Non quia difficilia sunt non audemus, sed quia non audemus difficilia sunt
Home -> Publications
Home
  Publications
    
all years
    2017
    2016
    2015
    2014
    2013
    2012
    2011
    2010
    2009
    2008
    2007
    2006
    2005
    2004
    theses
    techreports
    presentations
    edited volumes
    conferences
  Awards
  Research
  Teaching
  BLOG
  Miscellaneous
  Full CV [pdf]






  Events








  Past Events





Publications of Torsten Hoefler
Copyright Notice:

The documents distributed by this server have been provided by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a noncommercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.

T. Hoefler, G. Bronevetsky, B. Barrett, B. R. de Supinski and A. Lumsdaine:

 Efficient MPI Support for Advanced Hybrid Programming Models

(Vol LNCS 6305, In Recent Advances in the Message Passing Interface (EuroMPI'10), presented in Stuttgart, Germany, pages 50--61, Springer, ISSN: 0302-9743, ISBN: 078-3-642-15645-8, Sep. 2010)

Abstract

The number of multithreaded Message Passing Interface (MPI) implementations and applications is increasing rapidly. We discuss how multithreaded applications can receive messages of unknown size. As is well known, combining MPI Probe/MPI Recv is not thread-safe, but many assume that trivial workarounds exist. We discuss those workarounds and show how they fail in practice by either limiting the available parallelism unnecessarily, consuming resources in a non-scalable way, or promoting global deadlocks. In this light, we propose two fundamentally different efficient approaches to enable thread-safe messaging in MPI-2.2: fine-grained locking and matching outside of MPI. Our approaches provide thread-safe probe and receive functionality, but both have deficiencies, including performance limitations and programming complexity, that could be avoided if MPI would offer a thread-safe (stateless) interface to MPI Probe. We propose such an extension for the upcoming MPI-3 standard, provide a reference implementation, and demonstrate significant performance benefits.

Documents

download article:
download slides:
 

BibTeX

@inproceedings{hoefler-mprobe,
  author={T. Hoefler and G. Bronevetsky and B. Barrett and B. R. de Supinski and A. Lumsdaine},
  title={{Efficient MPI Support for Advanced Hybrid Programming Models}},
  year={2010},
  month={Sep.},
  pages={50--61},
  volume={LNCS 6305},
  booktitle={Recent Advances in the Message Passing Interface (EuroMPI'10)},
  location={Stuttgart, Germany},
  publisher={Springer},
  issn={0302-9743},
  isbn={078-3-642-15645-8},
  source={http://www.unixer.de/~htor/publications/},
}

serving: 23.20.50.146:55636© Torsten Hoefler