D.E.I.S. - UNIVERSITA' DI BOLOGNA
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Microelectronics Research Group
Linux Workstation Access


Local and Remote Access and File Transfer

Your login credentials for the linux workstations of the lab will be valid both locally and remotely. You will be able to log in from any location of your choice (e.g. from your home) via SSH.

If you have a linux machine (any variant), you should be able to log in onto our workstations directly from the command prompt, e.g.:

ssh username@micrelNNN.deis.unibo.it

To transfer files, you may use the scp utility:

scp username
@micrelNNN.deis.unibo.it:/home/username/remotefilename ./localfilename
scp ./localfilename
username@micrelNNN.deis.unibo.it:/home/username/remotefilename


If you are using KDE as your desktop shell, the Konqueror file manager also has a feature to directly browse remote filesystems over SSH. Try entering

fish://username@micrelNNN.deis.unibo.it

in the location bar.

If you are using Windows
, we suggest that you try PuTTY, a compact and lightweight open source client for SSH connections. You will need to create a new session by entering your username and the machine that you want to log onto. The port to which to connect is the default one (port 22), protocol "SSH".

To transfer files, you may want to try WinSCP, a graphical file manager which is based on the PuTTY engine and is also open source.

The UltraEdit text editor has a function to directly open files from a remote filesystem over SSH.

It is even possible to remotely run graphical applications on the linux workstations. To do so, however, you will need a so-called "X server" application. At the moment, we are not aware of any open source option with good enough quality and stability. You may want to have a look at commercial applications such as NetSarang Xmanager, an evaluation version of which can be downloaded for free.


Configuring the Printer

To use the printer in the lab, you can simply select the "lp1" printer from the linux worstations. If you have your own laptop, you will have to configure it.

If it is a linux laptop, the procedure will depend on the specific distribution. In general, try to set up an "HP JetDirect" network printer, located at 137.204.56.73 port 9100. You can use a generic PostScript driver or select the proper printer model - HP LaserJet 4000 PostScript. Please remember to also choose two-sided printing as the default!

If you have a Windows laptop, Control Panel -> Printers -> Add New Printer -> Local Printer (do not autodetect) -> Add New Port -> TCP/IP Port -> 137.204.56.73. In the next screen, select "HP LaserJet 4000 Series PS" as the printer model. 
Please remember to also choose two-sided printing as the default!


Machines Available for Login

This table summarizes the machines you may use for running applications, compiling software, synthesizing netlists, etc.. Since your workload may collide with other people's, we suggest to start with micrel58, which is a dedicated server and is able to sustain a large number of connections in parallel. Other machines may be faster, but somebody may be personally logged into them; when you launch a computation-intensive task, you may slow them down. Please ask before logging into any such machine!

Machine CPU Memory
micrel58 4x Xeon MP 1.5 GHz HT 10 GB
micrel59 P4 2.26 GHz 1 GB
micrel72 (dual boot, may be unreachable for login) Athlon 3000+ 2 GB
micrel83 Core 2 Duo E4300 2 GB
micrel87 P4 3.20 GHz 4 GB
micrel89 (dual boot, may be unreachable for login) Athlon 3000+ 2 GB
micrel98 P4 2.26 GHz 512 MB
micrel99 (dual boot, may be unreachable for login) Sempron 2400+ 1 GB
micrel124 (dual boot, may be unreachable for login) Athlon 2600+ 2 GB
micrel125 Athlon 2600+ 2 GB
micrel242 (dual boot, may be unreachable for login) P4 3 GHz 3 GB
micrel243 (dual boot, may be unreachable for login) P4 3 GHz 3 GB
micrel244 Core 2 Duo E6600 2 GB

All the machines are running the same OS and have the same applications installed, which should guarantee perfect compatibility among them. Your data (homes) will be visible from each of these machines.


Disk Space

Normally, logins will have access to 2 GB of disk space, located at /home/username. Above this threshold, you will be getting "disk full" error messages. Please contact the administrative staff if you need more disk space.

Backups are automatically performed twice per week, on Wednesday and Saturday night. Currently, four rounds of backups are kept simultaneously, which means about two weeks of history. Since the filesystem is distributed, no other file recovery methods are available beyond restoring from backups. Be careful with your data and please perform additional backups on your own if you manipulate particularly sensitive stuff!

When you finish your project or collaboration, we strongly encourage you to clean up the directory tree of your home folder, leaving a complete image of the relevant files: source code, scripts, documentation, source of your thesis and/or presentation (if applicable), etc.. Please leave a concise README describing what can be found in each subfolder, then contact the
administrative staff, who will take care of storing your files in a safe location and removing them from the filesystem.


Wireless Access

Wireless access is available in the lab, but MAC address filtering is performed. Please ask the administrative staff to get your MAC address onto the allowed list. The wireless network to join is called "Micrel Lab"; no special configuration is required.


Group Meeting

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Micrel Lab @ DEIS - Dipartimento di Elettronica, Informatica e Sistemistica - Facoltà di Ingegneria - Università di Bologna - Viale Risorgimento 2 40136- Bologna - fax 0512093785 - tel 0512093782