Anonymous ID: 45d01a Nov. 17, 2020, 5:23 p.m. No.11687007   🗄️.is 🔗kun   >>7025 >>7109 >>7204 >>7270 >>7333 >>7414

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Kraken

Kraken was the University of Tennessee’s petascale computing environment funded by the NSF and fully integrated with XSEDE formerly TeraGrid XD. Kraken was a 1.17-petaflop Cray XT5 system containing 18,816 compute sockets and more than 147 terabytes of memory. In November 2009, it was named the third fastest computer in the world.[1] In its final configuration, the XT5 system delivered in excess of 700 million CPU hours per year. The system was designed specifically for sustained application performance, scalability, reliability and incorporated key elements of the Cray Cascade system. Kraken provided the user community a sustained, high-productivity petascale resource for science and engineering applications. The NSF computer system was co-located with the National Center for Computational Sciences, home of Titan, and other major user facilities at the ORNL campus.

 

https://en.wikipedia.org/wiki/National_Institute_for_Computational_Sciences#:~:text=Systems-,Kraken,than%20147%20terabytes%20of%20memory.

Anonymous ID: 45d01a Nov. 17, 2020, 5:27 p.m. No.11687063   🗄️.is 🔗kun   >>7204 >>7270 >>7333 >>7414

OCTOBER 8, 2009

 

Kraken becomes first academic machine to achieve petaflop

The National Institute for Computational Sciences' (NICS's) Cray XT5 supercomputer—Kraken—has been upgraded to become the first academic system to surpass a thousand trillion calculations a second, or one petaflop, a landmark achievement that will greatly accelerate science and place Kraken among the top five computers in the world.

 

Managed by the University of Tennessee (UT) for the National Science Foundation (NSF), the system came online Oct. 5 with a peak performance of 1.03 petaflops. It features more than 16,000 six-core 2.6-GHz AMD Istanbul processors with nearly 100,000 compute cores.

 

In addition, an upgrade to 129 terabytes of memory (the equivalent of more than 13 thousand movies on DVD) effectively doubles the size of Kraken for researchers running some of the world's most sophisticated 3-D scientific computing applications. Simulation has become a key tool for researchers in a number of fields, from climate change to materials.

 

"At over a petaflop of peak computing power, and the ability to routinely run full machine jobs, Kraken will dominate large-scale NSF computing in the near future," said NICS Project Director Phil Andrews. "Its unprecedented computational capability and total available memory will allow academic users to treat problems that were previously inaccessible."

 

For example, understanding the mechanism behind the explosion of core-collapse supernovas will reveal much about our universe (these cataclysmic events are responsible for more than half the elements in the universe). Essentially three phenomena are being simulated to explore these explosions: hydrodynamics, nuclear burning or fusion, and neutrino transport, said UT astrophysicist Bronson Messer.

 

At the terascale, or trillions of calculations per second, Messer and his team were forced to simulate the star in 1-D as a perfect sphere and with unrealistic fusion physics. "Now, however, we are getting closer to physical reality," said Messer. "With petascale capability, we can simulate all three phenomena simultaneously with significant realism. This brings us closer to understanding the explosion mechanism and being able to make meaningful predictions."

 

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