Question on direct spars solver (DSS)

[Sören_Plönnigs]

In the documentation I found out that the solver supports LU and LLT factorization. How can I switch between LU and LLT?

regards,

Soeren

[Alexander_K_Intel2]

Hi Soeren,

If matrix you provide to PARDISO is symmetric positive define then PARDISO factorise it on LL^T, in other case on LDL^T or LU.

With best regards,

Alexander Kalinkin

[Sören_Plönnigs]

And the same applies to DSS?

[Alexander_K_Intel2 · Accepted solution]

Yes, the same situation exist in DSS interface

With best regards,

Alexander Kalinkin

[Sören_Plönnigs]

Ok, thanks for the information! :)