ࡱ> ;=:b  jbjb $2222222hpppp | h=,OR22222FZ222222 p  0=''2hh dhh Scientific Workflows and Cloud Computing Gideon Juve The proliferation of commercial cloud computing providers has generated significant interest in the scientific computing community. Much recent research has attempted to determine the benefits and drawbacks of cloud computing for scientific applications. Although clouds have many attractive features, such as virtualization, on-demand provisioning, and "pay as you go" usage-based pricing, it is not clear whether they are able to deliver the performance required for scientific applications at a reasonable price. This talk will explore the potential benefits of cloud computing for scientific workflow applications. It will present the performance and cost of clouds from the perspective of an astronomy application. We will show experiments of running Montage on a commercial cloud and on a typical HPC system, and we analyze the various costs associated with running workflows in the cloud. Particular emphasis will be given to issues of data management in cloud environments.   h%Kh%Kh%Kh%K^J_H ):;  $a$gd%K $1$7$8$H$a$gd%K ":p%K/ =!"#$%@@@ NormalOJQJaJmH sH tH DA@D Default Paragraph FontRi@R  Table Normal4 l4a (k@(No List z):;00000);000   59@d'@ @UnknowngTimes New RomanTimes New Roman5Symbol3 Arial;Helvetica qh$r&r~4d`? V(Scientific Workflows and Cloud Computingthhthh Oh+'0:  8 D P\dlt|',Scientific Workflows and Cloud ComputingthhNormalthh1Microsoft Word 11.5.0@@V'{@a-)tio-c)+n-).-c)  )  -) We-0+)> -)will-)9 -) show-0+)a -) exper-c)hi-) me-c)9n-)ts-c)  -) of-c)" -) ru-c)%n-)ning-0+)N -)Mo-c)9n-)tag-c)9e -(awon- `v). -)a- `v) -)co-c),m-)#mercial - ) -)cl-c)o-)ud - ). -)and-c)E -)on - ). -)a-) -)typical - )u -c)H-)PC - )9 -)sy-c)*s-)te-c)"m-)#, - )  -)and-c)E w-)8e - ) -)analyze-c) t-)%he - ). -)various- `v) -)cost-c)Ls -(w associated-0) -)w-c)i-) th-W)" -)running-c) -)work-c)Xf-) lows-W)S -)in-c)  -)the-W)9 -)clou-c)Ld-).-W)  -c) -) Pa-c)2r-)t-c) i-) cular-0)Z -)emphasis-0) -)wi-c)'l-) l-W)  -)be-c). -)given-W)c -)to-c)" -)issues-W)v -)o-c)f -(wdat-c)9a-) -c) m-)#anag-c)\e-)me-c)9n-)t in-)7 -c) c-)lou-c)7d-) ) enviro-c)qn-)me-c)9n-)ts.- )+ - %(w  ! ! ! !  ! ! !  ! ! !  ! ! !  ! ! !  ! ! !  ! ! !  ! ! !  ! ! ! ՜.+,0 `hpx  ' )Scientific Workflows and Cloud Computing Title  !"#$%&'()*+,-./013456789<Root Entry F.@>1Table WordDocument$SummaryInformation(;DocumentSummaryInformation82CompObjXObjectPool.@.@ FMicrosoft Word DocumentNB6WWord.Document.8