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'''Urgent computing''' is prioritized and immediate access on [[supercomputers]] and [[Grid computing|grids]] for emergency computations such as severe weather prediction during matters of immediate concern.<ref>[https://web.archive.org/web/20080228143847/http://spruce.teragrid.org/ Spruce; Special Priority and Urgent Computing Environment]{{unreliable source?|date=August 2023}} spruce.teragrid.org</ref><ref>{{cite journal |last1=Beckman |first1=Pete |title=Urgent Computing: Exploring Supercomputing's New Role |journal=CTWatch Quarterly |date=March 2008 |volume=4 |issue=1 |url=https://icl.utk.edu/ctwatch/quarterly/articles/2008/03/urgent-computing-exploring-supercomputings-new-role.html }}</ref>
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Urgent Computing refers to the concept of using regular Supercomputers and Grids for emergency computations such as severe weather prediction during matters on immediate concern. Applications that provide decision makers with information during critical emergencies get prioritized access to compute resources using Urgent Computing.
 
Applications that provide decision makers with information during critical emergencies cannot waste time waiting in [[job queue]]s and need access to [[computational resource]]s as soon as possible.<ref>{{cite thesis |last1=Cope |first1=Jason M |date=2009 |title=Data management for urgent computing environments |id={{ProQuest|304873520}} |oclc=650213207 }}{{page needed|date=August 2023}}</ref> Systems for urgent computing commonly use dedicated resources to ensure immediate and dedicated access to urgent computations. However, recent studies have shown the possibility of using shared resources to make urgent computing more economical.<ref>{{Cite journal |title=Preemptive Parallel Job Scheduling for Heterogeneous Systems Supporting Urgent Computing |date=2021 |doi=10.1109/access.2021.3053162 |last1=Agung |first1=Mulya |last2=Watanabe |first2=Yuta |last3=Weber |first3=Henning |last4=Egawa |first4=Ryusuke |last5=Takizawa |first5=Hiroyuki |journal=IEEE Access |volume=9 |pages=17557–17571 |bibcode=2021IEEEA...917557A |doi-access=free }}</ref>
High-performance modeling and simulation are playing a driving role in decision making and prediction. For time-critical emergency support applications such as severe weather prediction, flood modeling, and influenza modeling, late results can be useless. Computer models must be run and the data analyzed while their predictions can still be applied. These on-demand large-scale computations can't wait endlessly in a job queue for supercomputer resources to become available. Neither can the community keep multimillion-dollar infrastructures idle until required by urgent computation.A specialized infrastructure is needed to provide computing resources quickly,automatically, and reliably.
 
==References==
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[[Category:Grid computing]]
[[Category:Supercomputers]]
 
 
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