Wireless PCIe To Enable Remote Graphics Cards
J. Dzhugashvili writes "If you read Slashdot, odds are you already know about WiGig and the 7Gbps wireless networking it promises. The people at Atheros and Wilocity are now working on an interesting application for the spec: wireless PCI Express. In a nutshell, wPCIe enables a PCI Express switch with local and remote components linked by a 60GHz connection. The first applications, which will start sampling next year, will let you connect your laptop to a base station with all kinds of storage controllers, networking controllers, and yes, an external graphics processor. wPCIe works transparently to the operating system, which only sees additional devices connected over PCI Express. And as icing on the cake, wPCie controllers will let you connect to standard Wi-Fi networks, too."
That is coooooooooooool.
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A solution to all of OnLive's problems! Now they'll be able to put an access point in every neighborhood!
Mod me down, my New Earth Global Warmingist friends!
what if I don't read Slashdot?
To those in the know, why will this succeed where UWB/wireless USB failed in the market?
Remote graphics seems like an even more esoteric need than the remote mass storage, printing, cameras that UWB would have offered?
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We'll soon have ONE MORE wireless signal to keep track of, when all those we already have work so well together!
This could take rickrolling to a whole new level.
Nice but what's the range, and is the spectrum licensed or will we end up dealing with a "tragedy of the commons" much like the 2.4 Ghz band?
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Beam it into my brain.
For an external graphics card, I have to wonder if its 7gbps throughput going to be limited by the time necessary to transform wireless packets into FSB data streams on either end. I suspect the bottlenecks there might be substantial.
That said, if it works as advertised, this could be the new holy grail for laptop gaming: no more would graphics power be limited by soldered-in cards and upgrades requiring a replacement laptop; just add a few more wireless graphics cards.
That sounds like a wonderful idea and the thought of having a wireless graphics card for a laptop is very tempting.
But how much performance can we really squeeze out of it? I mean, for a power user who wants a higher resolution than his integrated card can offer, it's a godsend. But for gaming? No way.
Also, I'll admit I'm not very wise on the technical details of PCIe, but if you're putting all of the above-mentioned devices in contention for 7Gbps of bandwidth, there's really not a lot you can milk from it in terms of real horsepower. One PCIe 2.x graphics card would shut out everything else, or be severely lacking in performance. If you want PCIe 3.x, forget about it.
OTOH, anyone gaming on a laptop and expecting "performance" comparable to a desktop is daft.
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Just wait until the public interest groups find out. Given some of the other uses for the 60 GHz wavelength it's only a matter of time until WiGig gets accused of promoting child porn...
wi-pi anyone?
Pci-e x1 is to slow for all of that video will suck at that speed and then you want to add more io to it?
render and then encode the video. Many games can already be played like this. It seems like offloading the video card would only add latency to the process.
Can I use this with my phone?
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...i am terrified by the security implications of that...and would be totally annoyed if my basic computer devices stopped working when the microwave was running.
The best feature of this proposed standard is that if you place a ceramic mug directly between your CPU and the external graphic processor, it will keep your (coffee, soup or whatever) steaming hot, all day long! Those days of long WoW raids with only cold beverages and snacks are over!
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I will admit some incredulity when I read the title. "Wireless what?!"
Very cool stuff if it materializes.
Imagine a small lightweight machine with say an ULV i3 or i5 CPU, small-ish screen and weak-ass integrated graphics. Place the machine on it's docking pad (No connectors to get bent or boards to break) and suddenly it's got (wireless?) juice and access to kick-ass graphics, and a big monitor, as well as whatever else is in the base-station.
A desktop replacement that remains light and portable for road warriors, with none of the fragility associated with docking connectors. With those transmissions speeds I presume this is going to be a point-blank range affair, so snooping shouldn't be (much?) of a problem.
I've been wanting an external graphics card for my laptop for a while now, unknowing that the technology was in development. This is awesome.
In the beginning, there was null.
Seriously?!! With timing issue and precision required by the GPU to interface with the rest of the system, do we really want it bridging over WiFi (60Ghz)? Of all the devices, this is one peripheral I'd want to leave with physical bus access (electron flow). That, and the CPU and RAM.
Life is not for the lazy.
PCIe over Wireless at 60GHz sounds like a security nightmare. Of course, not one seems to think about tha... oh shiny!
I thought they wanted to bring the GPU *closer* to the CPU for performance's sake.
So this seems counter-intuitive.
I'm thinking wireless monitors. There is more then enough bandwidth there to drive some really high resolution screens. Just pop your laptop near your desk setup and poof, about ten times the functionality. Not to mention popping this sucker into a smartphone would allow another large degree of mobile computing.
Now hidden cameras will be able to stream up-skirt videos in HD!
I've abandoned my search for truth; now I'm just looking for some useful delusions.
like cable vod? wait having it at the headend sounds like a better idea then what they have now.
