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20140421-1 选题
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Embedded tech and use of Linux at the 2014 GPU Technology Conference
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================================================================================
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This year I attended my first [GPU Technology Conference][1] in San Jose, California (it took place the week after the [Game Developers Conference][2]). Hosted by NVIDIA, the event featured a range of talks from a large array of market segments including automotive, motion picture, gaming, scientific, cloud, system integrators, and startups. The schedule was a mixture of three main keynotes, 500 technical sessions, hands-on programming labs, demos, and an expo floor with a large number of vendors showing their latest work.
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The first keynote took place on the second day, and was delivered by Jen-Hsun Huang, NVIDIA CEO. His talk featured announcements of new architectures such as [Pascal][3] that will power the next generation of GPGPU products from the company, to the [Jetson TK1][4] which is billed as the world's first embedded supercomputer. While Pascal will be used in the next generation of supercomputers and workstations, Jetson is targeted at the embedded market and both make extensive use of Linux. The keynote featured an Audi self-driven car appearing on stage powered by a Jetson-based architecture, and it ended in the announcement that all attendees would receive an Android powered NVIDIA shield.
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The second keynote featured a live demo of the real-time rendering work done at Pixar, showing how the animators have benefited from the latest developments in GPU technology to more effectively gain feedback before final renders. The final keynote was delivered by Dr. Adam Gazzaley, a neuroscientist at the University of California at San Francisco who is working on the use of video games for cognitive enhancement. This featured a live demo with virtual reality using the Occulus Rift, and real-time electrical measurement/feedback into the game.
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One of the major reasons I attended was to learn more about the latest development in visualization, and there were a good number of sessions that looked at this along with the synergy of GPGPU computation and real-time feedback from visualization. More and more supercomputers are now making use of GPGPU accelerators, such as Titan at Oak Ridge National Lab. A large number of sessions were delivered by NVIDIA engineers and developers, but there were also a number of sessions delivered by scientists working on real problems (largely focused on GPGPU rather than rendering/visualization). There was an extensive poster session, showcasing applications across a broad range of areas with the opportunity to talk to the developers. Many of the projects featured were open source and made extensive use of libraries familiar to many of us.
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It is clear that OpenGL is alive and well, with many exciting developments in this area. Interestingly, many of these are being fuelled by growing interest from the gaming industry as they port to new Linux-based platforms such as [SteamOS][5]. Live demos were given on the Jetson in the future of OpenGL session, and the [Approaching Zero Driver Overhead][6] talk from the preceding Game Developers Conference was referenced quite heavily. Several enhancements to the binary driver were mentioned in reference to better supporting scene graphs and real-time ray-tracing using nVidia's Optix platform was showcased and ultimately featured in one of the awards for the work on the [HIV capsid as a showcase][7] of what GPU technology can do to help drive forward progress in scientific research.
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via: http://opensource.com/life/14/4/gpu-technology-conference-2014
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.gputechconf.com/
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[2]:http://www.gdconf.com/
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[3]:http://blogs.nvidia.com/blog/2014/03/25/gpu-roadmap-pascal/
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[4]:http://www.nvidia.com/object/jetson-tk1-embedded-dev-kit.html
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[5]:http://steamcommunity.com/linux
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[6]:http://www.slideshare.net/CassEveritt/approaching-zero-driver-overhead
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[7]:http://blogs.nvidia.com/blog/2014/03/27/researchers-win-third-annual-cuda-achievement-award-three-new-cuda-fellows-named/
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Daily Ubuntu Tips – Make Ubuntu 14.04 Trusty Tahr Perform Better
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================================================================================
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Ubuntu 14.04 Trusty Tahr was released yesterday and if you are one of those who installed it, here are some things you might want to do to improve your experience with it.
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For those upgrading, this may have already be done so no need to do it again, except if you didn’t do it in Ubuntu 13.10.
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Ubuntu right out-of-the-box isn’t complete. There are some packages and tools which improve user experience that are purposely left out by Canonical for legal reasons.
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These packages, if not installed, will make watching movies, playing flash videos and listening to MP3 files difficult. For legal and other reasons, Ubuntu parent company left them out.
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If you wish to do all the above things, you must continue below to learn how to resolve these problems.
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For those who already have Ubuntu 13.10 and wish to upgrade, [read this post][1], or click the link below.
