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2013-06-17 14:15:17 (0 comments, 2 reshares, 0 +1s)

Bill Dally on High Performance Computing at ISC'13

Bill Dally, the former chairman of the Stanford Computer Science Department and present Chief Scientist at NVIDIA, 
makes this essential point ... and has plans to address it:

The end of Dennard scaling has made all computing power limited, so that performance is determined by energy efficiency. With improvements in process technology offering little increase in efficiency, innovations in architecture and circuits are required to maintain the expected performance scaling. The large scale parallelism and deep storage hierarchy of future machines poses programming challenges.

#supercomputer  
http://www.isc-events.com/isc13_ap/presentationdetails.php?t=contribution&o=1928&a=select&ra=speakerdetails
http://nvidianews.nvidia.com/Exec-Bios/Bill-Dally-20b.aspxmehr »

2013-06-17 14:20:50 (0 comments, 3 reshares, 5 +1s)

Tianhe-2 Makes #1 in the Top500 List of Supercomputers

As announced at ISC'13 today:
http://www.top500.org/list/2013/06/

https://plus.google.com/u/0/102688195041538899839/posts/Vq77CYANkiu

http://www.isc-events.com/isc13/
http://www.top500.org/lists/
Prof. Jack Dongarra's report:
http://www.netlib.org/utk/people/JackDongarra/PAPERS/tianhe-2-dongarra-report.pdf

Power-efficient computational processing using the hardware acceleration of co-processors (in this case, or GPUs in the case of Titan, the new #2).

#supercomputer  

image credit: Jack Dongarra

2013-06-15 16:43:35 (0 comments, 1 reshares, 6 +1s)

Fast Food and Herd Communication ... in Physical Review Letters

A team of physicists and ecologists explores animal vocalizations and foraging strategies ... with a focus on gazelles and Brownian searchers. Physics comes into play as they consider a Monte Carlo simulation of pair-wise interactions (vocalizations) and the impact on the efficiency of foraging strategies over increasingly larger scales. The connection between local interactions to intermediate and long-range phenomena is an important topic in physics today.

http://physics.aps.org/articles/v6/68
http://arxiv.org/abs/1301.5465
http://en.wikipedia.org/wiki/Brownian_motion

#physics  

2013-06-15 15:56:10 (0 comments, 0 reshares, 3 +1s)

Ring Move Delayed but Ready. Follow the g-2 Move!

What's the best way to get from Brookhaven National Lab to Fermilab? Via the Atlantic seaboard and the Gulf of Mexico if you're 50 feet wide!

http://muon-g-2.fnal.gov/bigmove/

2013-06-10 00:02:54 (0 comments, 1 reshares, 8 +1s)

Magnitude 8 Earthquake Supercomputer Simulation

Supercomputer simulation of peak ground velocities due to complex dynamics of a magnitude 8 earthquake. Simulations such as these from the Argonne Leadership Computing Facility can help building designers and emergency planners.

www.alcf.anl.gov

image: Geoffrey Ely, University of Southern California

2013-06-10 00:15:14 (0 comments, 0 reshares, 3 +1s)

Meet Mira, the ALCF Supercomputer

http://en.wikipedia.org/wiki/IBM_Mira
http://www.alcf.anl.gov

Mira at the ALCF and Titan at the OLCF are the DOE Office of Science Leadership Class Facility supercomputers.

#supercomputer  

2013-06-08 22:34:00 (1 comments, 2 reshares, 10 +1s)

Transporting Magnet Outside CERN SM18

SM18, the +CERN LHC Magnet Test Facility.
http://cds.cern.ch/record/1537377 (April 2013 video)

Photograph by Anna Pantelia, 6 June 2013
© CERN – http://cern.ch/copyright

2013-06-08 19:23:29 (3 comments, 0 reshares, 5 +1s)

