NVIDIA Systems Software Engineer interview questions

Round-2: (technical design) 1. Interviewer showed a board block diagram. Say there are two GPUs on a single graphic card board. Design such a way that one of the GPUs enumerates as VGA device, then detect and enumerate the monitor to SBIOS. 2. Follow up questions on previous questions about GPIO pins, firmware, communication between two GPIOs and SBIOS.

Round-3: (technical + DSA) 1. How does GPU communicate with SBIOS saying its ready? Follow up questions on ucode implementation high-level design. 2. How to automate driver code implementation of register definitions, that are provided in HW spec? 3. For multiple SKUs in same generation, how do you implement code? (Answer: use device-id. Define bits of device-id to differentiate features and SKUs) 4. Implement code for checking if a matrix is chess board or not. 5. Given a function SetBits(value, endBit, startBit). Write the function implementation and handle corner cases.

Round-4: (DSA) 1. Implement integer division without division operator. 2. Reverse a singly linked list in groups of k. 3. Rotate a 2D array by 90 degrees clockwise.

Round-5: (Display ecosystem) 1. Questions on MIPI DSI protocol: about video mode, command mode, BTA, ESD. 2. Questions on Display Port protocol: about SST, MST, link training. 3. Questions on USB-C, PD, Alt-mode, tunneling. 4. Questions on eDP protocol.