Differences between Multi Threading and Multi Tasking.

Differences between multi threading and multi tasking. Multi threading Multi tasking. ® A program is divided in to 2 or more sub programs or threads that are executed at the same time in parallel. ®Thread is a light weight process. ®It supports execution of multiple parts of a single program simultaneously. ®It helps in developing efficient programs. ®It is an operating system concept in which multiple tasks are performed simultaneously. ®Program is heavy weight. ®It supports execution of multiple programs simultaneously. ®It helps in developing efficient operating system.       Process    Program ®Program under execution is called process ®Process always resides in main memory. ®Process exists only for limited time. ®Set of instructions is called program ®Program always resides in secondary memory. ®Program exists for long time.