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A Path To Energy Efficient HPC Datacenters

Oct 29, 2013 |

Energy efficiency is rapidly becoming a key factor for many modern high-performance computing (HPC) datacenters. It poses various challenges, which need to be addressed holistically and in an integrated manner, covering the HPC system environment (system hardware and system software), the hosting facility and infrastructure (cooling technologies, energy re-use, power supply chain, etc.), and applications Read more…

Controlling Soft Errors at Scale

Oct 2, 2013 |

There are many important issues when it comes to advancing the field of HPC toward the exascale era, but among all these variables, there are about five or so sticking points that really stand-out: one of these is controlling for soft errors. As the number of cores per machine increases, incorrect behaviors, known as soft Read more…

A Shot of Java to Send Accelerators Mainstream

Sep 5, 2013 |

When it comes to mainstream adoption of the use of GPUs and other accelerators, one of the primary barriers lies in programmability. While the vendor communities around accelerators have pushed to flatten the learning curve, the fact remains that it takes special effort on the part of ordinary developers to undertake the educational process. In this in-depth audio feature, we talk to Rice University researcher, Max Grossman about how Java…

Intel Firms Up Fortran, Steps to Standards

Sep 4, 2013 |

Following Intel’s low-key announcement today of updates to Cluster Studio and Parallel Studio, we spoke with its software and tools guru, James Reinders, about what these enhancements mean for Xeon Phi, Fortran development, and the advancement along standards lines, including OpenMP 4.0 and….

NVIDIA Takes PGI Under Wing

Jul 29, 2013 |

Moments ago, NVIDIA announced its acquisition of the Portland Group (PGI) which has provided compiler and tools for the HPC-oriented C and Fortran markets. According to the company’s Sumit Gupta, this will allow them to further build their software portfolio and to push the adoption of GPUs through OpenACC in particular. NVIDIA and PGI will…

Short Takes

Opening Up the Accelerator Advantage

Nov 26, 2013 |

Researchers at Georgia Institute of Technology and University of Southern California will receive nearly $2 million in federal funding for the creation of tools that will help developers exploit hardware accelerators in a cost-effective and power-efficient manner. The purpose of this three-year NSF grant is to bring formerly niche supercomputing capabilities into the hands of Read more…

Programming for Unreliable Hardware

Nov 11, 2013 |

As transistors approach sub-atomic sizes, reliability is increasingly jeopardized. Chipmakers keep figuring out technical workarounds to the miniaturization problem; however, prevailing wisdom maintains that current manufacturing techniques will sooner or later run out of steam, and Moore’s Law – the prediction that has yielded huge increases in semiconductor performance for nearly five decades – will Read more…

Optimizing Performance in Parallel Programming

Nov 5, 2013 |

Parallel computing refers to the simultaneous use of multiple processing elements to solve a computational problem. Large jobs are segmented into smaller parts, which are then solved concurrently. For most of the history of computing, serial computation was practiced; one instruction set would execute, then the next. Parallel computing arose in response to the constraints Read more…

Reining in Restarts Through Selective Recovery

Nov 4, 2013 |

Computational failures take a steep toll in the HPC sciences. Events such as broken node electronics, software bugs, insufficient hardware resources, and communication faults stymy work on expensive machines and bedevil computer scientists. An article at Deixis Magazine chronicles the work of a Pacific Northwest National Laboratory researcher who is developing load balancing techniques to Read more…

Scientists Prepare Weather Model for GPU-based Systems

Oct 25, 2013 |

When Piz Daint – the Cray supercomputer installed at the Swiss National Supercomputing Center (CSCS) – was first announced, the project leaders cited the benefits for COSMO, an atmospheric model used by the German Meteorological Service, MeteoSwiss and other institutions for their daily weather forecasts. The COSMO model is maintained by the Consortium for Small-scale Read more…

Off the Wire