Talk about thinking, ahem, out of the box!
The choice of the PCI bus being wireless is interesting. Essentially they are turning every peripheral into a hot-swap device. Good luck getting ATI/NVidia drivers for that one. The amount of state stored on the GPU is just astronomical (1GB texture memory! not to mention the entire register space, maybe some context switch information). The corner cases on that one would be brutal... Seems like they would be better off using a more stateless interconnect for wireless graphics, such as DVI/TMDS. Overall practical considerations would seem to relegate this to a secondary display, which is useful, but definitely not "killer".
Same concept applies to any PCI peripheral over this sort of interface (well, any PCI peripheral with state on the peripheral itself).
Wilocity told us that wPCIe can push bits at up to 5Gbps (625MB/s), and that the spec should move "quickly" to 7Gbps (875MB/s).
If you consider that PCIe 16x is 16GB/s (128Gbps), this is very underwhelming. Call me a sceptic but I don't see a real-world application of "wireless PCI-E" that is slower than a 1-lane PCI-E. Well, at least a real-world application regarding graphics...
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Let's say I've got even a little building with 50 people who want to use this. Will I be able to pack 50 of these point-to-point units into a building and have all of these systems perform at peak capacity without stepping all over each other? That would be amazing.
And, aside from the technical issues of getting it to work well in a dense environment, there's still one cord that needs to be connected to the laptop. Power. If I have to plug that in, I may as well snap the laptop into a docking station and skip the wireless connection entirely. One connection is one connection and I won't have to worry about interference, security, bandwidth, etc.
As a skeptical person who usually maintains a scientific 'prove your crazy theory if you expect my buy in' ideology...
I have to say if you had to bet money on what wireless technology actually WILL cause cancer and your options are cell phone, wireless access point or wireless PCIe sounds, I think wireless PCIe would win.
The diagram shown at TFA indicates a single PCIe lane (x1) is provided. What PCIe devices would benefit from being wireless?
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I wouldn't be so interested in running a graphics card. I'd be more interested in an enclosure/docking station with hardware raid controller that could accept a couple of 3.5" disks. Give me a couple of PCIe slots, so I could plug-in, for example, a quad port NIC. Built-in battery in the docking station would be nice.
Wouldn't this allow huge server-like GPU-farm-like devices to be wirelessly hooked up to any extremely lightweight machine that's nearby via wireless? Of course the wireless latency would be horrendous, but if it could be improved somehow then I imagine this would be amazing!
In other news, why don't they work on using cables first? A fibre-optic link to an external GPU sounds brilliant. (since GPU's introduce a lot of heat, and size is a problem, this will eliminate those problems)
At 60GHz this will behave more like free space optics than radio waves... just hope nobody holds a sturdy sheet of paper between a pair of endpoints :P
what are you doing where all the people need to be pushing 7G constantly across the bus?* If that's the case, the it's probably not for that situation. Most people in most office don't need to be using that kind of data all the time.
You could create a reliable system so you could take your laptop anywhere and have it display on a large screen or projector. so you walk into a meeting room and it links up. You want to display something on your TV, it links up.
Perhaps you have a hand held device and want to share on a bigger screen? and so on
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Sounds like this has the potential to revitalize the desktop market.
While the wireless docking application for laptops sounds like it has great potential, the promise of using this technology to supercharge low-cost tablets, netbooks and mobile devices when in range of a desktop seems too good to pass up. This would provide a strong incentive for me to buy everything in that ecosystem.
I don't know about you, but I don't want to have something operating at 60GHz sitting in my lap, thanks... I'll stick to super-long HDMI or DVI cables if I need to route a monitor signal.
Hire a Linux system administrator, systems engineer,
Wireless PCI Express? Awesome. I'll just walk by with a specially designed device, master the bus, and DMA the entire contents of your RAM over to a laptop. Then I'll change some interesting bytes here and there, and DMA it back.
This sounds like the dumbest attack vector since FireWire came out with physical DMA support.
Did you miss the part where they're talking about docking stations with video cards built in, USB3, network, etc.?
"The first applications, which will start sampling next year, will let you connect your laptop to a base station with all kinds of storage controllers, networking controllers, and yes, an external graphics processor."
I don't know how your company works but, around here, we expect people to show up at roughly the same time every day and...erm...work. Like simultaneously. And, yes, many of our laptop users prefer docking stations to plugging and unplugging power/network/video/keyboard/mouse/monitor every time they come and go. And, yes, quite a few people use their laptops exclusively. In fact, very few people have both a laptop and a desktop. What would be the point?
