Parallel GPU Implementation of Iterative PCA Algorithms

  title={Parallel GPU Implementation of Iterative PCA Algorithms},
  author={Mircea Andrecut},
  journal={Journal of computational biology : a journal of computational molecular cell biology},
  volume={16 11},
  • M. Andrecut
  • Published 7 November 2008
  • Computer Science
  • Journal of computational biology : a journal of computational molecular cell biology
Principal component analysis (PCA) is a key statistical technique for multivariate data analysis. [] Key Method Here we present an algorithm based on Gram-Schmidt orthogonalization (called GS-PCA), which eliminates this shortcoming of NIPALS-PCA. Also, we discuss the GPU (Graphics Processing Unit) parallel implementation of both NIPALS-PCA and GS-PCA algorithms. The numerical results show that the GPU parallel optimized versions, based on CUBLAS (NVIDIA), are substantially faster (up to 12 times) than the…

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