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May 30, 2007
iSGTW Acronym of the Week - DAGMan

Acronym of the Week - DAGMan A Directed Acyclic Graph represents job dependency: each graphical node signifies a job, and the arcs identify job dependencies. This DAG shows the computational pipeline managed by Condor for the Laser Interferometer Gravitational-Wave Observatory project.Image courtesy of LIGO Scientific CorporationThe word “dag” can have many meanings. The American Heritage Dictionary of English Language defines it as “a lock of matted or dung-coated wool”. In Turkish the word means “mountain.” In Australasia, a dag is someone who dresses badly and has poor social skills. Thus one's interest might justifiably be piqued by the acronym “DAGMan.” Thankfully, DAGs have very little to do with types of dags to which we might be accustomed. In fact, a DAG is a Directed Acyclic Graph, a way of representing jobs and job dependencies. They are particularly useful when the input, output, or execution of one job is dependent on that of another.DAGMan is a piece of software tha

May 23, 2007

Statistic of the Week - 318 Stock image from sxc.huFor those new to grid computing, or those who wonder what happened to all the real words, the Enabling Grids for E-sciencE glossary can provide a ready guide to the acronyms and keywords that pop up in almost every grid-related sentence. The glossary defines 318 acronyms. The EGEE project, now in its fourth year, was reviewed by an independent panel nominated by the European Commission at CERN in Switzerland last week. Presumably the reviewers didn’t have too much of a problem sorting their GUIs from their GILDAs: their preliminary comments were very positive. “Anyone involved in EGEE had very high expectations, and we haven’t been disappointed,” said one of the reviewers. “Overall we assessed the project as performing excellently.”Can’t find your personal favorite in the EGEE Glossary? Send an e-mail to [email protected] and do your bit to help demystify grids.. 

May 9, 2007

Link of the Week - Gridcast.org Go to Gridcast.org this week to hear the latest from the OGF20/EGEE User forum. Gridcasts share the excitement of the emerging developments in the grid field with the public. This week Gridcast.org will be casting from the joint 20th Open Grid Forum and the Enabling Grids for E-sciencE User forum in Manchester, England. Gridcasts are a combination of blogs, podcasts and videos. This week’s Gridcasts will from eight people with different backgrounds participating in the meetings. They will share ideas, experiences, feelings, impressions, anything helpful to make the public “feel like they were there.”Check it out at www.gridcast.org.

May 2, 2007

Link of the Week - Grid Technology Training at Georgetown University A class in April 2007 at Georgetown University’s Advanced Research Computing center introducing Beowulf design, planning, building and administration.Image courtesy of Arnie Miles The Georgetown University Advanced Research Computing division and the Center for Continuing Education have created a certification program for computer systems administrators wanting to advance in the fields of high performance and high throughput computing. The Advanced Research Computing division is also offering training in parallel and distributed programming. This will give students a full spectrum of high performance and high throughput computational training. These programs are designed to help workers develop the skills necessary to compete in this growing field. Training materials from these classes is available in a free online wiki. “The goal behind these programs is to build a work force,” says Arnie Miles, one of the instructors. “For t

April 25, 2007

Statistic of the Week - 250 CERN computer center operator at an IBM 370 in the early 1980s.Image copyright CERNIn 1990 the CERN Computer Center contained less than 250 CERN Computing Units. The CERN Unit of processing power was a standard proposed in 1985 by Eric McIntosh of the CERN computing division, then called “DD” for Data-handling Division. One CERN Unit (CU) corresponded to the power of a single CPU of an IBM 370 Model 168, or to that of a DEC Vax 8600. It was based on execution speed of a standard set of HEP code assembled by McIntosh. This code set was later incorporated as part of the SpecINT standard, a world measure for CPU power which is in general use today.The CERN Unit was equivalent to about 4 Million floating point operations per second (i.e. 4 Mips), or roughly 2 units of the more modern SpecINT2000 standard.The approximate 250 CERN Units in 1990 came primarily from the IBM complex (about 150 units), the Cray XMP-48 (about 50) and the biggest DEC Vax, the Model 9000 (contributing about 10).

