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GPU-Accelerated MapReduce-Based Self-Organizing Maps Please note that this project has been superseded by https://github.com/peterwittek/somoclu Example usage with two GPUs: mpirun -np 2 ./mrsom data/rgbs.txt data/rgbs The input is a plain-text dense matrix, where the rows correspond to the instances. You will need CUDA, MPI, and MR-MPI to compile the code. MR-MPI is available at: http://www.sandia.gov/~sjplimp/download.html The code was derived from the MR-MPI SOM implementation by Seung-Jin Sul: https://github.com/andreyto/mr-mpi-som The GPU setting method for a distributed system is based on GPMR by Jeff Stuart: http://code.google.com/p/gpmr/ If you use this code, please cite: Wittek, P., Darányi, S.: A GPU-Accelerated Algorithm for Self-Organizing Maps in a Distributed Environment. Proceedings of ESANN-12, 20th European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning. Bruges, Belgium. April, 2012.