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
[username@triton ~]$ 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
option is used for X11 jobs, for example:
[username@triton ~]$ bsub -Is -q interactive -XF Job <50274> is submitted to queue <interactive>. <<ssh X11 forwarding job>> <<Waiting for dispatch ...>> <<Starting on n003.triton.edu>>
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 email@example.com
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
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