How to Sleep/Rest during loops AND FREE all the resouce[not freeze the panel]?

[hellohere]

Thanks, 

My PC is set to sleep after 3hr. The BATCH mode does not finish [need roughly 5 hours]. 

When the screen was re-active, the BATCH mode came back, BUT complained fatcl I/O error[nothing is done/changed] and crushed. 

Not sure why. 

[Kurt_Bremser]

You must turn your "energy saving" settings off when you need to run long batch jobs in the background, because the system might turn off resources (like disks) when no user interaction from mouse or keyboard is detected.