Cart (Loading....) | Create Account
Close category search window

Automatic Realignment of Data Structures to Improve MPI Performance

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Perry, B. ; Univ. of Delaware, Newark, DE, USA ; Swany, M.

Programs that use the Message Passing Interface (MPI) standard to communicate with other processes often use MPI data structures that are modeled after native data structures. In some cases, a subset of the fields in the native data structure do not need to be transmitted. Users will sometimes explicitly omit those fields in the MPI data structure but align the MPI data structure to match the logical layout of the native data structure, leaving gaps in alignment for the missing fields. Because the data is non-contiguous, time is spent analyzing where the data needs to be placed rather than simply sending the received data into an appropriate buffer byte for byte upon data packing. We present a compile-time transformation that recognizes this scenario within Single Program Multiple Data programs; our transformation reorders the fields of the native data structure by placing the non-transmitted fields after the transmitted fields and adjusting the user's logical layout of the MPI data structure accordingly. This transformation makes the transmitted data contiguous, which eliminates both the need to copy data during packing and the need to carefully analyze where to place the data once it has been transmitted. This transformation significantly improves data packing in many performance environments.

Published in:

Networks (ICN), 2010 Ninth International Conference on

Date of Conference:

11-16 April 2010

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.