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Green500 Announces the Latest List of the World's Most Efficient Supercomputers

The Green500 website has released its latest list of the worlds most energy-efficient supercomputers. Unlike the famous TOP500 list, which ranks the fastest computers by the number of operations per second, the Green500 list ranks systems by the number of operations per second per watt.

The Shobu supercomputer at RIKEN in Japan tops the latest Green500 list. According to the Green500 website, "The Shobu supercomputer became the first and only supercomputer on the list to surpass the seven gigaflops/watt milestone."

The latest list also marks the continuing emergence of heterogeneous systems that include accelerators as well as conventional multicore CPUs. Accelerator-based heterogeneous systems hold the top 32 spots on the current list.

Power and heat are limiting factors that affect the design of all supercomputers. The super-efficient computers on the Green500 are not as speedy as the behemoth systems that top the TOP500, but the energy-saving techniques deployed with the Green500 systems might one day lead to higher capacity and faster operation for all supercomputers.

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Linux Magazine

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Off the Beat * Bruce Byfield

The Ada Initiative Leaves a Mixed Record Behind It

I was one of the first to write about the Ada Initiative. I was also (as Anonymous Donor #1), the first to donate to it and the first to resign from its advisory board. I've passed through personal distaste and disillusion to indifference, but, having written about The Ada Initiative's start, I feel an obligation to write about its end, and the legacies it leaves behind.

What's the Next Step for FOSS Feminism?

Men who support feminism aren't supposed to criticize. They are supposed to expand the size of a crowd, donate, and keep their mouths shut. However, I have never had trouble being insubordinate, and I have a question I think worth asking: Isn't it time to take FOSS feminism to the next level?

Freedom from Nagging

Freedom from nagging software is not one of the Free Software Foundation's four freedoms. However, after several days of setting up my new Samsung Galaxy Tab 4 to avoid as many unwanted notifications as possible, I wonder if it shouldn't be the fifth.

Productivity Sauce * Dmitri Popov

Restore a Broken Wireless Connection with a Simple Bash Script

Linking a Linux server to the network via a WiFi connection is not the most reliable option, but in some situations it is the most convenient one. So if you choose to use the WiFi connection, it's prudent to have a tool that monitors the connection and restarts the WiFi interface if the connection is broken. The following simple Bash shell script can do just that.

Extension Watch: Convenient Weather Forecast with the Weather Chrome Extension

For the longest time, the Forecast.io service has been my go-to destination for checking current weather conditions and get a forecast for the coming days. The service features a functional and slick interface that provides instant access to key weather data, and it works equally well on large screens and mobile devices. Besides a handy website, the service also offers an API for developers, so it was only a matter of time before a dedicated Chrome and Chromium weather extension saw the light of day. Lo and behold, here comes the Weather Chrome extension.

ADMIN HPC

http://hpc.admin-magazine.com/

Directive Coding * Jeff Layton

With directive coding, you annotate code with compiler directives to take advantage of parallelism or accelerators. The two primary standards are OpenACC and OpenMP.

New Release of Lmod Environment Modules System * Jeff Layton

Lmod is an indispensable tool for high-performance computing. With the new release of version 6, now is a good time to review Lmod and look at its new capabilities.

ADMIN Online

http://www.admin-magazine.com/

IPv6 Security on IPv4-Only NetworksEric Amberg

Even though corporations are looking to move to IPv6, in some situations networks still rely exclusively on IPv4. We discuss ways to minimize delays and unsatisfactory behavior in mixed IPv4/IPv6 IT environments.

OpenStack Kilo Release * Martin Loschwitz

The OpenStack project has released the latest version of its software, code-named Kilo. We take a closer look.

Ticket Management with osTicketDr. Holger Reibold

osTicket is a lean ticket system that limits itself to the core functions of receiving and processing requests.

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