NVIDIA Computer Arch/Parallel Programming interview questions

It wasn't clear what team or position I was being interviewed for. The first two phone interviews were good and were with people from the computer architecture team. The third interview was with someone from the PP team. The third interviewer kept asking me recruiter-style questions in addition to a rapid fire list of technical and brain teasers. There was no opportunity for me to express my views or ask questions--truly bad sign of group dynamics. He was also quite condescending.