Matrix A and B, sparse or dense, parallel or sequential?
> On Jun 22, 2016, at 3:27 PM, ehsan sadrfaridpour <[email protected]> wrote: > > Hi, > I need the diagonal elements from result of multiplying matrix A, B together. > I can get by multiplying the 2 matrices and then call MatGetDiagonal. > However, I only need the values on the diagonal and the rest of the elements > are useless for me. > As the size of matrices increase, I am afraid it affect the performance. > > So, I am looking for another method that only calculates the diagonal of > multiplication and not the rest of elements. > If there is not such a method for matrix, how can I use the vector's > operations to reach the same results? > > > Best, > Ehsan