BNL Workshop on High Performance Computing for Future Science Applications 2013

New trends in high performance computing are impacting how computational physics and big data management will be done at the +CERN  #LHC  and elsewhere. Representatives from +CERN IT, +ATLAS Experiment, +CMS Experiment, +ALICE Experiment, +Brookhaven National Laboratory, Argonne National Laboratory, Oak Ridge National Laboratory, SLAC, Google Cloud Compute, and elsewhere converged last week at BNL HPC 2013:
http://www.bnl.gov/hpc2013/
https://indico.bnl.gov/conferenceDisplay.py?confId=612

#supercomputing  

2013-06-08 18:32:37 (1 comments, 0 reshares, 6 +1s)

Poised for #1 on the Top500

Watch for an announcement on June 17 at ISC'13
http://www.isc-events.com/isc13/
as Tianhe-2 perhaps debuts at #1 on the Top500. The June 2013 list should be released on June 16 or 17 here:
http://www.top500.org/lists/

Here is Prof. Jack Dongarra's report:
http://www.netlib.org/utk/people/JackDongarra/PAPERS/tianhe-2-dongarra-report.pdf
showing the incredible, power-efficient computational processing power for those projects able to harness the hardware acceleration of co-processors (in this case, or GPUs in the case of Titan, the present #1).

image credit: Jack Dongarra

2013-06-08 18:04:49 (3 comments, 0 reshares, 3 +1s)

Incoming US Secretary of Energy Ernest Moniz

(on the left) earlier this week while at the Visualization Lab of the Consortium for Advanced Simulation of Light Water Reactors facility at ORNL.

http://www.casl.gov/

image: Oak Ridge Laboratory News

2013-06-02 14:36:47 (0 comments, 0 reshares, 5 +1s)

X-ray Diffraction of Crystals for White LEDs

Exploring crystals to acheive the right color balance for warm-white LEDs.

http://www.ornl.gov/info/features/get_feature.cfm?FeatureNumber=f20130523-00

image: Oak Ridge National Laboratory News

2013-06-02 02:03:25 (0 comments, 4 reshares, 7 +1s)

2013-06-01 14:46:01 (0 comments, 1 reshares, 5 +1s)

Working at the ORNL Spallation Neutron Source

Welder working at the ORNL SNS.

http://neutrons.ornl.gov/facilities/SNS/
http://en.wikipedia.org/wiki/Spallation_Neutron_Source

image: Oak Ridge Lab News

2013-06-01 14:39:03 (1 comments, 0 reshares, 2 +1s)

Remote Handling at the ORNL SNS

Working at the ORNL SNS target remote handling area.

http://neutrons.ornl.gov/facilities/SNS/works.shtml
http://neutrons.ornl.gov/facilities/SNS/works.shtml#target

image: Oak Ridge Lab News

2013-06-01 14:32:21 (0 comments, 1 reshares, 8 +1s)

Neutron Spin Echo Spectroscopy

Inside the ORNL SNS Neutron Spin Echo Spectrometer.

http://en.wikipedia.org/wiki/Neutron_spin_echo
http://neutrons.ornl.gov/nse/
http://neutrons.ornl.gov/facilities/SNS/

image: Oak Ridge Lab News

2013-05-31 01:36:31 (0 comments, 0 reshares, 1 +1s)

If you're a scientist struggling with large data in an HPC setting, come to this workshop: Processing and Analysis of Very Large Data Sets #bigdata #bigdatamgmt #science #hpc

2013-05-31 01:30:24 (0 comments, 2 reshares, 6 +1s)

Accepted for Publication: Exotic Phases of QCD Matter on the Fastest Supercomputer

Just released tonight and recently accepted for publication in Physical Review Letters, version 2 of this draft used OLCF Titan, the #1 supercomputer today. This is the first publication in heavy ion physics, other than "lattice QCD" simulations, to use a leadership class supercomputer for the computations.

http://arxiv.org/abs/1302.1119
http://prl.aps.org/accepted/a207dY4cOc519c3a76202040cced0d31f9e8530c7

Background info:
http://www.bnl.gov/rhic/news/040808/story2.asp
http://www.olcf.ornl.gov/titan/

image: Rob Pisarski, Brookhaven National Laboratory

2013-05-23 03:51:06 (1 comments, 0 reshares, 3 +1s)

Tips and Tricks for Google+ Hangouts on Air - The Book

Today I decided to write a book. Phew. 

