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Publications of Torsten Hoefler
Torsten Hoefler:
| | | Remote Memory Access Programming: Faster Parallel Computing Without Messages
(Presentation - presented in Atlanta, GA, USA, Jun. 2015)
AbstractRemote memory access (RMA) or partitioned global address space
programming offers abstractions to coordinate directly accessible
distributed memory domains. The presentation will start with an analysis
of established technologies (cache-coherence), continue to describe RMA
programming abstractions and example codes, and conclude with proposals
for the future of RMA. In the first part, we will use an intuitive
performance model to briefly demonstrate the complexities of
cache-coherent systems with regards to performance tuning. We will
exemplify these findings with results on Intel's Xeon Phi and Sandy
Bridge CPUs where we speed up communication algorithms by up to 4.3x.
We continue by showing how RMA programming simplifies the design and
tuning and introduce MPI-3's RMA semantics as a particuler example. We
discuss our reference implementation for Cray machines foMPI and
demonstrate results with up to half a million processes. We conclude the
talk by addressing producer-consumer synchronizations in task-based
runtime environments and the new proposal of notified access. Overall,
we advocate RMA as a potential programming model for scalable systems
ranging from single-die multicores to large-scale supercomputers.
Documents
download slides: 
| | | BibTeX | @misc{hoefler-gatech-rma,
author={Torsten Hoefler},
title={{Remote Memory Access Programming: Faster Parallel Computing Without Messages}},
year={2015},
month={Jun.},
location={Atlanta, GA, USA},
source={http://www.unixer.de/~htor/publications/},
} |
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