Cluster Scalability Of ANSYS Fluent 12.0 For A Large Aerodynamics Case On The Darwin Supercomputer


This work examines the parallel scalability characteristics of commercial CFD software ANSYS FLUENT 12 for up to 256 processing cores, for transient CFD simulations that are heavy in I/O relative to numerical operations. In studies conducted with engineering contributions from the University of Cambridge and ANSYS, the Linux HPC environment named Darwin combined an Intel Xeon cluster with a P... » read more

Power/Performance Bits: Aug. 9


Phase-change memory Researchers at Stanford are working on phase-change memory technology, which could deliver the best of volatile and non-volatile memory. Phase-change materials can exist in two different atomic structures, each of which has a different electronic state. A crystalline, or ordered, atomic structure, permits the flow of electrons, while an amorphous, or disordered, struct... » read more

System Bits: Aug. 2


Helping drones navigate urban environments While it has been widely discussed, Amazon wants to start using drones to deliver packages by 2017, but if you live in a high-rise apartment, you might be waiting a bit longer because because UAVs (Unmanned Aerial Vehicles) use GPS for localization and navigation but in urban areas, high-rise buildings may block the line of sight to GPS satellites, ca... » read more

System Bits: June 21


Faster running parallel programs, one-tenth the code MIT researchers reminded that computer chips have stopped getting faster and that for the past 10 years, performance improvements have come from the addition of cores. In theory, they said, a program on a 64-core machine would be 64 times as fast as it would be on a single-core machine but it rarely works out that way. Most computer programs... » read more

Manufacturing Bits: May 31


Superconducting magnets The National High Magnetic Field Laboratory (MagLab) has broken another world’s magnet record. This time, MagLab broke a record for a high-temperature superconducting (HTS) coil operating inside a high-field resistive magnet. With the technology, the agency achieved a magnetic field of 40.2 teslas. The previous record was 35.4 teslas. Tesla, or T, is the measuremen... » read more

System Bits: April 12


Highly aligned, wafer-scale films Rice University researchers, with support from Los Alamos National Laboratory, have created inch-wide, flexible, wafer-scale films of highly aligned and closely packed carbon nanotubes with the help of a simple filtration process. The chirality-enriched single-walled carbon nanotubes assemble themselves by the millions into long rows that are aligned better... » read more

Power/Performance Bits: March 29


Photonic-phononic circuit Researchers at the National Institute of Standards and Technology (NIST) developed a piezo-optomechanical circuit that converts signals among optical, acoustic and radio waves. At the heart of the piezoelectric optomechanical circuit is an optomechanical cavity, which consists of a suspended nanoscale beam. Within the beam are a series of holes that act like a ha... » read more

System Bits: March 22


How nanocrystal structures self assemble Researchers at MIT and the Cornell High Energy Synchrotron Source (CHESS) have discovered some of the secrets to a long-hidden magic trick behind the self-assembly of nanocrystal structures, the understanding of which could be used to create more vivid display screens and optical sensory devices. The transformation of simple colloidal particles — b... » read more

System Bits: Feb. 2


Wearable sensors reveal health data from sweat In the name of science, UC Berkeley researchers want you to break out into a sweat — so it can be analyzed, of course. Specifically, the researchers have created a flexible sensor system that can measure metabolites and electrolytes in sweat, calibrate the data based upon skin temperature and sync the results in real time to a smartphone. The... » read more

System Bits: Dec. 23


Building MEMS at one-hundredth the cost The microelectromechanical systems (MEMS) market was $12 billion business in 2014, dominated by a handful of devices, such as accelerometers that reorient the screens of most smartphones. However, researchers at MIT pointed out that potentially useful MEMS have languished in development because they don’t have markets large enough to justify the initia... » read more

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