External function

Dynare help (legacy posts)
1

Dear Experts

In my model, the transitional path of one variable is determined by exogenous growth of technology. I wrote a external function to determine the dynamic of this variable, and allow the model block of Dynare to call this function. However, with this approach, it takes very long time for Dynare to solve the model.
To save time, I was wondering if it is possible to do the following. First, solve the dynamic of this variable in matlab and save the transitional path. Then, ask Dynare to load the resulted data. If this can’t be done, is there any other way to speed it up?

Appreciate your help!

xuduan

2

Do you provide the numerical derivatives of your function to Dynare?

If not, then it will probably speed up the computation and increase its accuracy if you do.