Sequoia Supercomputer Sets Record With 'Time Warp'
Nerval's Lobster writes "The 'Sequoia' Blue Gene/Q supercomputer at the Lawrence Livermore National Laboratory (LLNL) has topped a new HPC record, helped along by a new 'Time Warp' protocol and benchmark that detects parallelism and automatically improves performance as the system scales out to more cores. Scientists at the Rensselaer Polytechnic Institute and LLNL said Sequoia topped 504 billion events per second, breaking the previous record of 12.2 billion events per second set in 2009. The scientists believe that such performance enables them to reach so-called "planetary"-scale calculations, enough to factor in all 7 billion people in the world, or the billions of hosts found on the Internet. 'We are reaching an interesting transition point where our simulation capability is limited more by our ability to develop, maintain, and validate models of complex systems than by our ability to execute them in a timely manner,' Chris Carothers, director of the Computational Center for Nanotechnology ...
RPI Supercomputer Smashes Simulation Speed Record
Lank writes "A team of computer scientists from Lawrence Livermore National Laboratory and Rensselaer Polytechnic Institute have managed to coordinate nearly 2 million cores to achieve a blistering 504 billion events per second, over 40 times faster than the previous record. This result was achieved on Sequoia, a 120-rack IBM Blue Gene/Q normally used to run classified nuclear simulations. Note: I am a co-author of the coming paper to appear in PADS 2013."
Siri's Creator Challenges Texting-While-Driving Study
waderoush writes "A rash of media reports last week, reporting on a study released by the Texas A&M Transportation Institute, implied that using voice-to-text apps like Siri or Vlingo while driving is no safer than manual texting. But Adam Cheyer, the co-inventor of Siri, says journalists took the wrong message from the study, which didn't test Siri or Vlingo in the recommended hands-free, eyes-free mode. In the study, researchers asked subjects to drive a closed course while they held an iPhone or Android phone in one hand, spoke messages into Siri or Vlingo, proofread the messages visually, and pressed buttons to send the messages. Under these conditions, driver response times were delayed by nearly a factor of two, the researchers found. 'Of course your driving performance is going to be degraded if you're reading screens and pushing buttons,' says Cheyer, who joined Apple in 2010 as part of the Siri acquisition and left the company two years later. To study whether voice-to-text apps ...
Scientist at Work Blog: Leaping High Now to Dive Deeper Tomorrow
It may seem a strange contradiction, but we’re seeing evidence that leaping out of the water leads to humpback whales’ increased ability to remain submerged.
Kepler-62 Has 2 Good Candidate Planets In the Search for Life
astroengine writes "About 1,200 light-years from Earth, five planets are circling around sun-like star Kepler-62, two of which are fortuitously positioned for water, if any exists, to remain liquid on their surfaces — a condition believed to be necessary for life. The discovery, made by scientists using NASA's planet-hunting Kepler space telescope, is the strongest evidence yet for more than one Earth-sized planet existing in a star's so-called 'habitable' zone. 'We're particularly delighted to find that there are two planets in the habitable zone,' lead Kepler scientist William Borucki, with NASA's Ames Research Center in California, told Discovery News. 'It sort of doubles our chances of finding that Earth we'd all like to find. When you think about Earth and Mars, if Mars had been a bit larger, if Jupiter hadn't been so close, we'd again have two planets in the habitable zone and maybe we'd have a place to go,' he said." There's also a third planet believed to be a good candidate for ...