Will need access to machines for simulations
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"your own" for "small" simulations
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NSF/DoE supercomputer centers for "large" simulations
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Need databases (Oracle) for data and metadata
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What volume is needed?
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How and where should it be stored
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Need communication links
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Internet2/vBNS is improving networking
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Collaboration involves "asynchronous" (off-line) and "synchronous" (interactive)
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Asynchronous includes web pages and electronic mail
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Synchronous includes chat rooms, whiteboards, audio-video conferencing, shared data display etc.
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e.g. NPAC's TangoInteractive or NCSA's Habanero
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Collaborate inside and outside community (crisis managers)
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