Hi all:

I am trying optimize my code. I use the gprof to measure function call time consuming. The most consuming part is

Eigen::Matrix<double, -1, -1, 0, -1, -1>& Eigen::DenseBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >::lazyAssign<Eigen::Matrix<double, -1, -1, 0, -1, -1> >(Eigen::DenseBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&)

I don't understand what does this mean. Could anyone explain to me? Thank you.

Best.

This corresponds to a matrix to matrix assignment, like:

MatrixXd A, B;
A = B;

Thanks.

Hi,

I'm running into the same question with you, how do you optimize the assignment ?

Thanks.

I use some global variables instead.