Energy-Efficient Scientific Workflow Scheduling Algorithm in Cloud Environment

Algorithm 4

Pseudocode to deploy new VM (scaleUp()).

1. select type to execute the task within its deadline;

2. sort all the hosts in the list in decreasing order as per their utilization level;

3. ;

4. for all in

5. if host utilization does not exceed the upper threshold limit after VM allocation then

6. deploy ; break;

7. end if

8. end for

9. if then

10. select the which has minimum utilization level;

11. select the from which has minimum CPU capacity;

12. if cab be migrated to another host except then

13. migrate ;

14. end if

15. if utilization does not exceed the upper threshold limit after allocation then

16. deploy on ;

17. ;

18. end if

19. end if

20. if then

21. start a new host and add it to ;

22. deploy on the newly started host;

23. ;

24. end if

25. allocate to and remove from ;

26. update the ready time and transfer time;