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Submission + - SPAM: China homegrown electronic and world's fastest supercomputer 1

Taco Cowboy writes: Clocked in at 93 Petaflop (or 93,000 trillion calculations per second), the new ShenWei (roughly translates to The Wrath of God in Mandarin) TaihuLight tops the world's fastest supercomputer list

Twice as fast and three times as efficient as the previous leader Tianhe-2, the new ShenWei Installed at the National Supercomputing Centre in Wuxi and comprised of 10.5 million locally-made processing cores grouped into 40,960 nodes (with each node having 260 processor cores) the computer runs on the Linux Operating System

The processor is divided into four core groups, each with 64 computing processing elements (CPE) and a management processing element (MPE). Each core group also includes a memory controller delivering an aggregate memory bandwidth of 136.5 GB/second on each socket. It runs at a relatively modest 1.45 GHz and supports just a single execution thread per core

The chip was manufactured at the National High Performance Integrated Circuit Design Center, in Shanghai. The process technology node has not been revealed

Memory-wise, each node contains 32 GB, adding up to a little over 1.3 PB for the whole machine

Its main applications include advanced manufacturing, weather forecasting and big data analytics, wrote Jack Dongarra in a paper about the new machine ( [spam URL stripped]... )

Pierre Ferragu, tech analyst at Bernstein, said the ranking showed that China was “pulling together all the building blocks of an independent semiconductor value chain”

The system is also rather light on cache. In fact, it really doesn’t have any in the L1-L2-L3 sense. Each core is allocated 12 KB of instruction cache, along with 64 KB of local scratchpad

From a power standpoint though, TaihuLight is quite good. It draws 15.3 megawatts (MW) running Linpack, which, somewhat surprisingly, is less power than its 33-petaflop cousin, Tianhe-2, which uses 17.8 MW. TaihuLight’s energy-efficiency of 6 gigaflops/watt is excellent, which will certainly earn it a place in the upper reaches of the Green500 list

The interconnect, simply known as the Sunway Network, is also a homegrown affair. It’s noteworthy that the older Sunlight BlueLight machine employed QDR InfiniBand for the system network. The TaihuLight one, however, is based on PCIe 3.0 technology, and provides 16 GB/second of node-to-node peak bandwidth, with a latency of around 1 microsecond

Running MPI communications over it slows that down to about 12 GB/second. Such performance is pretty much on par with EDR InfiniBand or even 100G Ethernet, although the latency seems a tad high (it depends on exactly what’s being measured, of course). In any case, it looks like the design team opted for simplicity here, rather than breakneck speeds using exotic technology

“The latest list marks the first time since the inception of the TOP500 that the US is not home to the largest number of systems,” wrote the authors of the ranking. “With a surge in industrial and research installations registered over the last few years, China leads with 167 systems and the US is second with 165”

Info compiled from the following list of url:
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Link to Original Source

Submission + - Users to blame for Windows ten reputational damage (

An anonymous reader writes: The Windows 10 Insider Preview was an exercise in "democratic design," with the hope that Microsoft would regain its reputation as a "listening company." But it was the kind of democracy where a few people vote early and vote often. Windows Insider boss Gabe Aul treated the results of user feedback as if they were a referendum. However, 2015 was the year pollsters got it badly wrong, because their samples were not representative, and "user driven" design suddenly didn't look so smart.

Submission + - Bill Introduced to Require ID When Purchasing "Burner Phones" (

insitus writes: Congresswoman Jackie Speier (D-San Francisco/San Mateo), introduced the Closing the Pre-Paid Mobile Device Security Gap Act of 2016, which would require people to present identification when purchasing “burner phones” and other pre-paid mobile devices, as well as requiring merchants to keep records of those purchases. “Burner phones” are pre-paid phones that terrorists, human traffickers, and narcotics dealers often use to avoid scrutiny by law enforcement because they can be purchased without identification and record-keeping requirements. This bill would close that legal gap.

Bees Communicate With Electric Fields 133

sciencehabit writes "The electric fields that build up on honey bees as they fly, flutter their wings, or rub body parts together may allow the insects to talk to each other, a new study suggests. Tests show that the electric fields, which can be quite strong, deflect the bees' antennae, which, in turn, provide signals to the brain through specialized organs at their bases. Antenna deflections induced by an electrically charged honey bee wing are about 10 times the size of those that would be caused by airflow from the wing fluttering at the same distance—a sign that electrical fields could be an important signal."

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