Some slides (for example, #35 and 36) were apparently taken as-is from the older presentation by Mark Harris (http://developer.download.nvidia.com/compute/cuda/1_1/Website/projects/reduction/doc/reduction.pdf) and contain code from CUDA version of the reduction optimization experiment.

In my opinion, description of algorithm cascading along with Brent’s theorem is pretty important, but unfortunately it is missing in the current talk. Otherwise, great lecture, thank you James!