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T. Hoefler, A. Lumsdaine and W. Rehm:
| | Implementation and Performance Analysis of Non-Blocking Collective Operations for MPI
(In Proceedings of the 2007 International Conference on High Performance Computing, Networking, Storage and Analysis, SC07, presented in Reno, USA, IEEE Computer Society/ACM, Nov. 2007)
AbstractCollective operations and non-blocking point-to-point operations have always been part of MPI. Although non-blocking
collective operations are an obvious extension to MPI, there
have been no comprehensive studies of this functionality. In
this paper we present LibNBC, a portable high-performance
library for implementing non-blocking collective MPI communication operations. LibNBC provides non-blocking versions of all MPI collective operations, is layered on top of
MPI-1, and is portable to nearly all parallel architectures.
To measure the performance characteristics of our implementation, we also present a microbenchmark for measuring
both latency and overlap of computation and communication. Experimental results demonstrate that the blocking
performance of the collective operations in our library is
comparable to that of collective operations in other high-performance MPI implementations. Our library introduces
a very low overhead between the application and the underlying MPI and thus, in conjunction with the potential to
overlap communication with computation, offers the potential for optimizing real-world applications.
ACM Stats
Documentsdownload article:  download slides:  | | BibTeX | @inproceedings{hoefler-sc07, author={T. Hoefler and A. Lumsdaine and W. Rehm}, title={{Implementation and Performance Analysis of Non-Blocking Collective Operations for MPI}}, year={2007}, month={Nov.}, booktitle={Proceedings of the 2007 International Conference on High Performance Computing, Networking, Storage and Analysis, SC07}, location={Reno, USA}, publisher={IEEE Computer Society/ACM}, source={http://www.unixer.de/~htor/publications/}, } |
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