I interviewed at IBM (Kolkata) in July 2016. The whole process took 5 days.
First they took online test which were of two rounds, both being elimination round.
First online test was of Number Series and Aptitude. Both sections consisted of 18 question with time limit of 2 minutes and 15 seconds. Ater passing that test you will give 2nd online test which was of English, basic questions were asked like punctuation marks, error, active voice, passive voice, business communication emails, etc. After passing this test I was asked to come after 3 days for interview round(Technical + HR) via email.
I have successfully cleared the interview round and completed all the assesments.