The correct answer is "option 1".

CONCEPT:

A supercomputer is a computer that gives a high level of performance as compared to any general-purpose computer.

The performance of a supercomputer is commonly measured in Floating-Point Operations Per Second (FLOPS).

As per the recently released semiannual Top 500 list of supercomputers, Sunway TaihuLight has been named as the world’s fastest supercomputer title.

​EXPLANATION:

option1: Sunway TaihuLight is the fastest Chinese supercomputer with a LINPACK speed of 105 Peta FLOPS available from 2016.

option2: Titan / OLCF-2 is a supercomputer used for science research available from 2013 & have LINPACK speed of 17.59 Peta FLOPS.

option3: Piz Daint is a supercomputer with a LINPACK speed of 25.3 Peta FLOPS.

option4: Sequoia is a supercomputer developed by IBM as a part of the Advanced Simulation & Computing Program with a speed of 20.13 Peta FLOPS.

1. Supercomputer Piz Daint is named after mountain Piz Daint in the Swiss Alps.
2. LINPACK Benchmark - A measure of the system's floating point computing power.
3. LINPACK Benchmark is used to build a list of Top 500 supercomputers.
4. 1 Peta FLOPS = 10¹⁵ Floating Point Operations Per Second.
5. FLOPS - Floating Point Operations Per Second.