@techreport{KRR03, author = {K\"{u}hnemann, M. and Rauber, T. and R\"{u}nger, G.}, title = {{Optimizing MPI Collective Communication by Orthogonal Structures}}, series = {Chemnitzer Informatik-Berichte}, institution = {TU Chemnitz}, number = {CSR--03--03}, year = {2003}, issn = {0947-5125}, }