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When you’ve upgraded or installed Ubuntu 14.04, open your command terminal, then run the commands below to install the missing packages which make playing media files easier in Ubuntu.
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sudo apt-get install ubuntu-restricted-extras
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When prompted for your password, enter it to continue. After installing, go and test out your system. This package helps install Adobe Flash Player, MP3 codes so you can listen to MP3 music, movie plugins to watch legal DVD movies and other useful programs.
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So, whenever you install Ubuntu, try installing this package first. This will improve your experience a bit when using Ubuntu.
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There may also be cases where you might want to watch DVD movies that are encrypted. In these cases, you might want to run the commands below.
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sudo apt-get install libavformat-extra-54 libavcodec-extra-54 libdvdread4
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Then run the commands below and you’re done.
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sudo /usr/share/doc/libdvdread4/install-css.sh
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Finally, install VLC media player which is a great program to watch DVD movies in Windows or Linux systems.
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sudo apt-get install vlc
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Hope this helps.
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Enjoy!
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via: http://www.liberiangeek.net/2014/04/daily-ubuntu-tips-make-ubuntu-14-04-trusty-tahr-perform-better/
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.liberiangeek.net/2014/01/daily-ubuntu-tips-upgrade-to-ubuntu-14-04-trusty-tahr-from-13-10/
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How To Watch Netflix In Ubuntu 14.04 With Netflix Desktop App
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Watching Netflix on Windows is easy. You can use the web browser or the desktop app but its not the same story in Linux. It does not work by default in Linux as Netflix requires [Microsoft Silverlight][1] and since it’s “the Microsoft”, it is obviously not available on Linux. So is there no way we can use Neflix in Linux? Of course, there is. In this article we shall see how to watch Netflix in Ubuntu 14.04 (and perhaps older versions such as 13.10, 13.04 etc as well).
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### How to watch Netflix in Ubuntu 14.04: ###
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We shall be using [Pipelight][2], a project that brings Silverlight support to Linux via [Wine][3]. The project is in beta but works quite well. Let’s see how to install Pipelight in Ubuntu 14.04.
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#### Install Pipelight in Ubuntu 14.04 ####
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Installing Pipelight in Ubuntu 14.04 is very easy thanks to the PPA by Pipelight team. Open a terminal and run the following commands one by one:
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sudo apt-add-repository ppa:pipelight/stable
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sudo apt-get update
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sudo apt-get install pipelight-multi
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It’s around 450 MB of download so it may take some time if you have slow internet connection. Also, Pipelight is in beta, therefore check the installation instructions here (in case, if they change it in future).
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#### Enable Sliverlight to play Netflix ####
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Usually silverlight plugin should have been enabled with Pipelight by default but just to make sure, enable Silverlight using the command below:
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sudo pipelight-plugin --enable silverlight
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There will be two conditions to accept, once you do that, it will take some more time to install Silverlight.
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#### Install Netflix desktop app in Ubuntu 14.04 ####
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By this time, you should be able to use Netflix in web browsers. But there is more to it from Pipelight project. The PPA which we just used, also contains Netflix desktop app for Ubuntu. To install the Netflix desktop app, use the following command:
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sudo apt-get install netflix-desktop
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Once installed, you can search for Netflix in Unity Dash.
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At first run, it will install some Wine related stuff. Let it do that. Afterwards, it should run fine:
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### Using Netflix outside USA in Ubuntu : ###
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Did you notice the Netflix desktop app above? It says that Netflix is not available in my country of residence (i.e. France). I am not a Netflix fan but I have written about [how to watch Netflix outside US easily][4]. If you want to watch Netflix outside USA, you can change DNS settings for this purpose. Tunlr was a free service which was shutdown.
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Alternatively, I used [Unlocator][5] while it was free in beta. Extremely easy to use and excellent was the experience. Unlocator is not free anymore but if you could spend around $5 per month, [Unlocator][5] is an excellent DNS unlocker service.
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--------------------------------------------------------------------------------
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via: http://itsfoss.com/netflix-ubuntu-1404-desktop-app/
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.microsoft.com/silverlight/
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[2]:http://fds-team.de/cms/articles/2013-08/pipelight-using-silverlight-in-linux-browsers.html
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[3]:http://en.wikipedia.org/wiki/Wine_(software)
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[4]:http://itsfoss.com/easiest-watch-netflix-hulu-usa/
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[5]:http://goo.gl/QHT0oq
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