Based on my Tips and Tricks for Hangouts on Air and Marketing Guide for Hangouts on Air, I wrote up a big ebook on how to run and market your Hangouts on Air. It's completely revised, expanded and improved based on what I've learned after running literally hundreds of Hangouts on Air.

This is a rough draft of the book, but I've made it open to the public, and anyone can make comments. Please let me know if there are any ideas you'd like me to include. At some point I'll actually get it designed, with picture examples and then release it as a free PDF.

2013-05-23 03:36:28 (0 comments, 1 reshares, 3 +1s)

Super Science Circle - May 2013 Edition

Need more science in your Google+? Well, here's all the science you can handle! Enjoy my latest, heavily curated edition of the Super Science Circle.

Please share this circle... for Science!

For the uninitiated, I maintain a circle of 450+ people who are active on Google+ and regularly post on Google+. In this circle you'll find scientists, journalists, astronauts, educators, and science enthusiasts. By importing this circle into your own circles, you'll immediately gain a vibrant and fascinating feed of amazing science stories.

I recognize that it might be too much science, so I suggest you create a brand new temporary circle and evaluate the people in the circle. Only transfer the keepers to your permanent circles. Then, when I update the circle next month, rinse and repeat.

Are... mehr »

2013-05-21 22:23:08 (3 comments, 3 reshares, 6 +1s)

Yes, We Give  SNS Tours!

http://neutrons.ornl.gov/facilities/SNS/

http://www.ornl.gov/ornlhome/visiting.shtml

http://en.wikipedia.org/wiki/Spallation_Neutron_Source

image: ORNL News

2013-05-21 22:13:37 (0 comments, 0 reshares, 8 +1s)

Artist's Impression of a Scanning Tunneling Microscope Tip at Work

An impression evoking STM discovery...

http://science.energy.gov/bes/suf/user-facilities/nanoscale-science-research-centers/

http://en.wikipedia.org/wiki/Scanning_tunneling_microscope
http://onlinelibrary.wiley.com/doi/10.1002/adfm.201370097/abstract

image: Stephen Jesse, ORNL

2013-05-18 18:40:58 (0 comments, 2 reshares, 6 +1s)

First measurement of D meson anisotropic flow at the LHC

http://arxiv.org/pdf/1305.2707.pdf

Quarks and gluons flow outward relativistically in the exploding fireball produced in Pb+Pb collisions at the #LHC . Measuring the anisotropic pattern of emission of D mesons (and other particles) tells us about the hydrodynamics of the produced Quark Gluon Plasma (QGP). The QGP behaves as a strongly interacting fluid, flowing at almost the speed of light as a nearly ideal liquid (extremely low viscosity divided by entropy). Using D mesons, we can see that c quarks produced in the collision (not present beforehand) interact enough with the produced medium to be swept along with the flow.

#ALICEexperiment   #LHC
  
image: Raimond Snellings

2013-05-18 17:27:32 (0 comments, 1 reshares, 10 +1s)

Spring is here: Northern Watersnake

... near the pond at Oak Ridge National Lab earlier this month.

image: Oak Ridge National Lab news

2013-05-18 17:22:55 (0 comments, 0 reshares, 13 +1s)

Canada Goose and Goslings

... at the ORNL Conference Center pond this month!

http://www.tnwatchablewildlife.org/watchareadetails.cfm?uid=09072811263154276&region=Oak_Ridge_WMA&statearea=East_Tennessee

http://www.esd.ornl.gov/facilities/nerp/

http://www.esd.ornl.gov/facilities/nerp/orr_birds.pdf

image: Oak Ridge National Lab News

2013-05-04 11:29:59 (6 comments, 0 reshares, 8 +1s)

My Adventure Teaching with Glass

As a Glass Explorer, my goal is to transform the way I teach science, making every moment a teachable moment. With the help of +CERN and +Project Glass, I've begun pursuing my goal in the most spectacular way - teaching a class of physics students from halfway around the world while touring the Large Hadron Collider. I'm so excited to share this incredible adventure with you.

