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New Internet2 Land Speed Record
SquadBoy writes "An international team set a new record for Internet performance by transferring the equivalent of an entire compact disc's contents across more than 7608 miles (12,272 km) of network in 13 seconds. The rate of 401 megabits per second achieved in transferring 625 megabytes of data from Fairbanks, Alaska to Amsterdam in the Netherlands is over 8000 times greater than the fastest dial-up modem."
Just in time for Doom 3 :)
I know I'm going to hell, I'm just trying to get good seats.
If I'm not mistaken, that's approximately as fast as a 7200rpm ATA/66 drive can transfer data, say, to another partition on the same drive, or what have you.
Palaces, barricades, threats, meet promises
get your porn here, red hot, barely legal, hundreds of megs!
Take a notice, that Internet2 project is right now only for universities and big companys... And right now - for testing pourpourses only...
(sorry for my bad english)
* Origin: XBase BBS (2:490/4100) Well the good old days may not return and rocks might melt and sea may burn.
The RIAA and MPAA have both come out proclaiming Hayes' new 4800 baud modem with MNP5 as the best connection system possible, and are subsidizing the conversion from broadband to these hardware devices with a $50 rebate until the end of the year.
i cant even do that in my office network! our computers are 5 feet away from each other...
---- El diablo esta en mis pantalones! Mire, mire!
Marge: "Does anyone need that much porn?"
Homer (drooling): "One million times faster...."
Suddenly my DSL no longer seems fast enough.
The Moo went "Cow!"
401 Mb/s is great, but what sort of ping rates were they getting?
Slashdot's first reaction to VMware
Shit, I passed for than that this morning.
Damn Montezuma!
I have been pwned because my
The rate of 401 megabits per second achieved in transferring 625 megabytes of data from Fairbanks, Alaska to Amsterdam in the Netherlands is over 8000 times greater than the fastest dial-up modem.
Must be nice to have a pipe that's not full of SPAM, pop-up ads, Code Red, Nimda, SQLSnake, Gnutella, ARP scans from the braindead fucks at my ISP, AIM crap...
--saint
Is that why my ping spiked....?
(/local/home/curiosity)-#who -u|grep thecat|cut -c 44-49|xargs kill -9
picture this: you're at the University of Fairbanks, and there's warmth to stimulate action that would satiate those college-age hormones. But wait! Someone you know in Sweden has Debbie Does Dallas on divx! Huzah! You are now only going to have to wait a few seconds to start wanking, as opposed to the normal hour for transfer of the relaxation material.
The internet is full of wonders.
Some day, I'll have that kind of bandwidth running to my home. And my ISP will still disallow my personal telnet server because of the strain it will put on the network.
Finally finding the pr0n becomes the bottle-neck.
Pr0n jokes are obligatory for this kind of story, read the manual.
Somebody's law says the more space you have the easier it is to fill with junk - be it drivespace or bandwidth. Just like 28.8 used to kick ass, I think that 400 mbps will become slow. How soon though?
I created this account just so I could comment on this story
News of faster internet made HIllary Rosen faint.
Someone shouted, "quick get some smelling salts".
Someone else said, "Here, use this sharpie marker."
And of course, Debian was there first :)
Just in time for AOL's umpteen-millionth release, the AOL Super-Shinny-Un-named-Metal Release will succeed Gold, Platinum, and Titanium with a ultra-high connection speed. Now you can StarWars.mid in only 1 hour and 42 minutes! 99.3x10^-4 times faster than with AOL 7.0!
Is this thing on?
...when they realised it was Britney Spears' latest album, they sent it straight back even faster.
Amsterdam and Alaska are separated by water, so I don't see how this can be a new land speed record, unless Jesus is involved.
If I am not mistaken (and I could be, I suck at maths).
It traveled at about 3,345,350 KM/H, or about 5,352,560 MPH...
WHOA!
Yeah, but how many Libraries of Congress is that? Until they release their accomplishment in Libraries-of-Congress-per-second, it means absolutely nothing to me, or anyone else. Right?
