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Title:
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Exploring the predictability of MPI messages.
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Author:
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Freitag, Fèlix; Caubet Serrabou, Jordi; Farreras Esclusa, Montserrat; Cortés, Toni; Labarta Mancho, Jesús José
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. DSG - Distributed Systems Group |
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Abstract:
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Scalability to a large number of processes is one of the weaknesses of current MPI implementations. Standard implementations are able to scale to hundreds of nodes,
but no beyond that. The main problem of current implementations is that performance is more important than scalability and thus some assumptions about
resources are taken that will not scale well.
The objective of this paper is twofold. On one hand, we
show that characteristics such as the size and the sender
of MPI messages are very predictable (accuracy above 90%). On the other hand, we present some examples
where current MPI implementations would not work well
when run on a large configuration and how this
predictability could be used to solve the scalability
problem. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors::Arquitectures distribuïdes
-Distributed systems
-Application program interfaces
-Message passing interface
-Parallel computation
-Software performance evaluation
-MPI implementations
-MPI message predictability
-Sistemes distribuïts |
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Rights:
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Document type:
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Conference Object |
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Published by:
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IEEE
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Share:
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