2013-04-26 22:05:58 (0 comments, 1 reshares, 2 +1s)

The image is the screenshot of a GeoGebra applet created by me. In the animation you can see the circumcenter of a triangle in motion.

Take a look here to watch the applet:
http://www.lanostra-matematica.org/2013/04/triangoli-circocentro-in-movimento.html

2013-04-26 21:45:17 (0 comments, 1 reshares, 6 +1s)

Just one week to go until TEDxCERN!

Watch the next Hangout with CERN: Multipling Dimensions TEDxCERN preview on Thursday 2 May at 17h00 CET: http://plus.google.com/events/cuninh08il3iqrip6bcm3ahuhq0

Read more about the event: http://www.quantumdiaries.org/2013/04/23/cern-to-host-its-first-tedx/ and http://plus.google.com/events/ce3una7jpnd4rmv50jto0665vq8

Find out more about the speakers pictured here via http://tedxcern.web.cern.ch/speakers

Image courtesy of +TEDxCERN

2013-04-26 21:29:19 (0 comments, 0 reshares, 3 +1s)

Super Science Circle - April 2013 Edition

It's time for another sharing of my Super Science Circle. This is a collection of 400+ active people on Google+ who often post about science. If anyone tells you G+ is a ghost town (not that anyone does any more), get them to import this circle. 

PLEASE SHARE THIS CIRCLE... FOR SCIENCE!

I have personally reviewed each and every person on this list, to make sure that they:

1. Are active and engaged on Google+
2. Regularly post science-related stories on Google+

In this list you'll find scientists, journalists, researchers, professors, astronauts and general science enthusiasts. 

Not everyone in this list is going to be to your personal liking. So what you'll want to do is import the list into a temporary circle. Then move people over one by one into more permanentl... mehr »

2013-04-22 04:34:31 (5 comments, 0 reshares, 3 +1s)

As PC Sales Fall, Supercomputers Soar

Supercomputers grew 65 percent in 2009 alone, last year sales grew another 29 percent. You’re not seeing those growths in any other sector right now.

#supercomputing  

2013-04-21 22:56:31 (0 comments, 2 reshares, 4 +1s)

Glass 1 Gravity 0 #throughglass

2013-04-21 18:34:51 (0 comments, 0 reshares, 3 +1s)

PHENIX Experiment in InterActions Physics Photowalk 2013

The +Brookhaven National Laboratory PHENIX Experiment through the eyes of InterAction Physics Photowalk 2013:

http://www.interactions.org/cms/?pid=6000

http://www.flickr.com/photos/interactions_photos/sets/72157632715630871/with/8455520583/

http://www.symmetrymagazine.org/article/april-2013/winning-photowalk-images-show-modern-beauty-of-science

image credit: © Pauline Chiarelli, based on a photograph of the PHENIX Experiment

2013-04-21 18:07:36 (1 comments, 6 reshares, 19 +1s)

#ScienceSunday  

2013-04-20 11:16:18 (0 comments, 1 reshares, 8 +1s)

Polarization Domains in a Nanocapacitor

Colorized image indicates rate of growth of nanoscale polarized domains in a ferroelectric nano-capacitor. Nano-capacitors are important for multiple nano-technology applications.

image credit: Center for Nanophase Materials Sciences

2013-04-20 11:08:12 (0 comments, 1 reshares, 9 +1s)

Nanoscale Pillar Array

Array of silicon pillars (green) with silica nanospheres (gold colored) developed as porous media for separating mixtures.

http://www.cnms.ornl.gov/index.shtm

image credit: Center for Nanophase Materials Sciences

2013-04-19 16:03:32 (2 comments, 1 reshares, 11 +1s)

Bison Splashing at Fermilab Yesterday

Bison at Fermilab definitely enjoyed this new pool of water after yesterday's rain.