Lack of eloquence does not denote lack of intelligence, though they often coincide.
Debian
Now if only Debian was the sort of corporate entity that would use this for it's own propaganda purposes! Maybe IBM will run a few ads of people viewing 9000x6750 streaming video on their Debian 7x7 (hmmm, 6x8 head G200 plus another G200!) xinerama display PC!
Never underestimate the dark side of the Source
...a beowulf cluster of those! ;)
John Maynard Keynes: "When the facts change, I change my mind. What do you do?"
I think we should give props to those NIC cards running on the linux kernel ethernet drivers
Why is a seperated network?
No routers bridge the Internet and Internet2?
scientist: across 7625 miles (12,272 km)
marketroid: no, no you need to say "more than" 7625 miles
scientist: but that isn't true, you have to subtract a bit before you can say "more than"
marketroid: a bit? like how much?
scientist: oh I don't know, subtract 10 or 25 miles
marketroid: we'll subtract 17 miles and say "more than"
lame website: "across more than 7608 miles (12,272 km)"
... and bandwidth restricts it to 128K...
IBM had PL/1, with syntax worse than JOSS,
And everywhere the language went, it was a total loss...
Strap a CD to a hypersonic jet travelling at 944,000 m/s and what have you got? Well... nothing really, it would burn up in the atmosphere.
This article, I feel is more than a little vauge. What did they use to transfer? Was it just over electrical/telephone lines, or did they use optics? What kind of compression was used, and what kind of signal boosters/optical repeaters were used in sending this. All of these items could be used to affect the speed of transfer, and well, the article just doesn't say. I mean in theory, one could build a router from parallel to serial that could take data at 9.6 terabits/sec. How are they actually measuring things? Just the time between there and here? Using full optical lines, wouldn't they be able to set the record at c * the index of refraction of the fiberoptic line? It would just be a matter of putting all the data into one block of light.
Also the article suggested only one way communication, what happens with error checking and such?
=================
Unix is very user friendly, it's just picky about who its friends are.
Why do they only tell us the bandwidth? What about the latency? Until they tell us the latency, I'm only drooling out of one side of my mouth.
Why on earth would you run telnet instead of SSH? Do you LIKE sending your password over the wire in the clear for any idiot to sniff?
...as I'm sure the original internet was when it was first tested(arpanet?). Then came the masses, and look at what we have now. The internet 2 will eventually suffer the same bottlenecks as the original we use today.
"Adequacy.org: Where congenital stupidity is not an option, but a requirement."
Well as raport states, there were two standard PC's running on debian. Well what it means? It means that bottleneck should be on those two machines. As atleast I don't think that 64bit/66MHz PCI bus is standard on PC world... well... and there are limitations about 300/400Mbit on standard 32bit/33MHz PCI bus, as i remember. Also i think that data used for benchmark was random seed, not from CD or hardisk, becose CD's and HDD's of standard PC are much slower...
* Origin: XBase BBS (2:490/4100) Well the good old days may not return and rocks might melt and sea may burn.
transferring the equivalent of an entire compact disc's contents across more than 7608 miles (12,272 km) of network in 13 seconds
It's probably the DNA codes for a polar worm.
Downloading woody off that machine would definitely make up for pushing back the stable release date!
This is left as an exercise for the reader.
Debian Woody in less than two minutes
For a moment there, I believed that Woody will be released in the next two minutes. Ah well... maybe when I get the bandwidth, Woody'll reach stable...
For larger gap to emerge between the current consumer internet (dial-up, dsl, cable) and a new form of Internet? I can see one (the current) becoming a lowlier, cheaper, seedier, less secure, internet "underground" if you will, and a new one emerging that's faster, more standardized and secure, but more expensive, and used by high-class citizens and businesses. Any thoughts?
I belong to the ______ generation.
This has been going on for a long time, of course. Actually, we (in McIntosh hall) once showed a swedish nurses porn flick on the wall of the neighboring residence hall (it was Nerland hall). The Nerlandites weren't amused; I'm not sure why. We DID invite them to come over and watch.
