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Questions tagged [matrix-free]

For questions about matrix-free methods, which only require computing matrix-vector products, rather than storing the whole matrix explicitly.

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8 votes
2 answers

Matrix free finite elements method for visualization in process tomography

I am Computer Scientist and now I am interested in matrix multiplication on GPUs. My research are focused on matrix free finite elements method where I multiply sparse matrix. Sparse matrix could ...
Konrad's user avatar
  • 95
9 votes
2 answers

Applying matrix square root inverse in matrix-free regime

Let $A$ be a large symmetric positive definite matrix, and suppose that we can efficiently apply $A$ and have a fast solver to apply $A^{-1}$, but we do not have access to the matrix entries for ...
Nick Alger's user avatar
  • 3,143