@inproceedings {icl:687, title = {Hierarchical QR Factorization Algorithms for Multi-Core Cluster Systems}, journal = {IPDPS 2012, the 26th IEEE International Parallel and Distributed Processing Symposium}, year = {2012}, month = {2012-05}, publisher = {IEEE Computer Society Press}, address = {Shanghai, China}, author = {Jack Dongarra and Mathieu Faverge and Thomas Herault and Julien Langou and Yves Robert} }