Distributed European Infrastructure for Supercomputing Applications: Difference between revisions

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==History==

The DEISA project started as DEISA1 in 2002 developing and supporting a pan-European distributed high performance computing infrastructure. The initial project was funded by the [[European Commission]] in the sixth of the [[Framework Programmes for Research and Technological Development]] (FP6) from 2004 through 2008.<ref>{{Cite web |title= Distributed European Infrastructure for supercomputing applications |work= Project funding web site |publisher= [[CORDIS]] |url= http://cordis.europa.eu/project/id/508830 |accessdate= 21 December 2023 }}</ref> The funding continued for the follow-up project DEISA2 in the Seventh Framework Programme (FP7) through 2011.<ref>{{Cite web |title= Distributed European infrastructure for supercomputing applications 2 |work= Project funding web site |publisher= [[CORDIS]] |url= http://cordis.europa.eu/project/id/222919 |accessdate= 21 December 2023 }}</ref>

<ref>{{Cite webjournal | last1=
Lederer | first1=
H. |title= DEISA2: Supporting and developing a European high-performance computing ecosystem | workjournal=

Journal of Physics: Conference Series |url= https://iopscience.iop.org/article/10.1088/1742-6596/125/1/011003 |accessdatedate= 21 December 2023 }}</ref>

2008 | volume=

125 | issue=

1 | page=

011003 | doi=

10.1088/1742-6596/125/1/011003 | bibcode=

2008JPhCS.125a1003L |url= https://iopscience.iop.org/article/10.1088/1742-6596/125/1/011003 |accessdate= 21 December 2023 }}</ref>

The DEISA infrastructure coupled eleven national supercomputing centres with a dedicated (mostly 10&nbsp;Gbit/s) network connection provided by [[GEANT2|GÉANT2]] on the European level and the [[national research and education network]]s (NRENs).

<ref>{{Cite webencyclopedia |title= DEISA supercomputing network |workencyclopedia= Britannica Science&Tech web site |url= https://www.britannica.com/topic/DEISA |accessdate= 21 December 2023 }}</ref>

DEISA was the first initiative to overcome the fragmentation of supercomputing resources in Europe. PartParts of the national supercomputing resources were provided for most challenging computational projects from all over Europe, providing access to the most advanced and most suitable supercomputer archtitecturesarchitectures available, for positively reviewed projects. Through DECI, the DEISA Extreme Computing Initiative, not only computing resources, but also advanced application enabling was provided.

==Consortium==

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==DEISA Extreme Computing Initiative - DECI==

The DEISA Extreme Computing Initiative (DECI) was launched in 2005 to enhance DEISA's impact on science and technology. Multi-national proposals were especiallyin encouragedEurope. DEISA carried out 6 DECI projects until 2010. After the end of DEISA, DECI was continued by PRACE as Tier-1 level services under the name of "Distributed European Computing Initiative".Then, while the new PRACE Tier-0 level services became the leading edge of supercomputing in Europe.

provided the leading edge of supercomputing in Europe.

==The DEISA TeraGrid Collaboration==

DEISA was the European counterpart of the US NSF funded TeraGrid project.

DEISA was the European counterpart of the US NSF funded TeraGrid project. In a collaborative effort, a supercomputing hyper-grid spanning two continents was created in 2005 to move a step towards interoperability of leading grids. A dedicated network connection was established between DEISA, the leading European supercomputing grid, and TeraGrid, the leading American supercomputing grid. Both grids had adopted the approach of establishing a common, high performance global file system, the wide-area version of IBM's GPFS. Teragrid's approach was based on a single site server solution under Linux, hosted by San Diego Supercomputer Centre, DEISA's approach was a multi-site server solution, with servers in France, Germany and Italy. These two grid-internal global file systems were interconnected over a dedicated, trusted network connection. During the Supercomputing Conference 2005, grand challenge applications were carried out both within DEISA and within TeraGrid, and results were written transparently to the combined global file system with physically distributed locations of the involved disk systems.

<ref>{{Cite webencyclopedia |title=Exploring theTeraGrid hyper-gridsupercomputing ideanetwork with|encyclopedia= grandBritannica challengeScience&Tech applications:web thesite DEISA-TeraGrid interoperability demonstration|url= https://ieeexplorewww.ieeebritannica.orgcom/documenttopic/1652053TeraGrid |accessdate= 2123 December 2023 }}</ref>

In a collaborative effort in 2005, a dedicated trusted network connection was established between DEISA and TeraGrid, to implement a combined global file system spanning two continents. During the Supercomputing Conference 2005, supercomputing applications were carried out both in Europe and in the US with output transparently written to the unified global file system. For details see "Exploring the hyper-grid idea with grand challenge applications: the DEISA-TeraGrid interoperability demonstration".

<ref>{{Cite book |last1= Andrews |first1= P. |last2= Buechli |first2= M. |last3= Harkness |first3= R. |last4= Hatzky |first4= R. |last5= Jordan |first5= C. |last6= Lederer |first6= H. |last7= Niederberger |first7= R. |last8= Rimovsky |first8= A. |last9= Schott |first9= A. |last10= Soddemann |first10= T. |last11= Springel |first11= V. |title= 2006 IEEE Challenges of Large Applications in Distributed Environments |chapter=Exploring the hyper-grid idea with grand challenge applications: the DEISA-TeraGrid interoperability demonstration|date= 2006 |pages= 43–52 |doi= 10.1109/CLADE.2006.1652053 |isbn= 1-4244-0420-7 }}</ref>

==DEISA Publications==

DEISA published a brochure in 2008 and DEISA Digests in 2008, 2010 and 2011.

DEISA Brochure: Advancing Science in Europe (ISBN 978-952-5520-32-3)

<ref>{{Cite web |title= DEISA: Advancing Science in Europe |url= https://www.lederers.eu/Hermann/DEISA/DEISA-Brochure.pdf |accessdate= 21 December 2023 }}</ref>

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<ref>{{Cite web |title= DEISA Digest 2010 | url= https://www.lederers.eu/Hermann/DEISA/DEISA_DIGEST_2010.www.pdf |accessdate= 21 December 2023 }}</ref>

DEISA Digest 2011: Extreme computing in Europe (ISBN 978-952-5520-3340-08)

<ref>{{Cite web | title= DEISA Digest 2011 |url= https://www.lederers.eu/Hermann/DEISA/DEISA-DIGEST_2011DEISA_DIGEST_2011.www.pdf |accessdate= 21 December 2023 }}</ref>

==DEISA Benchmark Suite==