supercomputer tagged posts

Largest Virtual Universe Free for Anyone to Explore

The distribution of dark matter in a snapshot from Uchuu. The images show the dark matter halo of the largest galaxy cluster formed in the simulation at different magnifications. (Credit: Tomoaki Ishiyama) 

An international team of researchers has generated an entire virtual UNIVERSE, and made it freely available on the cloud to everyone.

Uchuu (meaning “Outer Space” in Japanese) is the largest and most realistic simulation of the Universe to date. The Uchuu simulation consists of 2.1 trillion particles in a computational cube an unprecedented 9.63 billion light-years to a side. For comparison, that’s about three-quarters the distance between Earth and the most distant observed galaxies...

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New Molecular Device has unprecedented Reconfigurability reminiscent of Brain-Plasticity

Decision trees within a molecular memristor | Nature
Fig. 1: Circuit element structure and I(V) characteristics

Device can be reconfigured multiple times simply by changing applied voltage. In a discovery published in the journal Nature, an international team of researchers has described a novel molecular device with exceptional computing prowess.

Reminiscent of the plasticity of connections in the human brain, the device can be reconfigured on the fly for different computational tasks by simply changing applied voltages. Furthermore, like nerve cells can store memories, the same device can also retain information for future retrieval and processing.

“The brain has the remarkable ability to change its wiring around by making and breaking connections between nerve cells...

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Supercomputer Turns Back Cosmic Clock

Schematic diagram of the evolution of the Universe from the inflation (left) to the present (right). The “reconstruction method” winds back the evolution from right to left on this illustration to reproduce the primordial density fluctuations from the current galaxy distribution. (Credit: The Institute of Statistical Mathematics)

Astronomers have tested a method for reconstructing the state of the early Universe by applying it to 4000 simulated universes using the ATERUI II supercomputer at the National Astronomical Observatory of Japan (NAOJ). They found that together with new observations the method can set better constraints on inflation, one of the most enigmatic events in the history of the Universe...

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Black Hole Breakthrough: New Insight into Mysterious Jets

A comparison of a low resolution simulation (left) to the high-resolution simulation produced using Blue Waters (right) shows the effect of resolution on tilted accretion models. The high resolution model shows that precession and alignment slow down as a result of disk expansion due to magnetic turbulence.

A comparison of a low resolution simulation (left) to the high-resolution simulation produced using Blue Waters (right) shows the effect of resolution on tilted accretion models. The high resolution model shows that precession and alignment slow down as a result of disk expansion due to magnetic turbulence.

Supercomputer power enables advanced simulations of relativistic jets’ behavior. Researchers, including a Northwestern University professor, have gained new insight into one of the most mysterious phenomena in modern astronomy: the behavior of relativistic jets that shoot from black holes, extending outward across millions of light years...

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