작성일 : 18-07-12 20:43
[일반] MIT Technology Review , China is delayed on its exascale computing project
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MIT Technology Review
07.11
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The files you need to make your own gun can now be shared online

A decision from the US Department of Justice allows the online distribution of computer-designed gun models.
Looking back: Cody Wilson created and fired the first fully 3-D printed gun in 2013. The gun’s design files were downloaded hundreds of thousands of times in a few days. Then the State Department told him to take the files down.
The news: In 2015, Wilson filed a lawsuit which claimed that by stopping him from uploading his 3-D-printable model, the State Department violated his right to bear arms (2nd Amendment) and to freely share information (1st Amendment). In a settlement just reached with the Department of Justice, Wilson essentially won. Digital weapons files can now be legally distributed on the web.
But... Makers will need to have a knowledge of gun mechanics, 3-D printing, and other manufacturing technologies. While Wilson has lowered some barriers to creating undocumented weapons, home-based setups will have to advance mightily before your neighbor will be able to make an arsenal of AR-15s.

Tesla says it will build a factory in China that can produce 500,000 cars a year

The move could help cement the brand in China and circumvent steep tariffs.
The news: Tesla has signed an agreement to build what it’s calling “Gigafactory 3” in Shanghai. It’s expected to take two years to complete.
Full speed ahead: When the facility hits full throttle, Tesla estimates, it will be able to churn out 500,000 cars a year for Chinese customers—though meeting production estimates hasn’t been one of Tesla’s strong suits.
First of its kind: Tesla will be the sole owner of the new production facility. In the past, outside car companies were required to partner with Chinese companies.
Why it matters: Tesla has been hit hard by the trade war between the US and China—it’s had to raise prices on its Model X and Model S cars by $20,000 for Chinese customers. The company has now decided to move manufacturing overseas to lower costs.

China and America are racing to build the next big thing in supercomputing

It’s everyone’s favorite subject: exascale computing! Really, though, it’s important, and China and the US are battling to achieve it first.
Exa-what? We’re talking about a machine that’s capable of a billion billion calculations per second, or one exaflop. Every person on earth would have to do a calculation every second of every day for over four years to match that. Researchers could use the power to run massively complex simulations that can help advance fields like climate science, genomics, renewable energy, and artificial intelligence.
The racers: China had a plan to produce an exascale machine by the end of 2020, but as our own Martin Giles reports, that date is likely slipping. America, meanwhile, has committed to delivering its first exascale computer, Aurora, in 2021.
Size matters, sort of: Exascale computing is a long-sought (and long-fought-over) goal. But raw computing power isn’t the true test of success here; it’s how well it’s harnessed to solve some of the world’s toughest problems that really matters.

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