I applied through university. The process took 2 weeks. I interviewed at NVIDIA in Apr 2016
Interview
At the university career fair, each recruiting manager had a stack of quiz sheets. When you wanted to apply to a particular topic (this was systems software, one of them was ASIC design, etc), you were given the quiz and you were required to complete it and bring it back to the guy who gave you.
I was then given a short oral quiz about some more topics, and the person (who turned out to be my eventual manager), told me HR will contact me later.
It was after a week or two that HR set up a phone interview with my first interviewer. I got one, and after I passed the first one, I got an email for the second one a few days later, and so on. I had three phone calls in total. Two of my interviewers were my (eventual) co-workers, one of which was one of my mentors. They were all in my (eventual) team.
The final phone interview was with my (eventual) manager, the same person I met at the career fair, and I got an offer < 1 hour after the final phone interview ended.
No onsite interviews. No face-to-face interviews, other than the one at the career fair.
Interview questions [5]
Question 1
1. The quiz I took asked questions about systems software. Some were like "what is the difference between multi-threaded and multi-process computing, and what are the pros and cons", one was coding: "compute the number of binary 1's given an unsigned int" (must be in C).
2. The oral quiz had a lot of questions: one of them was to explain the binary coding solution to him. The one other question I really remember well was "discuss the tradeoff between a computation-based solution and a look-up table solution to computing sin(x)".
3. I only had one data structures and algorithm question, and that was computing the parity for each pair for an array of numbers. For instance, {1, 2, 3} = {0b1, 0b10, 0b11}. A pair would be (1, 3), and the parity of that would be 1 (1 XOR 1 XOR 1 = 1).
5. "Behavioral", non-technical questions. Forgot exactly what they were, but there was one that required you to think for a second instead of blurting out the answer based on intuition.
I applied online. The process took 4 weeks. I interviewed at NVIDIA (Urbana, IL) in Mar 2020
Interview
Apply on Nvidia workday for summer internship. Receiving 2 rounds of technical interview in system software security team after about a month. Interviewed by future co-workers. Questions are not hard and pretty interesting.
Interview questions [1]
Question 1
1st round: C/C++ coding on bitwise operations and simple linked list algorithm
2nd round: BFS + DP algorithm question in python
The process was simple, first there was a test which had some quantitative aptitude questions and then some on c,c++ and some more on OS. There were sectional cut-offs. Then there was a single interview that went on for over an hour which was technical+HR sort of round. Began with technical questions and some riddles and ended with some HR questions etc.
Interview questions [1]
Question 1
Write C code to insert a node in sorted linked list in it's proper position. Write actual runnable code, not algorithm.
It's a telephone intervew. He first asked some question about my resume. Then he asked some basic concept about operating system. At the end he give me a coding question about bit manipulation.