Seminars & Events

Mathematics and Computer Science Division
"Design and evaluation of multiple level file write-back and prefetching for Blue Gene/P"

DATE: November 3, 2009
TIME: 10:30 AM - 11:30 AM
SPEAKER: Florin Isaila, Assistant Professor at the University Carlos III of Madrid
LOCATION: Building 240, Conference Room 1406 and 1407, Argonne National Laboratory
HOST: Rob Latham

Description:
This talk presents the design and implementation of an asynchronous data-staging strategy for
file accesses based on ROMIO, the most popular MPI-IO distribution, and ZOID, the I/O forwarding component
of ZeptoOS, an open source operating system solution for Blue Gene systems. We describe and evaluate
a two-level file write-back and prefetching solution. The experimental results demonstrate that our
approach achieves high performance through a high degree of overlap between computation, communication,
and file I/O.

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