Having fallen from the peak of the Top 500 list of super computers a few years ago, Japan’s K compute is back up there again, this time on the Graph 500 supercomputer ranking.
Graph 500 is a relatively new benchmark, from 2010, which seeks to measure supercomputers on data-intensive loads rather than simple speed, “with the goal of improving computing involving complex data problems in areas such as cybersecurity, medical informatics, data enrichment, social networks, symbolic networks, and modeling neuronal circuits in the brain”, said Fujitsi, builder of K computer.
A collaboration between RIKEN, the Tokyo Institute of Technology, University College Dublin, Kyushu University, and Fujitsu got the computer its top place – announced this month at the international conference on high-performance computing (ISC2015) in Frankfurt.
The Tokyo Institute of Technology and RIKEN used 82,944 of K computer’s 88,128 compute nodes to solve a breadth-first search of a graph of 1 trillion nodes and 16 trillion edges in 0.45s, scoring 38,621 gigaTEPS
Sequoia at the Lawrence Livermore Laboratory scored of 23,751 gigaTEPS, and Mira at the Argonne National Laboratoryscored 14,982.
“In June last year we took the top spot with K computer, but we dropped to second place in the rankings of November that year,” said K computer scientist Koji Ueno. “In response, we identified problems in the performance of our previous implementation and developed a new algorithm that allowed us to make some important improvements.”
from News http://ift.tt/1MX0j5G
via Yuichun
沒有留言:
張貼留言