Hi there I am trying to solve a quadratic problem with linear constraints using quadprog function. I get the solution but it's just too slow .it takes about 10min to get the problem solved. the problem consists of 1000 (one thousand variables) and the hessian matrix is a sparse matrix thus I guess the problem should be solved much faster. is it possible to make it faster by changing the options.I tried suitching on the LargeScale option,but nothing changed. does anyone have any idea? thanx a lot in advance.