So, yeah, the scenario described as the first application of this new technology that we can expect to see involves people pushing lots of data across the connection for long periods of time.
they came up with something like this. I just got a new graphics card and the damn thing barely fit into the case(standard ATX). I'd be interested to see how they expect to power an external graphics card and onboard wireless. I recently upgraded my old 8800gtx to a new 250gts(x?)and I had to upgrade from a 450 to a 700 watt psu. I'm not running any high end stuff (quad core, 2 hdd's and the 250)but imagine if I were. I'd be surprised if you could run a serious card remotely but it would be nice. lrick has the right idea, wireless monitors are the right way to go with this.
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There's really no point to it, because you still need another box, a "computer" to wirelessly attach to that has the kick ass graphics and so on..we have that already, called a desktop, and they are cheap now, too. You would still be plopping down your integrated graphics lightweight netbook next to what would basically have to be another full computer, or dang close to it, something that houses the big graphics card and the assorted other stuff it needs to function. You aren't eliminating a box at home, so there's not much of a point to it. If it would completely eliminate a box, sure, but it can't by default, and if it can't, might as well just use your desktop when at home. The freq this proposed system works at only works at extreme close distances, like a few feet at the most, you won't be running this from server two floors away in the basement, so really...just use your ethernet cable then.
Let me think about this... 10lb computer in my lap, $500 wireless video card across the room by the screen... OR... Computer across the room by the screen and 10oz, $30 wireless keyboard in my lap. What am I missing here? Oh wait, I want my neighbors to not only steal my internet connection, I'd also like them to be able to stream everything I do on my desktop live.
Wait, so you're saying they'll be able to send a continuous color video stream THROUGH THE AIRWAVES??? Wow, that's so incredible! I bet they wish they'd had this technology back in the middle of the last century...
"Yo dawg, I heard ya like being wireless, so we made a wireless bus so you can be wireless while you go wireless."
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I herd, you like Windows drivers, so we have put a low-level low-latency bus protocol supported by Windows driver on top of a low-reliability high-latency protocol supported by Windows driver, so you can use Windows drivers while you use Windows drivers.
Seriously, there is no excuse for this, other than providing this kind of illusory compatibility. Properly engineered systems have protocols optimized to efficiently use media throughput while taking latency into account. This thing can be best described as DMA over Jenga.
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Now all we will need is wireless power!
Though I think this already exists, based on some of these supposed Office freak-out videos where some bloke goes crazy and tosses a monitor, which mysteriously does not have any cables connected! One might assume that it was staged, but it's wireless power and wireless graphics!
I suppose we could do away with the tracers on the mainboard completely. Minaturize the chip so that it can be embedded in the greatest of the required technologies: RAM, CPU, GRAPHICS, SSD. All of these devices would have the range of a few feet - the standard size of a full size atx case. Increase power draw for longer ranges for the display, keyboard and mouse/joystick/gesture pen. Include AES 256bit encryption and aconvient reset button for rematching components. Include a "volunteer" acknowledgement packet wherein if no other device is in range it automatically mates with the closest of components.
Now all I have to figure out is how to include multiprocessor situations, and a negotiation technique for automatic server farms with cloning and failover.
Dang.. I'm sure I'm forgetting something!
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Put a wireless power charger for the laptop batteries and you may have created the world's first fool proof and universal docking station for laptops and the dumb ass fools who use them.
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(Slightly off topic) Now what I'd like is to be able to either wirelessly or via a snap-in dock have my laptop do a 'Vulcan mind-meld' with my desktop PC and be able to all of a sudden use the processing power and storage of both. That is for them to appear as a single and more powerful computer but for them to be usable separately and then merge my home directory and installed software when they come back together.
Has anybody done this?
I disagree. Its easy enough to move around my house connecting to power as I have power outlets all over. I don't have docking stations all over nor is it nearly as convenient to carry the docking station around. So if you're always at your desk, you may have a point; otherwise, this does have an advantage. Is it enough of one? I'm not convinced, but it would be cool.
Even 60hz has a very limited transmission range, I am preferring the wired option above the wireless; because anything which gets sent to the air can get intercepted and influenced by any nearby devices or transmitters.
I like the idea to separate elements from a your PC and start to wire(lessly) connect them together; so not only your pc can be used at your office, but also in your living quarters, bedroom or anywhere where you got a station with a monitor. Security has to come in mind and a wired option should be provided.
One network cable, a power cable and the cable towards the screen would be only one cable more for more speed, reliability and security. Wireless tends to get freaky with certain factors.
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It's called a TV, all i need is a DVB transmitter attached to my PC and i'm set
I suspect the use cases for this are a bit different that what you want. What you quoted says base stations, not docking stations, because if you actually dock the laptop in a station, why do you need wireless. So they are talking about situations where you want to access the peripherals without physically docking the computer.
This tech operates at 60GHz, which effectively restricts it to line of sight. Although this will restrict where you could place the laptop in relation to the base station, it will mean you wouldn't get interference from a neighbouring cubicle (if that was where you used it) let alone adjacent rooms.
I'm not convinced of the utility of this tech, but if it can be made cheap enough that it gets included in most laptops it will probably be used for something.