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A PIPELINED ALGORITHM FOR LARGE, IRREGULAR ALL-GATHER PROBLEMS

delete2010-01-11
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PRE
AI
J
Jesper Larsson Träff *
A
Andreas Ripke
C
Christian H. Siebert
R
Rajeev Thakur
W
William Gropp
DOI:10.1177/1094342009359013delete
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摘要

摘要

En 中文
We describe and evaluate a new pipelined algorithm for large, irregular all-gather problems. In the irregular all-gather problem each process in a set of processes contributes individual data of possibly different size, and all processes have to collect all data from all processes. The pipelined algorithm is useful for the implementation of the MPI_Allgatherv collective operation of the Message-Passing Interface (MPI) for large problems. By conception, the new algorithm is well suited to implementation on clustered multiprocessors, such as symmetric multiprocessing (SMP) clusters. The new algorithm has been implemented within different MPI libraries. Benchmark results on NEC SX-8, Linux clusters with InfiniBand and Gigabit Ethernet, IBM Blue Gene/P, and SiCortex systems show huge performance gains in accordance with the expected behavior.
Keyword:
message-passing interface
collective operations
all-gather problem
pipelining
NEC SX-8
Linux clusters
IBM Blue Gene/P
SiCortex
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期刊

International Journal of High Performance Computing Applications 封面图
International Journal of High Performance Computing Applications
IF:
2.5
论文数:
1.1K
被引数:
1.3K

机构

A
Argonne National Laboratory
学者数:
1.1W
论文数: 9.2K
被引数: 3.8W
U
united states department of energy (doe)
学者数:
11.3W
论文数: 9.6W
被引数: 246
N
nec corporation
学者数:
1.0K
论文数: 956
被引数: 0
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引用论文

引用论文

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PREAI
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