topic matrix pivots from pardiso in Intel® oneAPI Math Kernel Library

matrix pivots from pardiso

pierangelo_f_ — Tue, 16 Feb 2010 08:11:00 GMT

How can I get from PARDISO the max/min (or all) pivots after the factorisation of the matrix?

It's possible or not?

Thanks

matrix pivots from pardiso

Gennady_F_Intel — Tue, 16 Feb 2010 14:10:00 GMT

There are no such opportunity in the current version. For spd matrixes (mtype==2,4), when iparm(30), then if the solver detects a zero or negative pivot for these matrix types, the factorization is stopped, PARDISO returns immediately with an error (error = -4) and iparm(30) contains the number of the equation where the first zero or negative pivot is detected.

--Gennady

This question is about 5

Paweł_J_ — Fri, 22 May 2015 11:59:09 GMT

This question is about 5 years old, so maybe there where some changes and getting from PARDISO all zero pivots after factorization phase is now possible?

I'm aware of iparm(30) for matrices (mtype==2,4), what about matrix (mtype=-2) ?

thx in advance

Pawel J.