The following lectures, plus one lesson, cover the GPU part of the course.
Lecture 9: GPU hardware, trends and architecture.
Lecture 10: Introduction to CUDA.
Lecture 11: CUDA memory access, advanced CUDA features.
Lecture 12: More CUDA. Shader programming.
Lecture 13: OpenCL
Lesson: Summary, interactive questions
Lecture notes: Here
Note: Some pictures are removed from the uploaded PDFs, for copyright reasons. I am working to replace all such images.