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A global run
defined as a sequence of local runs.
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A local run is
an execution of the tool over a given src-
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dest pair.
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A global run
contains exactly one local run for every
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src-dest pair.
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The state
of a global run represents which src-dest
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pairs have been
tested so far (and which have not).
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Wrapper running
at a given host starts the tool with the
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correct
destination basing on the state, and after
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completion it
updates the state and runs a new
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wrapper on the
next designated host with the new
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state.
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