Interview Questions on CUDA Programming

                  Following are the questions on CUDA programming generally asked in interviews. Go through them. 

1. What do you mean by Cuda core?

2. What are the components of gpu?

3. What are the different memories used in gpu?

4. What are memories which are particular to each thread?

5. Which memory is used by all threads in a single block?

6. What is the use of Constant memory?

7. What is the use of Texture memory?

8. What do you mean by bock and grid in Cuda?

9. What is the difference between CPU and GPU?

10. Why do we need GPU when already we have CPU?

11. What is the advantage of shared memory in CUDA?

12. What is the advantage of constant memory in CUDA?

13. What is warp in CUDA?

14. What is the use of cudaMalloc() function and what arguments does it accept?

15. What is the use of cudaMemcpy() function and what arguments does it accept?

16. What is the use of cudaFree() function and what arguments does it accept?

17. What is kernel in Cuda?

18. How kernel is defined in Cuda?

19. How to define a kernel which is called from another kernel?

20. How kernels are called from main() function?

21. What is dim3 in Cuda?

22. How can we define a multi dimensional structure of grid?

23. How can we define a multi dimensional structure of block?

24. What are the keywords used for finding block id and thread id?

25. What are keywords used for block size and grid size?

26. Name any Nvidia gpu card which consists of two gpus?

27. How to find out number of gpus in your system?

28. How to find out id of current gpu on your system?

29. What are the different properties of gpu?

30. How to find out properties of gpu?

31. Which properties of gpu are used to find its compute capability?

32. How to set any gpu as current gpu when its id is given?

33. What is the use of cudaChooseDevice() function and what arguments does it accept?

34. What is the use of memset() function and what arguments does it accept?

35. How to declare a variable which is to be saved in shared memory?

36. How to declare a variable which is to be saved in constant memory?

37. What is the use of cudaMemcpyToSymbol() function and what arguments does it accept?

38. What are the different alternatives to Cuda?

39. What is parallel computing?

40. What are the advantages of parallel computing?

41. What are the different architectures according to Flynn's taxonaomy?

42. What are different parallel programming models?

43. What are the two basic classes of parallel architectures?

44. Which are general purpose parallel architectures?

45. Which are special purpose parallel architecures?

46. What is the unit used to represent frequency of a gpu?

47. What do you understand by Mflop?

48. What do you mean by speedup with respect to performance of parallel computers?

49. What is Amdahl's law? Give the expression for the speed up.

Check other posts on CUDA Programming