Dan Okonkwo

• 2 票

  1 回答

  301 浏览

  Differentiating through an eigendecomposition with near-degenerate eigenvalues

  The standard backward rule for a symmetric eigendecomposition has in it, which is fine right up until two eigenvalues approach each other. In our case they approach each other exactly where the…

  • automatic-differentiation
  • numerics

  Dan Okonkwo

• 2 票

  1 回答

  228 浏览

  Is a cache-oblivious stencil still worth it on current memory hierarchies?

  The classic results are from machines with a very different ratio of bandwidth to compute. On our current nodes a straightforwardly blocked stencil with tuned tile sizes is beating our…

  • hpc
  • numerics

  Dan Okonkwo

✳每一道问题，都是一次共同思考的邀请。