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Submission + - Wire-up your home with no extra wiring: Powerline Ethernet Wallplates

unts writes: "HEXUS has a review of a new Power Ethernet Socket made by the appropriately named Power Ethernet. The product is essentially a replacement wallplate for electrical receptacles that includes four powerline ethernet RJ45 connections, providing connectivity throughout a building without the need to run CAT 5e/6 cabling. Performance appears to be good (better than the 802.11n router tested, at least), but what's to stop you simply using regular powerline ethernet adapters where you need them?"

Comment Algorithms vs. hardware (Score 1) 205

Algorithms only work well if they fit well with the hardware they're targeting. You have to make certain assumptions, but depending on what your algorithm is, you should know which things you really need to think about (memory, branching, process communication, disk, ...)

Algorithms that get synthesised into hardware will only work well if they're written in such a way that lends itself to synthesis. There's going to be a huge heap of stuff that doesn't fit well, or doesn't work at all. Writing things like Verilog and even System C is very different to writing a piece of software. And let's not even mention the backend stuff like layout - stuff that can have a big impact on performance of the thing you're spending a lot of money fabricating (oh, I guess I /did/ mention it...)

So, maybe a bit ambitious, but if they've solved even some of the problems and helped bring software development and hardware design closer together, well, that's a good thing.


Submission + - MythTV 0.25 released, new HW acceleration and audio standards support (

unts writes: "The highly configurable Linux PVR, MythTV, has reached the 0.25 release, over 500 days after the previous full release. New features include VAAPI support, E-AC3, TrueHD, and DTS-HD audio, the ability to control other home entertainment devices via HDMI CEC and additions to the API to allow HTTP live streaming. The release notes for 0.25 don't reflect the release status at the time of writing, but should contain most of the relevant changes.

MythTV can be used as a backend (recorder) and frontend (viewer), but can also feed other frontends such as appropriate versions of XBMC. Hopefully the new HTTP streaming API will lead to even more ways to get your video fix from MythTV."

Comment Re:let me answer that with a question (Score 5, Informative) 100

The problem is not just generating the power... it's delivering it and consuming it without breaking/melting. And that's what they're getting at here - getting more FLOPS per watt... not finding out how to push more watts into a system. A silly amount of the energy going into a supercomputer comes out as heat... and a silly amount of energy is then used to remove that heat. Hopefully, by significantly improving the energy efficiency of chips and systems, we can make them a lot more powerful without them needing a whole lot more power. And I haven't even mentioned the mobile/embedded side of the spectrum where its about battery life and comfortable operating temperatures... the same energy efficiency goals apply.

This is the sort of thing we over the pond are very interested in too. Like for example *cough* the Microelectronics Research Group that I'm a part of.

Comment Three examples... (Score 1) 319

My personal web site's home page is 2KB. It's HTML5, no CSS, no JS. My research group site has a bit of all three plus a handful of images and comes in at 125KB. Big website I sysadmin weighs in at 1.1MB. A nice variety there. I think my personal site claims the crown as the fastest loading and quickest to render.

Comment Bristol University supports Linux to some extent (Score 1) 432

For some services such as wifi there are instructions for various flavours of OS - Windows, Mac, Linux, Android. We have Enterprise WPA2 and the university requires you to install their certificate, but they've done a pretty decent job of documenting it for these OSes. Unfortunately some of the software they advocate is very Microsoft or Windows centric. The Computer Science department goes quite a bit further - its lab machines run CentOS. Up until a couple of years ago there were some old Sun machines knocking about somewhere in the Engineering Faculty.

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