topic Pardiso error in Intel® oneAPI Math Kernel Library

Pardiso error

velvia — Wed, 02 Sep 2015 13:59:57 GMT

Hi,

I am using Pardiso, from the MKL that ships with icpc 16.0.0 on Mac OSX.

I have already computed a LU factorization, and I want to use Pardiso as an iterative solver using the previous LU factorization as a preconditionner. For that, I've set iparm[3] = 21 for 2 digits of accuracy. But pardiso_64 returns an error -4 and iparm[19] contains -18.

I don't understand what's going on as the last digit of iparm[19] should be either 1, 2, 3, 4 or 5 according to the MKL documentation : https://software.intel.com/en-us/node/521691

It looks like the issue.

Gennady_F_Intel — Wed, 02 Sep 2015 15:29:00 GMT

It looks like the issue. Could you give us the example to check the problem on our side?

The error code says you have

Sheng_L_ — Mon, 07 Sep 2015 09:08:14 GMT

The error code says you have zero pivot, I changed element[2] = -1 to 1, it runs ok.

Hi,

Anton_A_Intel — Tue, 08 Sep 2015 11:28:36 GMT

Hi,

In spite of Pardiso returns error=-4 and iparm[19]=-18 the solution is correct for new matrix with element[0] = 2.1 Could you check this behavior on larger matrix on your side or sent it to us also? It seem that only error output is incorrect in such way of pardiso using.

Best regards, Anton