I could understand of wat ur talking about. may be u want to run different design at the same time using a single system.
This is possible coz EDA tools run on either unix or linux systems but , how fast it is depends on the many factors like the system speed and no. of DC licenses u have.
So if ur running ur scripst on UNIX terminal u can run any number of scripts but depends on how many DC licenses ur can use at any single time.
So in each terminal u can run a script for different design. so try to open 2 different termilans with 2 diff scripts . I am sure they will run simul .. but will be very slow in giving resuls.
1. You cannot have One Design Compiler license do 2 synthesis simultaneously
However if you have 2 licenses, then invoking DC two different times will be entirely independent of each other.
2. One caution: If you are using previously 'analyzed' designs from a library, then doing 2 synthesis on two different designs using two different tcl scripts may cause a problem, if the two designs use the same 'analyzed' library. This will only happen when both designs are using a subdesign with same name and different functionality.
Kr,
Avi http://www.vlsiip.com