topic PARDISO and DSS in Intel® oneAPI Math Kernel Library

PARDISO and DSS

Vahid_Jalili — Mon, 04 Oct 2010 20:14:44 GMT

Hi all,

I wanted to compare the LU factorization time done by DSS and PARDISO on a quad core Intel CPU in MS VS 2008. In PARDISO I have set the iparm(2)=3 to use parallel threads, however I am not seeing any acceleration in compare with DSS or even when iparm(2)=0 or 2.

If PARDIOS is faster than DSS? and if DSS is using parallel threads by default?

Thanks.

PARDISO and DSS

ArturGuzik — Tue, 05 Oct 2010 01:05:23 GMT

Vahid,

you won't see any speed up bacause DSS is just a simplier interface to Pardiso. Core is the same.

A.

PARDISO and DSS

Gennady_F_Intel — Tue, 05 Oct 2010 08:02:38 GMT

exactly,DSS is just different, simplified interface which provides the same efficiency of calculations.

--Gennady

PARDISO and DSS

Vahid_Jalili — Tue, 05 Oct 2010 12:48:16 GMT

You mean both DSS and PARDISO are using all 4 cores of the quad core CPU by default? We don't need to set anything for this purpose, right?

Thank you.

PARDISO and DSS

Gennady_F_Intel — Tue, 05 Oct 2010 13:38:13 GMT

It depends of version of MKL you are using. For the latest (10.2 and 10.3) versions that's correct.

--Gennady