command prompt windows opening with -parafile option

Colleagues, I have been configuring parallelization in NONMEM 7.2 on several Windows machines for various colleagues. I have discovered an inconsistency that I don't understand. On one machine, when I start the process, 3 additional command prompt windows open (nodes = 4) and the task manager shows the 4 NONMEM jobs; when the estimation step completes, the windows close, then reopen during the covariance step, then close again. On the other machine, no additional windows open and the task manager also shows the 4 NONMEM jobs. The setups are otherwise identical (gfortran) with the same command (FPI, rather than MPI). I don't know which is the expected behavior. I would prefer the setup without the additional command prompt windows. Is there a configuration issue that I can control? Any thoughts would be appreciated. Dennis Dennis Fisher MD P < (The "P Less Than" Company) Phone: 1-866-PLessThan (1-866-753-7784) Fax: 1-866-PLessThan (1-866-753-7784) www.PLessThan.com