iSGTW - International Science Grid This Week
iSGTW - International Science Grid This Week

Home > iSGTW 15 October 2008

Issue 96: iSGTW 15 October 2008

 Opportunistic storage increases grid job success rate

The DZero high-energy physics experiment at Fermilab, an Open Science Grid user, typically submits 60,000-100,000 jobs per week at 23 sites. The experiment’s application executables make many requests for input data in quick succession.  Due to the lack of storage local to the processing sites, up until recently much of DZero’s data had to transfer in real-time over the wide area network, leading to high latencies, job timeouts and job failures.

OSG worked with member institutions to allow DZero to use opportunistic storage, that is, idle storage on shared machines, at several sites. This represents the first successful deployment of opportunistic storage on OSG, and opens the door for other OSG Virtual Organizations. With allocations of up to 1 TB at sites where it processes jobs, DZero has increased its job success rate from roughly 30% to upwards of 85%.

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Feature - Volunteer computing

Tracking malaria vaccines

How do you predict the results of a malaria vaccine? With the grid, and volunteer computing.

Nicolas Maire and his colleagues at the Swiss Tropical Institute in Basel studied the use of computer simulations to predict the epidemiological impact of potential malaria vaccines.  These predictions were obtained with the help of thousands of volunteers who made their computers available to

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Opinion - Computing speed                      

Reaching for the Exa-scale

Kilo, mega, giga, tera, peta . . . exa?

How do we reach the next milestone in the number of floating-point operations per second, and get into the Guinness Book of World Records? The founder of BOINC tells us how this can be achieved, by using a combination of volunteer computing and the chips originally developed for the graphics in video games.

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Link of the week

/ LHC Inauguration

Imagine you are having the president of France over for lunch on 21 October, to celebrate your new super-collider.

What do you serve?

Nitrogen-cooled ice-cream, of course . . . 

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Image of the week


In the world of physics, “compact” is relative. Here is the “Compact” Muon Solenoid, or CMS, as shot by Peter McCready, who has been creating a series of panoramic views of all the experiments.

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 iSGTW 22 December 2010

Feature – Army of Women allies with CaBIG for online longitudinal studies

Special Announcement - iSGTW on Holiday

Video of the Week - Learn about LiDAR


NeHC launches social media

PRACE announces third Tier-0 machine

iRODS 2011 User Group Meeting

Jobs in distributed computing


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 Mark your calendar

December 2010

13-18, AGU Fall Meeting

14-16, UCC 2010

17, ICETI 2011 and ICSIT 2011

24, Abstract Submission deadline, EGI User Forum


January 2011

11, HPCS 2011 Submission Deadline

11, SPCloud 2011

22, ALENEX11

30 Jan – 3 Feb, ESCC/Internet2


February 2011

1 - 4, GlobusWorld '11

2, Lift 11

15 - 16, Cloudscape III

More calendar items . . .


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