Dear All,

I want to run two frontend programs (one for trigger and one for slow control)
concurrently on the same computer, but I failed. The second frontend said: 

Semaphore already present
 There is another process using the semaphore.
 Or a process using the semaphore exited abnormally.
 In That case try to manually release the semaphore with:
   ipcrm sem XXX.

The two frontends are connected to the same experiment. Is there any way I can
overcome this problem?

Thanks!

Jimmy