https://plus.google.com/u/0/102688195041538899839/posts/14CVYr4Hvcp
http://www.fnal.gov/pub/about/campus/ecology/wildlife/bison.html
http://www.fnal.gov/pub/today/


image credit: J. Orduna, Rice University, Fermilab Today

2013-04-13 13:10:23 (6 comments, 5 reshares, 10 +1s)

Infrared Furnace

Infrared light melts the material in the central rod at temperatures up to 4000 degrees. Allowing the sample to slowly cool for a month results in some of the largest single-crystal high-temperature superconductors.

image credit: Brookhaven National Laboratory

2013-04-13 12:29:11 (1 comments, 0 reshares, 6 +1s)

Transporting Fullerenes

A fullerene can be guided along a nanotube by an electric field if a water molecule is placed inside it, even though the fullerene and water molecule are neutral. Future applications might include medicine transport.

http://en.wikipedia.org/wiki/Endohedral_fullerene
http://physics.aps.org/articles/v6/43
http://prl.aps.org/abstract/PRL/v110/i15/e156103

image credit: Physical Review Letters

2013-04-12 16:40:00 (0 comments, 1 reshares, 5 +1s)

Self-Organization in Zero Gravity

Simulating zero gravity via levitation (in the lab and on computer) shows self-organization due to hydrodynamic interactions including both mutual attraction and spontaneous orbiting.

http://prl.aps.org/covers/110/15
http://prl.aps.org/abstract/PRL/v110/i15/e154501
http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.110.154501?referer=apspubspage

image credit: Physical Review Letters

2013-04-10 03:52:50 (0 comments, 1 reshares, 5 +1s)

On this week's PRL cover:
Laplacian of the projected instantaneous electron density of a wave packet

Read abstract in PRL: http://go.aps.org/13Bisnh

[Gopal Dixit, Jan Malte Slowik, and Robin Santra, Phys. Rev. Lett. 110, 137403 (2013)]

2013-04-10 03:33:00 (0 comments, 0 reshares, 6 +1s)

How many ways are there to cover a room using tatami mats?

A tatami is a type of rectangular mat, used as a traditional floor covering in Japan.  There are two types of mat: full mats, whose side lengths are in the ratio 2:1, and half mats, which are square and have area equal to half the area of a full mat.  These mats are typically used to cover rooms whose side lengths are integer multiples of the side length of a half mat. What complicates matters is that historically, it was considered bad luck to have an arrangement of mats in which four mat corners meet at a point.  This means that one would like to cover a room in an "auspicious" way, so that corner of each mat is either at the corner of the room, or touches other mats in a T-shaped junction.

A moment's thought shows that it is impossible to cover a large room in an auspicious way if one uses tooma... mehr »

2013-04-06 13:41:02 (1 comments, 0 reshares, 4 +1s)

Low Gravity!

Science students jump high while taking a break outside the National Synchrotron Light Source.

http://www.bnl.gov/ps/nsls/About-NSLS.asp

image credit: Brookhaven National Laboratory

2013-04-06 13:32:56 (0 comments, 0 reshares, 3 +1s)

Nanospecimen

Brookhaven technical associate Kim Kisslinger prepares organic solar cell material for imaging via transmission electron microscope.

http://www.bnl.gov/cfn/

image credit: Center for Functional Nanomaterials, Brookhaven National Lab

2013-04-06 13:16:14 (0 comments, 0 reshares, 4 +1s)

Jet Quenching: Quark Energy Loss in Ultrahot QCD Matter

Understanding jet quenching (energy loss mechanisms in a quark gluon plasma) is one of the highest priorities in the field of heavy ion nuclear physics.

http://en.wikipedia.org/wiki/Jet_quenching
http://alicematters.web.cern.ch/?q=ALICEjetquenching #ALICEexperiment  

image credit: Lawrence Berkeley National Lab

2013-04-06 13:01:02 (0 comments, 1 reshares, 5 +1s)

Note to self: Must share more, must share more, must ...

