2:05 tells you everything you need to know http://www.youtube.com/watch?v=jySUpMqmzd4
From this point onwards there's a bit of drag & lift, especially towards the end, & It's bloody wonderful!!!!!!! Why wouldn't you lift the tempo in that end solo, I know I do. Our band is one of the very few who dare to pull this track off live. I'm not boasting, but I frequently get comments about our tempo control on this punishingly difficult number, & we play it a fair bit slower than Floyd do here.