Sparse Coefficient Matrix Optimization #240

Hello guys,

It is very pleasant to see such an almost perfect and standard package to solve ode. May I ask about a question concerning the stiff system? Does the stiff system support such a big coefficient matrix odes?

, in which M is an especially sparse matrix bigger than 1000*1000. This may be better handled by adjacency linked list in the core of computation. If relevant optimization has been done, are there any materials introducing how to input the adjacency linked list or sparse matrix.

Thanks in advance for any reply.
Wenyin