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This super computer is developed by IBM
IBM Sequoia

IBM Sequoia is a petascale Blue Gene/Q supercomputer constructed by IBM for the National Nuclear Security Administration as part of the Advanced Simulation and Computing Program (ASC). It was delivered to the Lawrence Livermore National Laboratory (LLNL) in 2011 and was fully deployed in June 2012.
On 14 June 2012, the TOP500 Project Committee announced that Sequoia replaced the K computer as the world's fastest supercomputer, with a LINPACK performance of 16.32 petaflops, 55% faster than the K computer's 10.51 petaflops, using 123% more sockets than the K computer's 705,024 sockets. Sequoia is also more energy efficient, as it consumes 7.9 MW, 37% less than the K computer's 12.6 MW.
The entire supercomputer runs on Linux, with CNK running on over 98,000 nodes, and Red Hat Enterprise Linux running on 768 I/O nodes that are connected to the filesystem.

Operators LLNL
Location Livermore, Alameda,
SFBA, Northern California,
United States
Power 7.9 MW
Space 3,000 square feet (280 m2)
Memory 1.6 PB
Speed 16.32 PFLOPS
Purpose NW&UN, astronomy, energy, human genome, and climate change

Sequoia is a Blue Gene/Q design, building off previous Blue Gene designs. It consists of 96 racks containing 98,304 compute nodes [1024/rack]. The compute nodes are 16-core PowerPC A2 processor chips with 16 GB of DDR3 memory each. Thus the system contains in total 1,572,864 processor cores [96*1024*16] with 1.6 PB memory. It covers an area of about 3,000 square feet (280 m2). The compute nodes are interconnected in a 5-dimensional torus topology.

1PB = 1000000000000000B = 10005 B = 1015 B = 1 million gigabytes = 1 thousand terabytes