Triton Interactive Jobs ======================== HPC clusters primarily take batch jobs and run them in the *background*—users do not need to interact with the job during the execution. However, sometimes users do need to interact with the application. For example, the application needs the input from the command line or waits for a mouse event in X windows. Use ``bsub -Is -q interactive command`` to launch interactive work on Triton. :: [username@mgt3.summit ~]$ bsub -Is -q interactive bash Upon exiting the interactive job, you will be returned to one of the login nodes. Interactive Job Utilizing X11 client ------------------------------------ Additionally, the interactive queue can run X11 jobs. The bsub ``-XF`` option is used for X11 jobs, for example: :: [username@mgt3.summit ~]$ bsub -Is -q interactive -XF Job <393> is submitted to queue . <> <> <> Upon exiting the X11 interactive job, you will be returned to one of the login nodes. To run an X11 application, establish an X tunnel with SSH when connecting to Triton. For example, :: ssh -X username@t2.idsc.miami.edu Note that by default, the auth token is good for 20 minutes.  SSH will block new X11 connections after 20 minutes. To avoid this on Linux or OS X, run ``ssh -Y`` instead, or set the option **ForwardX11Trusted yes** in your ~/.ssh/config. In Windows, use \ `Cygwin/X `__ to provide a Linux-like environment.  Then run ``ssh -Y`` or set the option in your ~/.ssh/config file.