%0 Conference Proceedings %B IPDPS 2012, the 26th IEEE International Parallel and Distributed Processing Symposium %D 2012 %T Hierarchical QR Factorization Algorithms for Multi-Core Cluster Systems %A Jack Dongarra %A Mathieu Faverge %A Thomas Herault %A Julien Langou %A Yves Robert %B IPDPS 2012, the 26th IEEE International Parallel and Distributed Processing Symposium %I IEEE Computer Society Press %C Shanghai, China %8 2012-05 %G eng