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Títol: Exploring the predictability of MPI messages.
Autor: Freitag, Fèlix
Caubet Serrabou, Jordi
Farreras Esclusa, Montserrat
Cortés, Toni
Labarta Mancho, Jesús José
Altres autors/autores: Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. DSG - Distributed Systems Group
Editorial: IEEE
Matèries: 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
Tipus de document: Conference report
Descripció: 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.
Peer reviewed
Altres identificadors i accés: Freitag, F; Caubet, J; Farreras, M; Cortes, T; Labarta, J. Exploring the predictability of MPI messages. A: IPDPS 2003, p. 69-76.
0-7695-1926-1
1530-2075
http://hdl.handle.net/2117/2295
Disponible al dipòsit:E-prints UPC
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