This was a 16mm film, long before digital movies were practical (about 1982 or '83).
is over 8000 times greater than the fastest dial-up modem
;-). And the fastest car on earth goes 8000 times faster than I crawl! Next time let's compare it to at least DSL!
I just LOVE sem-relevant comparisons!
So close and yet so far from the world's perfect ID number
Napster on Internet 2? Damn these guys are quick!!!
My guess is that the traffic went around in swirls.
"Debian Woody in less than two minutes"
Any woman will tell you waiting more than 90 seconds for a "Debian Woody" is unacceptable. My personal best is nearly 1/3 of that.
Its a joke..get it? No...RTFM
"Get them before they get....
It's funny how the expressions for the top end of sneaker-net have changed over the years. In my college days, it was a station-wagon full of mag tapes. (You know, the old 80 MB reel to reel things you see in 70s era TV shows.) In my father's day, it was a car full of punch cards. (They were the..., oh never mind)
Let's see now...
With the back seat folded down, you probably could get about four rows across and eight down, each say 15 high. That gives us 480 tapes, about 38 GB. At 60 mph, we get 230 GB mph or 640 MB mile per second. These guys just did 7608 * 401 = MB miles per second, or 3 TB miles per second, beating my old white station wagon by a factor of 4800.
Ok, I'm impressed.
They actually had it ready 2 weeks ago, but were unable to transfer the cd until they used a felt tip marker around the edge.
We all get along together like tornadoes and trailer parks.
Every year there is a competition at the high performance conference (Supercomputing 2001 was this last one). It is entitled the 'Bandwidth Challenge'. This last year, NERSC took first place with a 3.3 gigabit/second sustained graphically represented simulation using seaborg.
Now, admittedly, it wasn't intercontinental, only from Oakland, Ca to Denver, Co....:D
Do you know why the road less traveled by is littered with the bones of the unwary?
I don't think anybody at the University of Alaska-Fairbanks even knew this was happening. I think those crazy Dutch just slurped down the image from our local linux mirror (which is maintained by our LUG).
It seems sort of bad form. The mirror is there for everyone, but bandwidth for the sake of bandwidth....
And now of course, EVERYONE will start trying to see how fast they can suck down our bandwidth. I bet my internet connection at work is terrible tomorrow.
assuming 64 byte long icmp echo/reply packets and using my kcalc:
64*8 / 401 mbps = 1.218xE-6 seconds (one way)
1.218xE-6 * 2 = 2.435xE-6 seconds (roundtrip)
Hmmm....
1/2.435xE-6 seconds * 7608 miles = 3124435318 miles/second
(6248870636 mi/sec if you consider round trip like you did)
... which is A FEW ORDERS OF MAGNITUDE faster than the speed of light. This is due to an error in your math, seeing as how you can't compute a ping time based on throughput. I suggest that you learn a little bit more about how networking REALLY works (and a bit of physics too) before you try this kind of parlor trick again.
Great! Can it be used to host the Doom 3 videos?
I'd hit my monthly DL limit in under 10 minutes :-(
What would I do for the rest of the month?
12272 km / 13 seconds = 944km/s :)
the question now is how fat the pipe has to be
to beat the speed of light ?
Does anybody remember this urban legend?
There was a IT engineer based in London who was sacked because he couldn't get the ping rate between the London and N.Y.C. corporate offices below 20ms.......His boss didn't see the "speed of light" as a valid excuse!!
Ripping an new rectum in the fabric of spacetime.
Internet2 page has some events and workshops that look like they might be really good deals. I registered for the IPV6 3 day workshop at the University of Utah for only $100.00 - as long as it doesn't suck, that should be money well spent.
Cut to the Comic Book Guy on his PC. He's typing away. Oh, Captain Janeway... Lace -- the final brassiere!
Despite having found what he wants, his modem is very slow and he's impatient.
Comic Book Guy: Ugh, this high-speed modem is intolerably slow!
The picture slowly appears, line by line, but as soon as it gets to the cleavage, an ad for "Internet King" (Homer) appears and covers any nudity on the screen.
