First Full Observable-Universe Simulation
First time accepted submitter slashmatteo writes "The goal of the DEUS project (Dark Energy Universe Simulation) is to investigate the imprints of dark energy on cosmic structure formation through high-performance numerical simulations. In order to do so, the project has conducted a simulation of the structuring of the entire observable universe, from the Big Bang to the present day. Thanks to the Curie super-computer, the simulation has made it possible to follow the evolution of 550 billion particles. Two other complementary runs are scheduled by the end of May. More details in the press release."
When in the simulation does it reach the point where it starts simulating the Curie supercomputer simulating it?
All we need is a pointer to Earth that says 'You are here.' and it's game over for us all!
Out of modpoints but really liked a post? 1BDkF6TtmmeZ3yqXbz9yhdYVqRYnwFoXDj
I didn't RTFA, but DEUS sounds like the perfect name for this project.
if there was a way to reduce entropy in the Universe yet?
"To those who are overly cautious, everything is impossible. "
Gradually the multiverse calculations our universe spawns will become more complex and longer lived until the secret of a self sustaining calculation that uses the very fabric of space time as its compuational engine is found and grows rapidly with inflation to consume our universe and give birth to new ones. /tin foil
From Wikipedia's page "Galaxy":
"There are probably more than 170 billion (1.7 × 1011) galaxies in the observable universe."
550 billion particles to simulate the observable universe means just over three particles per galaxy. I don't know exactly what they're doing but it doesn't sound like much of a simulation..?
I was lead to believe there would be faerie cake.
You should turn signatures off.
550 billion particles? That's it? How exactly does that equate to a "full observable-universe simulation"? Last I checked, the minimum estimate for our galaxy alone was 100 billion stars. Multiply that by at least 100 billion other *galaxies* and we're looking at... uh... a much larger number to even begin to simulate the entire observable universe.
I'm sure I'm significantly misunderstanding something about the simulation parameters though.
http://www.youtube.com/watch?v=l2sJzec2wmw Just saying
Does the simulated universe contain intelligent lifeforms who have built universe-simulating supercomputers?
Sorry guys, this isn't the first 'full observable universe simulator'.
I made one back in the 1980s. It only used one particle, but that's a difference in /resolution/, not scope.
And when it returns a response of "42," Douglas Adams will die laughing...
no, wait...
(obligatory Space Balls reference)
You're looking at now, sir. Everything that happens now is happening now.
What happened to then?
We passed then.
When?
Just now. We're at now now.
Go back to then.
When?
Now!
Now?
Now!
I can't.
Why?
We missed it.
When?
Just now.
When will then be now?
Soon.
If you could reason with religious people, there would be no religious people
But if you observe it won't it alter the simulation?
Interesting to note that they didn't bother with too many gpu nodes. Reflects what we see with our users despite the abundance of marketing material from Nvidia.
5040 'standard' compute nodes: dual E5-2680 processors; 64GB RAM
360 'bulk' compute nodes: quad EX-X7560; 128GB RAM
144 GPU nodes: dual M2050
Another 90 'super' nodes on order: 128core, 512GB RAM
Cores: 103,680
GPUs: 288
Almost token GPU offering. These guys must do real work on it.
.
You're assuming they're using particles to represent atoms / quarks / whatever, in which case they'd be way short of simulating a speck of dust.
They're using a particle to represent a galaxy, which is a slightly lower resolution but still a valid simulation.
Ydco co
A paperclip is about a gram and has lots of particles in it. If you want to find the number of supercomputers it would take to simulate a paperclip you take the number of particles and divide it by the number of particles the super computer can simulate you get a large number. 1g/26 * Avogadro's number / 550 billion = 1.09493482 × 10^12, which means that if you wanted to simulate a paperclip you would need around 10^12 supercomputers. Last time I checked the universe was much more complex than a paperclip...
...and now I'm on the lookout for a girl with purple hair named Miang.
Life, ultimately, boils down to the Four Fs: Fighting, Fleeing, Feeding, and Mating.
then they probably know where I'll be tommorow (just don't tell my girlfriend)
Is any genuine science being done here? Running simulations to model, say, the weather or ocean currents makes sense. You can calibrate them to past data and use them predictively. How does a simulation of the "universe" tell you anything?
How are they going to verify it experimentally?
I do not believe in karma. "Funny"=-6. Do good and forbid evil. Yours, Oft-Offtopic Flamebaiting Troll.
There are 3.34E22 molecules of H20 in one gram of water. That is a hundred billion or so times more particles that are in this simulation. Astro calcs have just been including more and more particles since the first one with 2 interacting particles. The number of (stars/solar systems/galaxies/clusters/super clusters etc) that each of those particles is supposed to represent has just been getting smaller as we have faster and faster computers.
So intergalactic space is modeled as what, completely empty? And dark matter and dark energy are modeled as what?
But maybe more interesting than that is how do you model the boundary conditions? What's beyond the end of simulated space and how do you model that? How do you model the fact that the universe has no fixed frame of reference?
the laws of emergent properties say we can model the macro universe to a pretty fine degree. we dont need to track the position and velocity of every atom, or their constituent subatomic particles, and every photon, to accurately portray the universe at the scale of stars up. HOWEVER, the law of sensitive dependence on initial conditions allows for small, subtle effects at the subatomic level to have huge effects on the macro level. so, the answer to whether we can model the universe to create the ultimate answer to life, the universe and everything is: Splunge.
I have now crossed the streams of adams and python, thus destroying the universe.
Can i have this program on my Iphone now?
capable of storing the equivalent of 7 600 years of MP3 files (15 PBytes)
So apparently they encode the harmony of the spheres to 550 kbit/s MP3. At such a high bitrate they could as well use a lossless codec. And if they are such audiophiles why are they using MP3 at all?