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Simulating 1 second of real brain activity takes 40 minutes 83K processors

The K computer: it's big.

A team of Japanese and German researchers have carried out the largest-ever simulation of neural activity in the human brain, and the numbers are both amazing and humbling.The hardware necessary to simulate the activity of 1.73 billion nerve cells connected by 10.4 trillion synapses (just 1 percent of a brain’s total neural network) for 1 biological second: 82,944 processors on the K supercomputer and 1 petabyte of memory (24MB per syapse). That 1 second of biological time took 40 minutes, on one of the world’s most-powerful systems, to compute.If computing time scales linearly with the size of the network (a big if; I have no idea if this would be the case), it would take nearly two and half days to simulate 1 second of activity for an entire brain.Still, the researchers are excited by what they’ve accomplished. According to a quote from project leader Markus Diesmann in the press release announcing the simulation: “If peta-scale computers like the K computer are capable of representing 1% of the network of a human brain today, then we know that simulating the whole brain at the level of the individual nerve cell and its synapses will be possible with exa-scale computers hopefully available within the next decade.”

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02 Aug
Marly Cho @BITechWatch
Simulating 1 second of real brain activity takes 40 minutes 83K processors: Researchers have simulate... http://t.co/MlwAC9J4Yk #bigdata
02 Aug
Planet big data @planetbigdata
Simulating 1 second of real brain activity takes 40 minutes 83K processors: Researchers have simulate... http://t.co/5W0lGn6XGm #bigdata