Comic Book Guy: What the-- the Internet King... I wonder if he can provide faster nudity.
Comic Book Guy sees one of Homer's ads on a porn site, So Comic Book Guy goes to Homer's "office"!
At the office...
Homer: Welcome to the Internet, my friend, how can I help you?
Comic Book Guy: I'm interested in upgrading my 28.8 kilobaud Internet connection to a 1.5 megabit fiber optic T1 line. Will you be able to provide an IP router that's compatible with my token ring ethernet LAN configuration?
Homer: [stares blankly for a few seconds] Can I have some money now?
--Metrollica
lets add as many services, users and router/switch points as the Internet and see how fast it is then. I am confident it will still be very impressive, and given those numbers we would all be amazed. Yay theory!
.. how fast Al Gore will take credit for inventing the Internet2 also.
Live web cams
the design of the ARPAnet was never intended for what it is used for now. That is a testament to the robust nature of the design they used, but is also an indicator that we should not so easily fall into the '640 outta be enough for anyone' mentality. The fact is that our population is growing dramatically and will continue to do so. Lets design more pluggable friendly networks so that in the case that it gets bogged down in the near future we will simply throw another protocol on top (very loose example I realize) and not have to totally rewrite everything that directly or indirectly by up to 7 magnitudes depends on the old protocol.
The transfer rate of the new records calculates as follows: 625MB over 12,272km in 13 seconds = 590000 MB*Km/s = 0.590 TB*Km/s
When I drive home from work in a few minutes: 125TB (10^15 Synapses, Von Neumann et al.) at 85 Mph during rush hour (yeah, that manic...it's me) = 4.7 Tb*Km/s
The Boing full of DVD's calculates as follows: 4.7GB * 170.5 Cubic meters cargo space / 175 Cubic cm jewel case * 912 Km/h = 662,515Gb * 0.25Km/s = 1160 TB*Km/s
The University of Washington has transmitted 1.5Gbps of HDTV across the country. I guess the new thing here is the intercontinental aspect. Here for the UW press release.
Can you say the latest linux ISO's?
I didn't think they allowed personal computers on the internet2. I thought it was devoted to research and education. Things like live video feeds and research data.
You may have the internet2 at your university, but I doubt you have it in your dorms or what-not.
Please, please tell me it was a CD by Sting.
http://www.xxxchurch.com/ labels itself as "The number 1 christian pornography site."
Yes, it's actually an antiporn site.
Interesting approach, nonetheless.
Withdrawal before climax is very ineffective and those who try this are usually called "parents."
transferring the equivalent of an entire compact disc's contents across more than 7608 miles (12,272 km) of network in 13 seconds
Fitting that the first ever use of the internet2 is piracy! I bet it was Eminemn's new cd...
python -c "x='python -c %sx=%s; print x%%(chr(34),repr(x),chr(34))%s'; print x%(chr(34),repr(x),chr(34))"
Scary Thought! Better get involved before you need a .Hollings Passport.
From these previous articles, the way that major broadband providers down under managing - Telstra, Optus, General are capping Internet usage to 3GB per month! This equates roughly to six ISOs. This means that you could max out your traffic allowance in say 6 x 13s = 78 seconds!!!
You could kiss broadband content eg. Streaming webcasts-music, demos, Telecommuting (ie Voip-video) goodbye!
How can a pipe like that exist in Fairbanks, AK when I can't even get frickin DSL in my house? Maybe it's a secret plan by Verizon to annoy customers...
If you were transferring a 1mb file , that according to your calculation would travel at 12272km/second (more than). Which isn't true.
Free warez in just seconds from anywarez to anywarez!
Information wants to be free!
It doesn't matter at all how much faster than the average dialup modem they transfer data so long as there is still a user with a dialup modem at the other end of the transfer. I am not looking to belittle the fabulous work these folks have put in. Merely pointing out that until we solve the "last mile problem" these efforts are largely wasted.
Actually look at the porn!
...yet another hardcore Amazon dead due to lag, this time because SHE couldn't keep up with THE SERVER.