We find that, contrary to what is often suggested, scientists active in wider dissemination are also more active academically. However, their dissemination activities have almost no impact (positive or negative) on their careers.

via Carlos Salgado (CERN) and
https://twitter.com/astroparticle

2013-03-30 14:20:36 (0 comments, 0 reshares, 8 +1s)

Kaleidoscopic Pattern

Finger tracing on my Nexus 10 with the assistance of http://bit.ly/kaleidoo unintentionally resulted in a concept drawing of the +ALICE Experiment.

#ALICEexperiment  

2013-03-29 13:40:49 (2 comments, 0 reshares, 2 +1s)

Smoke Particles & Shadows

As a demonstration of a fast, real-time physics calculation, here is one of my first exercises using the NVIDIA CUDA Toolkit, with the SmokeParticles sample code compiled and rendered on my laptop. The photo-realistic simulation relies on the 384 processor cores of my laptop's GeFORCE GT 650M GPU to perform the calculations in parallel. Notice the deep shadows resulting from the self-shadowing of tens of thousands of smoke particles tracked for specified point of view and light source (full-screen, 720p).

http://www.geforce.com/hardware/notebook-gpus/geforce-gt-650m
https://developer.nvidia.com/cuda-toolkit

Here is the whitepaper:
http://docs.nvidia.com/cuda/samples/5_Simulations/smokeParticles/doc/smokeParticles.pdf

#GPU   #physics  

2013-03-28 15:05:56 (1 comments, 2 reshares, 4 +1s)

"The Most Complex Semiconductor Device Ever Made"

#GTC2013  kicks off with a description of TITAN released this month, the GPU named after a supercomputer that uses GPUs. (GEFORCE GTX TITAN description starts at 06:00 in video and ocean physics simulation starts at 07:30 and 09:25.)

http://www.olcf.ornl.gov/titan/
http://www.nvidia.com/titan-graphics-card
Nvidia GeForce® GTX TITAN INTRO {Fullᴴᴰ} (1080p)
GeForce GTX TITAN Announcement (announcement)
 

2013-03-20 01:15:38 (0 comments, 1 reshares, 4 +1s)

The Return of the Super Science Circle

Okay, I'll admit, I made a mistake in retiring the Super Science Circle. I wasn't wrong; Communities are still the future and the best way to make friends here on Google+. But I realized that the Super Science Circle is simple and efficient way to get new people to see that Google+ isn't a ghost town.

PLEASE SHARE THIS POST... FOR SCIENCE!

When I was attending +ScienceOnline 2013, I must have helped dozens of people join Google+, and the first thing I had them do was import this circle. It's an invaluable tool for getting new people up to speed.

So, I just did a complete refresh on the circle. I examined every single member and judged them according to my two-part criteria:

1. Active in the last 30 days or so.
2. Regularly post on scientific topics.

If you know anyone... mehr »

2013-03-14 11:38:27 (0 comments, 0 reshares, 7 +1s)

New results indicate that particle discovered at CERN is a Higgs boson http://home.web.cern.ch/about/updates/2013/03/new-results-indicate-new-particle-higgs-boson

Image © CERN, for the benefit of the ATLAS collaboration - for terms of use see http://cern.ch/copyright

2013-03-14 05:10:09 (1 comments, 0 reshares, 4 +1s)

Since last week's hangout, is there more to say about the new boson discovered last summer? What is the breaking news from the ongoing Moriond conference in Italy? This Hangout with CERN gives the latest results from the experiments, including results from a little experiment of our own.

Find out more by joining +CERN experts in this "Hangout with CERN" broadcast live on Thursday 14 March at 17:00 CET, on CERN's Google+ and YouTube pages, with a recording later available on YouTube.

You can post questions in advance in the comments below or on Twitter to @CERN with the hashtag #askCERN . We'll pick the best ones to answer and we may even invite you to participate in the live hangout!

Want to watch our previous hangouts? They're all available via: http://www.youtube.com/playlist?list=PLAk-9e5KQYEroNUYrWHAANKJL3LDz9-L_

This is the last... mehr »