Also, somewhat in parallel, is there a way to query as to whether ADE or whatever the managing entity is thinks there is still a simulation running? Originally when I did this I assumed that sevRun was blocking but obvious it isn't. So, I tried to immediately call sevRun for a dozen simulations which caused things to go berserk. ADE was sure there was a simulation running in the background but there was no process and no lock file and I didn't know where else to look. My only solution was to kill ADE altogether and start over.