7813

OpenCL Floating Point Software on Heterogeneous Architectures – Portable or Not?

Miriam Leeser, Jaideep Ramachandran, Thomas Wahl, Devon Yablonski
Northeastern University, Boston, USA
Workshop on Numerical Software Verification (NSV), 2012

@inproceedings{LRWY12,

   author={Miriam Leeser and Jaideep Ramachandran and Thomas Wahl and Devon Yablonski},

   title={OpenCL} Floating Point Software on Heterogeneous Architectures {—} Portable or Not?},

   booktitle={Workshop on Numerical Software Verification (NSV)},

   url={http://www.ccs.neu.edu/home/wahl/Publications/lrwy12.pdf},

   year={2012},

   category={workshop}

}

Download Download (PDF)   View View   Source Source   

815

views

OpenCL is an emerging platform for parallel computing that promises portability of applications across different architectures. This promise is seriously undermined, however, by the frequent use of floating-point arithmetic in scientific applications. Floating-point computations can yield vastly different results on different architectures – even IEEE 754-compliant ones -, potentially causing changes in control flow and ultimately incorrect (not just imprecise) output for the entire program. In this paper, we illustrate a few instances of non-trivial diverging floating-point computations and thus present a case for rigorous static analysis and verification methods for parallel floating point software running on IEEE-754 2008 compliant hardware. We discuss plans for such methods, with the goal to facilitate the automated prediction of portability issues in floating-point software.
No votes yet.
Please wait...

* * *

* * *

HGPU group © 2010-2017 hgpu.org

All rights belong to the respective authors

Contact us: