OSG Newsletter July 2009

Open Science Grid

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OSG Newsletter, July 2009

From the Executive Director
The main event for OSG this past two months was support for the LHC experiments “Step’09”. More details are in the article below.

Paul Avery gave a keynote address at the recent TeraGrid? ’09 conference. There is a very nice article in HPCWire http://www.hpcwire.com/features/TeraGrid-09-OSG-and-TeraGrid-Collaboration-50048842.html and his talk is posted at http://www.phys.ufl.edu/~avery/griphyn/talks/avery_teragrid_2009jun23_v5.ppt <http://www.phys.ufl.edu/%7Eavery/griphyn/talks/avery_teragrid_2009jun23_v5.ppt> for all to read.

We have posted the annual report to the NSF, which is publicly available at http://osg-docdb.opensciencegrid.org/cgi-bin/ShowDocument?docid=860
We thank everyone for their contributions, and especially Chander and Paul for pulling the whole thing together so quickly.

We say Au’Revoir to Anne Heavey in her role as US iSGTW editor. Anne has done a sterling job since stepping into Cristy’s shoes when she left last year. We will miss her experience and knowledge of the science and research going on in our communities, both in the US and abroad.

Miriam Boon is starting as the first US “full-time” editor next week. Miriam is currently finishing her master’s degree in journalism at Ryerson University. I look forward to welcoming her to the OSG and for you all to meet her over the next few months; and to the continuation of iSGTW as the quality e-weekly collaboration between us and our European colleagues at EGEE and GridPP?.

~Ruth Pordes

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Step 09'
In June the WLCG project focused on STEP09, a co-ordinated effort of all four LHC experiments to test the grid infrastructure by running as much simultaneous activity as possible. The aim was to exercise at a nominal rate the real data recording (Tier0), transfer (Tier0->Tier1), reconstruction (Tier0+Tier1 for LHCb, Tier0 for others), re-processing (Tier0+Tier1 from data not present on the disk cache, i.e. recalled from tape), and simulation.

ATLAS and CMS included data distribution and analysis to the Tier2s as part of the activity. OSG contributed through our provision of the underlying software stacks, ramping up our attention to operations and monitoring activities, and standing ready to help sites and users with any problems.

Thus, both US ATLAS and US CMS extended the goals of STEP09 to really stress data distribution to the Tier2s and enable users to do analysis.
Careful attention was paid to faults and performance overloads of all services–there have been several lessons learned at the Tier1s and the Tier0s (used by all experiments simultaneously).

The activity was a success and has resulted in press releases (http://www.hpcwire.com/offthewire/STEP09-Demonstrates-LHC-Readiness-49631242.html)
from CERN and elsewhere.

A detailed workshop to postmortem the lessons learned has some interesting presentations posted at http://indico.cern.ch/conferenceTimeTable.py?confId=56580

From OSG’s perspective, our services stood up to the test well with no major issues encountered. There are a few resulting software patches in new releases of components that will be included in the OSG 1.2 release coming out in about a month.

~Ruth Pordes, WLCG OSG MB representative

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OSG Storage Forum
More than thirty-five people attended the OSG Storage Forum last week. The talks and the discussions covered not only existing storage technologies currently accessible on OSG resources, but also emerging interest in Lustre, Hadoop and REDDnet. There was continued focus on storage performance, reliability and scalability, and readiness to satisfy the needs of LHC. The whole session was dedicated to the discussion of the requirements and possible storage solutions for Tier-3 sites that are categorized by being smaller-scale university sites with only very-part-time professional system administrators available.

The open discussion led by Frank Wuerthwein gave us the “top three needs” from several perspectives, including requirements from Tier-2 and
Tier-3 sites and expectations of the OSG Storage Group from storage administrators. The needs to improve storage reliability and ease of use and to provide guidance in network and NFS setup and tuning are listed among other requirements. This list will help us plan our work for FY10.

There are lots of useful talks posted on the Storage Forum site (http://indico.fnal.gov/conferenceOtherViews.py?view=standard&confId=2538 <http://indico.fnal.gov/conferenceOtherViews.py?view=standard&confId=2538>).

~Tanya Levshina

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Track the OSG Sponsored Students at iSGGC 09'

Once again OSG has sponsored students to attend the International Summer School for Grid Computing (http://www.iceage-eu.org/issgc09/index.cfm).
For two weeks, the students will be immersed in the concepts and fundamentals of distributed computing and will complete hands-on exercises, and eventually, a competition, using today’s grid technologies.

Each student presented their work—and they really are doing some interesting things—to Alina Bejan and Alain Roy in an online forum. View the school and student presentations (https://twiki.grid.iu.edu/bin/view/Education/OrientationISSG09).
Shantenu Jha from the LSU TeraGrid? group is collaborating with the OSG EOT team to work with the students attending the school from US cyberinfrastructure programs.

The students will be blogging again this year at http://osg-eot.blogspot.com/. Afterwards, we will follow up with them as a group to help them bring their new knowledge and tools back to their campus to share with others.

Also, for the first time, OSG collaborated with the TeraGrid? student program, led by Laura McGinnis?, so that some of the students to present papers at the recent TG’09 conference.

~Alina Bejan, Alain Roy

 

-- RuthPordes - 04 Feb 2012

Topic revision: r1 - 04 Feb 2012 - 15:54:24 - RuthPordes
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