April 18, 2007

Acronym of the Week - AtlanTICC An example of climate modeling that was carried out using distributed computing, facilitated by the Lambda Rail. Image courtesy of AtlanTICC AllianceA tripartite alliance between scientific research centers in the United Kingdom and United States, the AtlanTICC Alliance seeks to develop and exploit the results of research and training at its three partner institutions: Imperial College London, UK; Georgia Institute of Technology, U.S.; and Oak Ridge National Laboratory, U.S. One of their research themes, Enabling Technologies, includes research in grid technology and seeks to “Create the technological structure for tomorrow’s leaders in science and technology.”Last month Lambda Rail, the high speed network connection between all three AtlanTICC Alliance institutions, became fully operational. To learn more visit the AtlantTICC Alliance Web site.

April 4, 2007
iSGTW Statistic of the Week - World Community Grid

Statistic of the Week - 1,000 Image courtesy of IBMEach week the World Community Grid, a volunteer computing project, receives about 1,000 years of run time from its members for grid-based humanitarian research. Researchers from around the world benefit from the World Community Grid, a philanthropic project run by IBM. Some of the projects running currently include genomic comparison, protein folding studies and HIV/AIDS, Dengue Fever and Muscular Dystrophy research. To participate visit the World Community Grid Web site to download software which will enable your computer to donate unused processing power.

March 28, 2007

Link of the Week - Web Cams in the ATLAS Cavern The ATLAS Collaboration has installed Web cams in their cavern so you can see what is going on. Image courtesy of ATLASEvery half hour during a workday the ATLAS cavern Web cams snap a picture of the ongoing ATLAS detector installation. Marzio Nessi, an ATLAS collaborator, proposed the Web cams in 2003 as installation was about to begin in the cavern. The pictures visually record the process and help interested people, both in the collaboration and outside, remain informed. “We’re amazed at how much interest there has been from the outside,” says Nessi. “Far beyond 100,000 people have logged in to view the Web cams.”ATLAS is one of the particle physics experiments at CERN’s Large Hadron Collider.

March 21, 2007

Acronym of the Week - GIMPSThe Great Internet Merseene Prime Search is a project that links tens of thousands of computers world wide in search of prime numbers in the form of 2P-1. Volunteers contribute to the search by downloading GIMPS software to their personal computer. The program runs at low priority, using spare CPU cycles to process work assigned by PrimeNet, a central server on the internet, and report the results.  The last Merseene prime, 232,582,657-1, was discovered in September of last year by a team at the University of Central Missouri in the United States using GIMPS. There are 44 known Mersenne primes. A volunteer’s chance of finding a new Mersenne prime is about 1 in 150,000. To learn more visit the GIMPS Web page.  

March 7, 2007
iSGTW Statistic of the Week - 4.3 Million

Statistic of the Week - 4.3 Million A simulation of the drug binding to a protein from the malaria parasite. Image Credit Vinod KASAM, CNRS/IN2P3Number of potential malarial medicines tested in two and a half months by the second phase of the WISDOM initiative. WISDOM analyzed possible docking arrangements between drug compounds and target proteins of the malaria parasite, with the hope of accelerating the search for anti-malarial drugs.  The WISDOM initiative, carried out as an international cooperative project, completed January 31. Several international calculation grids made WISDOM possible, including EGEE, AuverGrid, EELA, EUMedGrid, EUChinaGrid, TWGrid, BioinfoGrid and Embrace.To learn more click here.

February 28, 2007

Link of the Week - nanoHUB.org Structure of a lipid bilayer computed by nanoGromacs, of nanoHUB.orgCourtesy of nanoHUB.org nanoHUB.org offers free online simulation tools and educational material for teaching and research in nanotechnology. Users can choose from almost 50 simulation tools, allowing them to simulate solar cells, networks of carbon nanotubes and nano-transistors, among many other structures. The tools appear to run as applets in a browser window, but they are powered by a remote HUB infrastructure. No software is installed or uploaded to a users computer. In order to run simulations, you must log in with a nanoHUB username and password.  Initial testing is currently under way to enable end users to execute the most processing-intensive tools to both Open Science Grid and TeraGrid resources.  In addition to online simulation tools, nanoHUB also hosts online classes and seminars on subjects including quantum transport, nanoelectronics and nanophotonics.nanoHUB is supported by the National Science Fo

February 21, 2007

Link of the Week - New to Grid Computing? As part of their resources for developers, IBM offers an introduction to grid computing. On their page “New to grid computing” they address questions like “What is grid computing?” “Why is it important?” and “Can I build a grid today?” Visit the Web site to learn more.  

