The documents distributed by this server have been provided by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a noncommercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Publications of SPCL
|T. Hoefler, P. Kambadur, R. L. Graham, G. Shipman, A. Lumsdaine:|
|A Case for Standard Non-Blocking Collective Operations|
(. Vol 4757, Nr. , In Recent Advances in Parallel Virtual Machine and Message Passing Interface, EuroPVM/MPI 2007, presented in Paris, France, pages 125-134, Springer, ISSN: 0302-9743, ISBN: 978-3-540-75415-2, Oct. 2007)
AbstractAbstract. In this paper we make the case for adding standard non-blocking collective operations to the MPI standard. The non-blocking point-to-point and blocking collective operations currently defined by MPI provide important performance and abstraction benefits. To allow these benefits to be simultaneously realized, we present an application programming interface for non-blocking collective operations in MPI. Microbenchmark and application-based performance results demonstrate that non-blocking collective operations offer not only improved convenience, but improved performance as well, when compared to manual use of threads with blocking collectives.