The informaton that the LOC is 10 terabytes comes from the Data Powers of Ten page. Whether or not this is entirely accurate, I'd be willing to bet that a lot of reporters and such use it as a reference. They're probably good ballpark numbers. To quote a bit from the section of the page that includes the LOC:
pr0n jokes aside :-)
They really shouldn't be building up expectations in people's minds that "Internet2" is going to make things faster for them.
These types of stories eventually wind up in the Tech section of the local newspapers etc. and its A Bad Thing TM to build up mis-perceptions.
Internet2 is not going to solve last mile bandwidth limitations.
ThrustSSC.
Too bad the original ThrustSSc site seems to have died.
If you don't want to repeat the past, stop living in it.
I'm sick of this joke© It's based on a quote taken wildly out of context©
IIRC, the quote actually is *about* Internet2, and Al Gore was one of the key figures in passing the bill that sponsored the Internet2 program©
Gore was one of our more tech-savvy politicians, and we may have killed his presidency run with a dumb joke© ¥In a race that close, you can blame anything
In Capitalist America, bank robs you!
Not to mention charge a couple of grand :P
There was so much data passing, the mouse actually stopped responding for large periods of time.
:)
Maybe cause you used an el cheapo AMD processor
Telnet can be somewhat secured. If someone sniffs my password all they are going to get as my password is "s/key" and a string of useless words after that...
When something like this comes along and everybody gets to show their mad multiplication/division skills?
A deep unwavering belief is a sure sign you're missing something...
if DoubleClick/etc just stopped with all of the Flash ads, the rest of the existing internet might be that fast. :-)
Not bad, considering there are at least 40Gbit commercial links. ;-)
Another story is that it has to go through internet, not just link.
And routing 128Gbit of traffic is not easy.
Here's where Lambda router comes in play
People are posting about how 400Mbit/s is not that great considering that there are 10Gbit/s lines (or whatever) traversing the Atlantic. What you have to realize is:
1) Lines are never as fast as advertised.
2) Latency has a big effect on many congestion control algos. I assume that they were using some form of TCP for this transfer; if so, I'd like to know which variant (Reno/New Reno/Vegas/etc.) and whether they modified it.
Tastes like burning! - Ralph Wiggum
Pray tell which!
So what is the total baud rate of the USPS delivering AOL coasters?
Some facts about the Silver Spoon son of a Senator who spent most of his time in Washington growing up and learning fron daddy how to lie and twist the truth so he could get what he wanted. Al Gore also learned how to pad his pocket along with Bill and supported the President when he recieved a blowjob from Monica in the Oval Office doing the Nations Business. Bill Clinton wagging his finger into the camera "I never had sex with Monica uh yeah it was just a blow job thats not sex". Al Gore did not invent the internet go talk to Vincent Cerf. Al Gores lets count all the chads and manufacture some votes made the whole world look at America and say I am glad I am over here and not over there look at those stupid Americans. Believe Al Gore then you must believe that Bill Gates invented 1's and 0's.
The RTP-framing in the HDTV at 1.5Gbs transfer you describe indicates that UDP was the transport protocol used. What's new in the 401 Mbps result here is that TCP was used .
We've already established that FedEx wins on bandwidth, now what about cost per bit.
For me to get time on the FedEx petabit jumbo jet costs what, $10E-10/bit? Now presume that internet 2 will have a hundred nodes, and will cost ten billion (optimistic on both counts) so about a hundred million per node or about ten million per node per year. So one second costs about 3 cents, and I get 0.4 gig for it presuming there is the demand for full utilization.
So where is the scientific reason for spending a hundred times more per bit? If it's a big shipment, I can wait for the plane. If it's a small shipment, I can wait for good old internet 1. If it's interactive, I should fly myself to the computer that's doing the crunching or upload the code to my local platform. I have yet to see a legitimate scientific application for this. Maybe there's a futuristic entertainment angle to internet 2, but should NSF be funding ultra-luxury entertainment?
Internet 2 is a solution looking for a problem.
Or maybe sequelitis. "The first one was a hit, let's hurry up and get another one just like it out."
