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Publications of SPCL

T. Hoefler, M. Mosch, T. Mehlan, W. Rehm:

 CollGM - A Myrinet/GM optimized collective component for Open MPI

(In Proceedings of 3rd KiCC Workshop 2007, presented in Aachen, Germany, RWTH Aachen, Dec. 2007)


The Open MPI collective framework offers a way to implement hardware-specific collective operations for Open MPI. We used this framework to develop a Myrinet/GM collective component by combining common knowledge of the implementation of collective algorithms with GM protocol optimized techniques to achieve highest performance. Our results show that the good performance of the existing point-to-point based tuned collective implementation in Open MPI can be improved with the use of these techniques.


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  author={Torsten Hoefler and M. Mosch and Torsten Mehlan and Wolfgang Rehm},
  title={{CollGM - A Myrinet/GM optimized collective component for Open MPI}},
  booktitle={Proceedings of 3rd KiCC Workshop 2007},
  location={Aachen, Germany},
  publisher={RWTH Aachen},