Being an interpretive language, MATLAB provides many features to enhance the ease‐of‐use of interactive operations. However, these features may have the adverse effect of degrading computational performance. This is especially pronounced on jobs that require long run times and large memory. This tutorial identifies these pitfalls and demonstrates ways to improve user code performance. The prerequisite for this course is a basic knowledge of MATLAB, either gotten on your own or from our "Introduction to MATLAB" tutorial. If you try to sign up for this tutorial and find that it is full, please send email to scv-tutorial@bu.edu and we will do our best to accommodate you.