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BibTeX
The scalable process topology interface of MPI 2.2
Concurrency and computation, 2011-03, Vol.23 (4), p.293-310
Hoefler, Torsten
Rabenseifner, Rolf
Ritzdorf, Hubert
de Supinski, Bronis R.
Thakur, Rajeev
Träff, Jesper Larsson
2011
Details
Autor(en) / Beteiligte
Hoefler, Torsten
Rabenseifner, Rolf
Ritzdorf, Hubert
de Supinski, Bronis R.
Thakur, Rajeev
Träff, Jesper Larsson
Titel
The scalable process topology interface of MPI 2.2
Ist Teil von
Concurrency and computation, 2011-03, Vol.23 (4), p.293-310
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
The Message‐passing Interface (MPI) standard provides basic means for adaptations of the mapping of MPI process ranks to processing elements to better match the communication characteristics of applications to the capabilities of the underlying systems. The MPI process topology mechanism enables the MPI implementation to rerank processes by creating a new communicator that reflects user‐supplied information about the application communication pattern. With the newly released MPI 2.2 version of the MPI standard, the process topology mechanism has been enhanced with new interfaces for scalable and informative user‐specification of communication patterns. Applications with relatively static communication patterns are encouraged to take advantage of the mechanism whenever convenient by specifying their communication pattern to the MPI library. Reference implementations of the new mechanism can be expected to be readily available (and come at essentially no cost), but non‐trivial implementations pose challenging problems for the MPI implementer. This paper is first and foremost addressed to application programmers wanting to use the new process topology interfaces. It explains the use and the motivation for the enhanced interfaces and the advantages gained even with a straightforward implementation. For the MPI implementer, the paper summarizes the main issues in the efficient implementation of the interface and explains the optimization problems that need to be (approximately) solved by a good MPI library. Copyright © 2010 John Wiley & Sons, Ltd.
Sprache
Englisch
Identifikatoren
ISSN: 1532-0626, 1532-0634
eISSN: 1532-0634
DOI: 10.1002/cpe.1643
Titel-ID: cdi_proquest_miscellaneous_896172708
Format
–
Schlagworte
Adaptation
,
communication patterns
,
Concurrency
,
Libraries
,
Mapping
,
message passing interface
,
MPI
,
MPI 2.2
,
MPI forum
,
Optimization
,
process mapping
,
process topologies
,
Programmers
,
reordering
,
Topology
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