Hello, 

 First year M.Sc. students are expected to find a research area and supervisor to work with by April in order to have guaranteed funding through the Spring/Summer term.
The total annual financial support for students holding teaching and research assistantships varies. At this time, funding for the first year is approximately $25 197 for a full-time M.Sc. student and $26 673 for a full-time Ph.D. student.

Regarding various scholarships and funding programs please go through the following link 

https://www.ualberta.ca/computing-science/graduate-studies/financial-support-and-awards

Hope this helps...