AMD interview questions

Submitted resume through professor's recommendation. Got phone interview in two weeks. Asked a lot of technical questions, including object-oriented concepts, digital circuit basic questions and something relevant to parallel computer. Also described some projects that I had worked on. The interview took about one hour. The interviewer had accent that was quite hard to understand...

Applied through a former co-worker. Got a call from hiring manager. It was a quick 30 min phone interview. After this, got invited to on-site interview. On-site interview was not tough, except for few difficult ( for me ) technical questions. I could answer 80=90 %. But sometimes I found it hard to understand why some interviewing persons tone was as if you have done something wrong, just because you went there to get interviewed, and they are the boss of you now. I found it hard to understand why a candidate must be treated as if he/she is inferior person than person at AMD. I felt sometimes that tone of person interviewing was hostile without any provocation. At least to me it seemed odd. But once I got over it, it was ok. Also some people and AMD were very good in treating you with common courtesy/good manners.