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@@ -2,7 +2,7 @@
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*
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* Copyright (C) 2010-2017 CNRS
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* Copyright (C) 2011-2012,2016 Inria
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- * Copyright (C) 2009-2011,2014,2016 Université de Bordeaux
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+ * Copyright (C) 2009-2011,2014,2016, 2018 Université de Bordeaux
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*
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* StarPU is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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@@ -169,6 +169,19 @@ Data transfer stats:
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Total transfers: 2.27 GB
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\endverbatim
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+\subsection MPI-relatedFeedback MPI-related Feedback
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+
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+Statistics about the data transfers which were performed over MPI can be
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+obtained by setting the environment variable \ref STARPU_COMM_STATS to <c>1</c>;
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+a summary will then be displayed at program termination:
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+
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+\verbatim
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+[starpu_comm_stats][0] TOTAL: 4.000000 GB 4.000000 GB
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+[starpu_comm_stats][0->1] 4.000000 GB 4.000000 GB
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+[starpu_comm_stats][1] TOTAL: 8.000000 GB 8.000000 GB
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+[starpu_comm_stats][1->0] 8.000000 GB 8.000000 GB
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+\endverbatim
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+
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\subsection StarPU-TopInterface StarPU-Top Interface
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StarPU-Top is an interface which remotely displays the on-line state of a StarPU
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