Bah. I don't pay taxes so people can win pointless expensive races. Show me how this helps anything that is remotely in the public interest.
mt
This was announceed on one of the Debian mailing lists with a subject of "Debian Woody in less than two minutes". Until I read the mail, I thought that meant that they were just about to release it as stable. Debian deciding to actually release is far bigger news than some Internet speed record.
what speeds would they get if they used ipv4 with public internet ips to transfer data over these wires? why do they attribute this to 'internet2', and not just a fat pipe?
--
Stay tuned for some shock and awe coming right up after this messages!
I heard today about a 17hour long rate of 850Mb/s from Washington state to Brussels. Not quite as far but twice as fast. It was using some mix of TCP and UDP to avoid TCP reduction due to lost packets.
So, let's see, an Australian could exceed their monthly cap in just over a minute :-)
:-)
Besides, they may get 401 megabits per second* down, but I bet they only get 128 kilobits per second up! Hee hee
*data rates not guaranteed. Actual download speeds may vary due to network conditions, your computer, and the local university down the street that hacked their Internet2 widget to give them a shitload more bandwidth for free and max out the local loop.
PS:Is it just me, or did slashdot ads get a LOT bigger all of the sudden?
Amster-Damn that's fast!
Ahem, I use a Quantum dialup connection with instantanious unlimited bandwidth communications to the Illuminati.
Check with Dr. Erich von Daniken for technical details.
Eve Fairbanks says I drive a hybrid!LOL
All I can say is so what. The government sends its spy pictures of Iraq over sattelite a whole lot faster than that. We're walking gigabytes/second.
yes(true), i was tasked to measure the speed of light using a piece of equipment that was 1000 times too slow, or needed 1000 samples to attain the accuracy needed. It was for a mapping system i designed, and due to 'the boss' wanting to use radio waves(speed of light), he wanted to clock the waves and get telemetry. ;)(741 mph @ sea level, for you precision freaks), although if they could packet 1,000,000 sound waves together, without losing integrity, it could be done.
After trying to explain for the tenth time, i just built the fscking thing anyway. And lo and behold, it didn't work, but because a minor detail of how a chip had a swept freq. response, i got reamed.
After the eleventh time, we went to sonar telemetry, waaaay easier to time.
Moral of the story-they sure as hell didn't use sonar
ya riiight!
Before I tried using Apache, I was only getting a third of that (13 Mb/sec). Anyhow, 50 Mbits/sec vs 420 Gbits/sec... you figure it out. Me, I'll just drool for the drive arrays that ran fast enough to keep up with the link.
#naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
some fast memory like volume holographic optical
storage nanotechnology being developed by good
ole Bell Labs/Lucent and others.
or concord Jet full of IBM IDE drives....? well, if i factored in reliability, my vote would go with the bicycle.
i wonder how fast is the thoroughput on my tin cup with string method.. of course thats not transmitting data, but i could build a modem for it.
I may be mistaken, but I thought I read about an OC-768 test by Qwest across the continental U.S. earlier on /. - so why is this different? OC-768 is about 40Gb/s, which is a lot faster than 401Mb/s.
Jake
Dating: while( 1 ){ call_girl(); get_rejected(); drink_40(); } return 0;
The first part of the formula:
calculates the data size. The time it takes from A to B is where DD is the distance between A and B, not the length of the stationwagon!. Hence the correct formula for the station wagon band width is and for the typical distance of the main story (and a Subaru is not amphibious, so let's take Wladiwostok & Lisbon instead of Alaska & Amsterdam for A & B) DD is 1684210 times longer than WL and the number for BW shrinks to 7.7 Gb/s which is still way higher than the number achieved with internet2 & SURFnet but not as impressive as Bonboard's 13 Petabyte/s.Of course the distance between A and B plays a dirty role in these calculations. If you send your data optically to Alpha Centauri then it does not matter much if your emitter throws them with 1Gb/s into the ether or with 56kb/s, the transfer time is basically determined by the travel speed (speed o' lite), while for terrestrial internet only the number of intermediate switches is relevant (unless we start talking about very small amounts of data, less than a few kilobyte, say).
