If you are running out of space when simulating the project. Please put the simulation directory under /tmp in eng. To do so, in the Analog enviroment Window, we need select Setup...->Simulator/Directory/Host, then choose the spectreS simulator, and set the project directory as /tmp/USERNAME/cadence/simulation/ "USERNAME" will be your username, this is just for identifying your own simulation. Remember to make copies of important input signal files and the spectreFinal in your home dir, because whatever in the "/tmp" dir will be deleted on the other day.