8.8 What should I do when USPEX is not running for a while?

When you found USPEX is not running for a while, with file still_running existing for a long time (usually longer than 30 minutes; use “ls -l” command to check the timestamp of the still_running file), you should consider that there is something wrong with the calculation. In this situation, what you need to do is to follow a checking procedure below: