I want use EIGS function compiled by C-MEX

Question

seokwoo 2011-5-2

my matrix is too big.

EIGS : fuction to find eigenvector

I want to call EIGS more faster. matlab interpreter is weak at iteration ("for" loop). I know that C-MEX is faster than matlab language.

If I code EIGS by C-MEX, It would be faster than EIGS of matlab? or if I call EIGS, does it already be compiled?? so no interpreter?

question) 1) I want to find eigenvector very fast. ( my matrix is too big) how I do that?

2) is there any library coded by C-MEX that find eigenvector???

plz help me I'll appreciate it

Answer 1

Titus Edelhofer 2011-5-2

Hi,

eigs already uses Arpack library functions for computing. Therefore: no, coding as a C-MEX function would not make it faster.

Titus