Problem Loggin in

If the system refuses logging in it might be that the quota has run out, i.e. too much disk
space has been used. Use the following procedure to gain access to the system.

Select Session : Failsafe_Terminal from the main window before trying to log in. Now a
small window should start up in which the quota can be examined by the command 'quota'.

Use 'du -sk *' to find large files and directories.

When diskquota runs out.

Many of the CAD systems create big working- and log files that can cause the diskquota
to run out unless they are purged with regular interval. Below is a description of the most
common causes for the cad tools.

---

Cadence

The main culprit here is the log files directory for the simulator, Spectre. Usually
this catalog is named 'Sim' and resides in the local directory from which Cadenceis
started. It stores simulation data which can easily be restored on the next simulation. With
the tool off it can be removed by the command 'rm -rf Sim'.

Another soulution is to reduce the amount of data saved in the log files. By clicking on the
menu command Outputs > Save All, in the simulator window, and then setting the option
Select signals to output to selected the system will only store the values of the signals that
are selected before simulation and not all of them which is the default.

If all of this fails the Sim-directory can be moved to the temporary area by the following
commands after Cadence is shut down and the simulation catalog removed.

mkdir /tmp/username

mkdir /tmp/username/Sim

ln -s /tmp/username/Sim

There is now a link that connects the local Sim catalog with the real one that resides in the
tmp-area. By utilising the username collisions with other users are avoided.

The catalog Sim can have another name, f.ex. simulation and may also be located in the home directory.

On the lab-machines the area /export/space/nobackup/ can also be used.

Mentor Graphics

The log file 'transcript' created by ModelSim can grow big. It can be removed. The tool
also stores compiled files in the catalog 'work', that can also be removed from time to time.

Synopsys

The synthesizer tool creates a big directory of compiled files. This is named 'WORK'.  This
can be removed to save space but has to be recreated before the tool is started again. Use this
command 'mkdir WORK'.