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@@ -479,6 +479,11 @@ each task, only the MPI node which owns the data being written to (here,
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@code{data_handles[x][y]}) will actually run the task. The other MPI nodes will
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automatically send the required data.
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+This can be a concern with a growing number of nodes. To avoid this, the
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+application can prune the task for loops according to the data distribution,
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+so as to only submit tasks on nodes which have to care about them (either to
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+execute them, or to send the required data).
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+
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@node MPI Collective Operations
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@section MPI Collective Operations
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