectory.

Please keep in mind that even thought you may have an account setup on it, you are sharing diskspace with every other user on that particular computer so please do not store large amounts of data on your Windows account.