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The effective I/O bandwidth benchmark (b{_}eff{_}io) [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2000.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
1.1 Megabytes pages : digital, PDF file
Additional Creators:
Lawrence Livermore National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The effective I/O bandwidth benchmark (b{_}eff{_}io) covers two goals: (1) to achieve a characteristic average number for the I/O bandwidth achievable with parallel MPI-I/O applications, and (2) to get detailed information about several access patterns and buffer lengths. The benchmark examines ''first write'', ''rewrite'' and ''read'' access, strided (individual and shared pointers) and segmented collective patterns on one file per application and non-collective access to one file per process. The number of parallel accessing processes is also varied and wellformed I/O is compared with non-wellformed. On systems, meeting the rule that the total memory can be written to disk in 10 minutes, the benchmark should not need more than 15 minutes for a first pass of all patterns. The benchmark is designed analogously to the effective bandwidth benchmark for message passing (b{_}eff) that characterizes the message passing capabilities of a system in a few minutes. First results of the b{_}elf{_}io benchmark are given for IBM SP and Cray T3E systems and compared with existing benchmarks based on parallel Posix-I/O.
Report Numbers:
E 1.99:ucrl-jc-137704
E 1.99: dp0101038
dp0101038
ucrl-jc-137704
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
02/17/2000.
"ucrl-jc-137704"
" dp0101038"
"DP0101038"
MPID2000-Message Passage Interface and High-Performance Clusters Developer, Conference location not supplied, Conference dates not supplied.
Koniges, A E; Rabehseifner, R.
Funding Information:
W-7405-ENG-48
View MARC record | catkey: 14347705