February 14, 2007
iSGTW Sound of the Week: Listening to Volcanoes

iSGTW Sound of the Week: Listening to Volcanoes Detail of a waveform showing the beginning of an eruption phenomenon in Mt. Etna, Catania, Italy.Image courtesy of D. Vicinanza, Mt. Etna Volcano Sonification. Listen to Mt. Etna , a volcano near Catania, Italy. The Musical Inaudia sound laboratory at the University of Salerno, Italy, transformed data from a digital seismograph placed on the Mt. Etna volcano into sound: a process known as data sonification. You can also listen to other sounds, including more musical options. These computationally intense sonifications were carried on in collaboration with Italy’s National Institute of Nuclear Physics grid as part of thethe Mt. Etna Volcano Sonification project.  

February 14, 2007

Statistic of the Week: 100 The German e-Science Initiative, founded by the German Ministry for Research and Education, is funding over 100 German research organizations with 100 Million Euros over the next five years as part of the D-Grid initiative. The initiative’s goal is to design, build and operate grids for the German scientific community. To learn more click here.  

February 7, 2007
iSGTW Link of the Week - Results Posted for BBC Climate Experiment

Link of the Week: Results Posted for BBC Climate ExperimentIn 2006, more than 250,000 members of the global public worldwide volunteered spare processing power from their personal computers to participate in the largest yet climate modeling experiment. A team from the University of Oxford compiled the data to predict the Earth’s climate through the year 2080. The results are now posted on the BBC's Web site. The BBC teamed up with Climateprediction.net to conduct the experiment. The Climateprediction.net consortium is led by the University of Oxford, and includes The Met Office, The University of California - Berkeley, The London School of Economics, The Open University, The University of Reading and The Rutherford Appleton Laboratory. This experiment was funded by the UK Natural Environment Research Council, with additional support from Microsoft Corporation.

January 31, 2007

Acronym of the Week: ISSeG The Integrated Site Security for Grids project complements grid computer security by creating and disseminating practical site security recommendations. Grid security concerns middleware, authentication, authorisation and operation across multiple administrative domains. Site security concerns site-wide technical, administrative and educational security measures. The project provides advice on integrated site security to ensure that a site’s policies, rules, awareness and training all evolve in step with technological or administrative developments. The ISSeG project is co-funded by the European Commission, led by the European Organization for Nuclear Research (CERN) in Switzerland, and includes Forschungszentrum Karlsruhe in Germany and the Council for the Central Laboratory of the Research Councils based in the United Kingdom.- Kate Bradshaw, ISSeG  

January 24, 2007

Statistic of the Week: 3200 Number of regular users of the TeraGrid, up five-fold since the project's starting point of 600 users in 2004. Source: Globus Consortium Journal  

December 13, 2006

Acronym of the Week: GrEnaDE

GrEnaDE, which stands for Grid-Enabled Desktop Environments, is a project that aims to accelerate the rollout of computational grids by addressing the issues of accessibility and visibility directly, through tight integration of grid functionality within the user's desktop. GrEnaDE builds on existing grid and commodity technologies to provide small but tangible improvements to usersÂ’ desktop environments. GrEnaDE is a project of the Manchester Research Centre for Computational Science at the UK's University of Manchester.

December 6, 2006

Link of the Week: Grid Computing on Wikipedia

The Grid Computing page on Wikipedia, the free and user-created Web encyclopedia, was featured as a link of the week in one of the first issues of the original Science Grid This Week. One and a half years later, the content of the page has received some much-needed updating, but it could still use your help. Visit Wikipedia and share some of your grid computing knowledge with the rest of the world, or simply add a link to your grid project or application.

December 6, 2006

Statistic of the Week: $0.10

The amount charged per computing hour by AmazonÂ’s computing-on-demand service. One gigabyte of data storage per month costs $0.15. AmazonÂ’s service, and others like it, may revolutionize the way scientists use computing power.

Source: “Amazon puts network power online” at [email protected].

November 29, 2006

Acronym of the Week: GUMS

GUMS, which stands for Grid User Management System, is a grid identity mapping service. Identity mapping is necessary when a grid site's resources do not use grid credentials but instead use a different mechanism to identify users, such as UNIX accounts or Kerberos principals. In these cases, the grid credential for each incoming computing job must be associated with an appropriate site credential. The GUMS server performs this mapping and communicates it to the gatekeepers. GUMS was developed at Brookhaven National Laboratory in the United States, and is part of the authorization infrastructure for the Open Science Grid.