[Boost-users] Using sparse matrix

Hello, I have just started using Boost libraries, and I have 2 questions regarding use of sparse matrix: 1. The matrix should be large (about 3000 * 1500), and I need to make the insertion very efficient. When I use the regular insert function, it seems to work very slow. Is there a better way to insert objects into the sparse matrix? 2. I want to know if there is an efficient way to multiply the matrix with a vector. Regards, Golan.