topic Can I define the matrix-vector multiplication in PARDISO ? in Intel® oneAPI Math Kernel Library

Can I define the matrix-vector multiplication in PARDISO ?

anfangde — Sun, 09 Nov 2008 14:57:18 GMT

Hi, All,

As we know, the key to any iterative solver, e.g. GMRES, CGS, is the matrix-vector multiplication. So, I guess one of the main operation of Pardiso is to compute the matrix-vector multiplication. However, for some reason, I can not get teh explict form of the matrix to be solved, and I want to compute the matrix-vector multiplication out of the Pardiso. Therefore, I wonder whether Pardiso support this ?

Thank you !

Re: Can I define the matrix-vector multiplication in PARDISO ?

Sergey_K_Intel1 — Fri, 14 Nov 2008 00:51:38 GMT

PARDISO as many other sparse direct solvers doesn't use the matrix-vector multiplication for solving linear systems. The matrix-vector-multiplication can be only used for iterative refinement.A sparse representation in the compressed sparse row format is necessary to solve linear system with the help of PARDISO.

All the best

Sergey