With the Internet2 I could download those looped Scorpion King trailers disguised as AOTC 8000 times faster !
It wasn't but a few months ago (3/25/2002 as reported by this story) that Bell Labs/Lucent demonstrated 2.56 Tb/s over 4000km, compared to this story's 401 Mb/s over 12300km -- about six thousand times as much bandwidth. While 401 Mb/s is pretty fast, its really not that great as far as these things go.
Personal Teleportation? A whole new meaning to network traffic...
Leben Sie jetzt die Fragen.
Any idea what software they used for the transfer? A simple TCP session won't work - the maximum window size of 64KB limits the transfer rate over large speed*delay products. Were they using a multi-session FTP, or customware, or something UDP-based?
Bill Stewart
New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
Why is this news? It is easy to get a gigabit link between any two major cities in the US, if you are willing to pay. I transfer files at gigabit speeds all the time - granted, across a river and not across an ocean, but is it really any different?
I ran telnet over the internet to connect to remote systems for 10 years. Only in the last few months did the last account that was telnet-only switch to requiring ssh. How many times was I hacked? 0. Never.
Shouldn't that be LAN speed record?
Microsoft already did 957 megabits per second on Internet2 2 years ago...
r l= / ibrary/en-us/dnw2k/html/speedtrial.asp
http://msdn.microsoft.com/library/default.asp?u
the bit after the question mark is wrong. obviously the word is library and there are no spaces
"...the equivalent of an entire compact disc's contents"
What? Was the rest marked out with a Sharpie marker?
You'll fail your networks class with math like that..
You have missed some of the subtler points of the calculation. We are measuring the bandwidth of the wagon, not the transfer rate achieved by one trip with one wagon between two arbitrary points. For comparison, by your calculations the bandwidth of a piece of wire or hunk of fiber would vary depending upon its length. This is obviously false. (neglecting any signal degredation, of course)
Of course, sustaining a 13 petabyte per second transfer would require that you have a fleet of station wagons running bumper-to-bumper down the freeway...
Thats faster than Yo mama chasing after crack
--JonnyBlog
... Then they did the same test using attbi and it took 3 days thanks to the artificial rate caps...
Broadband should be BROAD.
Actually, I can imagine better uses for the money and talent being thrown at this project for no discernible reason.
mt
Okay, yes, it's faster than a regular modem, but surely backbones are pumping more data around than this already, even if it's spread out a bit.
Some ISPs have hundreds of thousands of users online at any one time, and if half of them are using broadband.. you're looking at Gbps of bandwidth.
Not only that, but fiber optics have the capacity to carry far more than this.
I thought Internet2 was meant to be 'super'.. this doesn't sound too far off what the best regular Internet stuff is doing already.
mogorific carpentry experiments
13 seconds?
But I want it now!
Those who sacrifice security to condemn liberty deserve to repeat history or something. - Benjamin Santayana
TCP windows get up to 64KB - that's the most you can have outstanding waiting for ACKs, because that's all the bits the header has room for. Typical windows are more like 2KB-8KB. The problem, for long-haul data connections, is that the size of the window times the transmission latency is the maximum rate you can transmit data. So if you have a satellite with a 0.5 second round-trip time (roughly) and a 64KB TCP window, your maximum speed is 128KB/sec, aka 1024 kbps, which doesn't fill a T1. If you've got a 10000-mile round-trip (Alaska to NL is probably farther than that) the speed-of-light limit on RTT is about 100ms, so you're limited to about 5Mbps/sec. These guys went a lot faster than that, so they were clearly doing something intelligent, like keeping multiple TCP windows open, or using UDP with applications that do their own ACKs.
Bill Stewart
New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
What I was trying to say ...
... even if you saved all of that money
... is that there will always be top end
compution engines that you cannot afford to
buy
by using a 56k modem instead of Internet 2.
And there will alway be researchers who need
orders of magnitude more compute cycles than
they can afford to buy out-right.