Nvidia
NetApp
HPCwire

Since 1986 - Covering the Fastest Computers
in the World and the People Who Run Them

Language Flags

Visit additional Tabor Communication Publications

Datanami
Digital Manufacturing Report
HPC in the Cloud
Green Computing Report

Tabor Communications
Corporate Video

LHC Compute Grid Teaches Some Valuble Lessons


CERN's Large Hadron Collider has proved to be an interesting test case for ultra-large-scale data collection and computation. The project, which generates petabytes of data for its particle acceleration mission, requires one of the largest and most widespread compute grids in the world. Less than a year after the collider began fully operating, the LHC project is already blazing a path for eScience.

The dominant computational theme of the LHC work is data reduction. With petabytes of data being generated every second by the LHC detectors, the challenge is to filter out the uninteresting information so that the critical data can be more easily sent to secondary sites for storage and processing.

According to an Ars Technica article penned by John Timmer, in general, the LHC cyberinfrastructure is performing even better than expected. Although a 35-year-old datacenter is forcing higher density compute clusters (and water cooling), the robust network and improving price-performance of disks have lessened the project's reliance on tape storage. Writes Timmer:

One of the reasons for the increased reliance on disks is the network that connects the global grid to CERN. "Because the networking is going so well, filling the pipes can outrun tapes," von Rueden told Ars. Right now, that network is operating at 10 times its planned capacity, with 11 dedicated connections operating at 10Gbps, and another two held in reserve. Each connection goes to one of a series of what are called Tier 1 sites, where the data is replicated and distributed to Tier 2 sites for analysis. Von Rueden said that the fiber that powers this setup has been "faster, cheaper, and more reliable than in planning."

An interesting aspect to the LHC setup at CERN is that they've decided to limit hardware support contracts to no longer than three years. The rationale is that because price-performance for hardware is rising so rapidly, it doesn't pay to keep any particular machine running too long; when it breaks down, just replace it with something cheaper and faster.


Full story at Ars Technica

Sponsored Links

Webinar: Programming Heterogeneous X64+GPU Systems Using OpenACC
Join Michael Wolfe as he compares the advantages and costs of using both low-level models and the directive-based OpenACC model for programming accelerated heterogeneous systems. Registration is free.

High-Performance Computing in Action
Businesses that want to be on the cutting edge of their industries are increasingly turning to high-performance computing (HPC) solutions to handle complex compute processes and speed up their rate of innovation. Download this Executive Brief to see how businesses in energy, life sciences and entertainment put HPC solutions to work in their operations.

Accelerate your science with Seneca
One of the first HPC providers installing a 4X NVIDIA Kepler K-20 cluster. Invites you to a free evaluation on Seneca’s NVIDIA K20 Kepler cluster, pre-loaded with AMBER, NAMD, LAMMPS

May 24, 2013

May 23, 2013

May 22, 2013

May 21, 2013

May 20, 2013

May 17, 2013

May 16, 2013

May 15, 2013

May 14, 2013

May 13, 2013


Most Read Features

Most Read Around the Web

Most Read This Just In


Feature Articles

Exascale Advocates Stand on Nuclear Stockpiles

In quieter times, sounding the bell of funding big science with big systems tends to resonate further than when ears are already burning with sour economic and national security news. For exascale's future, however, the time could be ripe to instill some sense of urgency....
Read more...

NSF Forges Further Beyond FLOPs

In a recent solicitation, the NSF laid out needs for furthering its scientific and engineering infrastructure with new tools to go beyond top performance, Having already delivered systems like Stampede and Blue Waters, they're turning an eye to solving data-intensive challenges. We spoke with the agency's Irene Qualters and Barry Schneider about..
Read more...

CERN, Google Drive Future of Global Science Initiatives

Large-scale, worldwide scientific initiatives rely on some cloud-based system to both coordinate efforts and manage computational efforts at peak times that cannot be contained within the combined in-house HPC resources. Last week at Google I/O, Brookhaven National Lab’s Sergey Panitkin discussed the role of the Google Compute Engine in providing computational support to ATLAS, a detector of high-energy particles at the Large Hadron Collider (LHC).
Read more...

Sponsored Whitepapers

Best Practices in Big Data Storage

05/10/2013 | Cleversafe, Cray, DDN, NetApp, & Panasas | From Wall Street to Hollywood, drug discovery to homeland security, companies and organizations of all sizes and stripes are coming face to face with the challenges – and opportunities – afforded by Big Data. Before anyone can utilize these extraordinary data repositories, however, they must first harness and manage their data stores, and do so utilizing technologies that underscore affordability, security, and scalability.

Progress in Parallel: the Bull Parallel Programming Center

04/15/2013 | Bull | “50% of HPC users say their largest jobs scale to 120 cores or less.” How about yours? Are your codes ready to take advantage of today’s and tomorrow’s ultra-parallel HPC systems? Download this White Paper by Analysts Intersect360 Research to see what Bull and Intel’s Center for Excellence in Parallel Programming can do for your codes.

Sponsored Multimedia

SGI DMF ZeroWatt Disk Solution

In this demonstration of SGI DMF ZeroWatt disk solution, Dr. Eng Lim Goh, SGI CTO, discusses a function of SGI DMF software to reduce costs and power consumption in an exascale (Big Data) storage datacenter.

Cray CS300-AC Cluster Supercomputer Air Cooling Technology Video

The Cray CS300-AC cluster supercomputer offers energy efficient, air-cooled design based on modular, industry-standard platforms featuring the latest processor and network technologies and a wide range of datacenter cooling requirements.

SC12 Editorial Feature HPCwire Soundbite sponsored by ISC

HPC Job Bank


Featured Events


  • June 16, 2013 - June 20, 2013
    ISC'13
    Leipzig,
    Germany

  • June 17, 2013 - June 18, 2013
    Forecast 2013
    San Francisco, CA
    United States





HPCwire Events