Power Consumption of Mixed Precision in the Iterative Solution of Sparse Linear Systems

Hartwig Anzt, Vincent Heuveline, Bjorn Rocker, Maribel Castillo, Juan C. Fern´ndez, Rafael Mayo, Enrique S. Quintana-Orti
2011 2011 IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum  
This paper presents a detailed analysis of a mixed precision iterative refinement solver applied to a linear system obtained from the 2D discretization of a fluid flow problem. The total execution time and energy need of different softand hardware-implementations are measured and compared with those of a plain GMRES-based solver in double precision. The time and energy consumption of individual parts of the algorithm are monitored as well, enabling a deeper insight and the possibility of
more » ... ing the energy consumption of the code on a general-purpose multi-core architecture and systems accelerated by a graphics processor.
doi:10.1109/ipdps.2011.226 dblp:conf/ipps/AnztHRCFMQ11 fatcat:z4ny7kpujzffnpgrrv3nmwvbvq