Primeur magazine

Edition: flash - Issue: 2015-08-05

Applications

Scot Breitenfeld from The HDF Group describes on the group blog parallel file extensions to CGNS. The CFD General Notation System (CGNS) provides a general, portable, and extensible standard for the storage and retrieval of computational fluid dynamics (CFD) analysis data. It consists of a collection of conventions, and free and open software implementing those conventions. It is self-descriptive, machine-independent, well-documented, and administered by an international steering committee. It is also an American Institute of Aeronautics and Astronautics (AIAA) Recommended Practice. CGNS data was originally stored using a file format called ADF ('Advanced Data Format'), but ADF does not have parallel I/O or data compression capabilities, and does not have the support base and tools that HDF5 offers. ADF has since been superseded by the Hierarchical Data Format, Version 5 (HDF5) as the official default underlying storage mechanism for CGNS. In 2014, NASA provided funding for The HDF Group to improve the under-performing parallel capabilities of the CGNS library. Read further...

Exascale

Conor Gaffey published an article in News Week Europe about the supercomputer restrictions that China, according to the Wall Street Journal and other sources is imposing. (However, we did not see or find the original Chinese source sited by WSJ and others, PM). Gaffey cites Mark Parsons from EPCC: "The arms race in high-performance computing has always been about who has the computer which can do the most FLOPS," says Parsons, referring to floating-point operations per second (FLOPS), the measure used for monitoring supercomputer performance. He says that such machines are seen as "totem poles," or status symbols. Tim Stevens, a cyberwarfare expert in the War Studies Department at King's College London, told to Gaffey. Whoever possesses such a beast of a machine has a considerable national security advantage. Stevens says that the primary security implication of supercomputers is nuclear - whoever is in possession of such machines is capable of accurately modelling the capabilities of their nuclear weapons. Read further...

Focus on Europe

The Mont-Blanc project published a video that summarizes the experience of the Mont-Blanc climbers team during the Student Cluster Competition at ISC2015. It has been not only a technological but also an educational challenge for all of them, Mont-Blanc says. Read further...