topic Hi Robert, in Intel® oneAPI Math Kernel Library

Which LAPACK version is used in MKL?

Robert_E_ — Mon, 09 Dec 2019 15:20:13 GMT

Hello,

I couldn't find any information on what LAPACK version is used with the current MKL version (2019 update 5).

In Matlab R2019a for example, I can see with the command "version('-lapack')" that MKL version 2018.0.3 with LAPACK 3.7.0 is used.

Is there a way to find out or look up the LAPACK version in the current and previous builds of MKL?

Hi Robert,

Aaron_J_Intel2 — Mon, 09 Dec 2019 17:28:32 GMT

Hi Robert,

Does utility function ilaver return what you are looking for? https://software.intel.com/en-us/onemkl-developer-reference-c-ilaver

Aaron

Hello Robert,

Aaron_J_Intel2 — Mon, 09 Dec 2019 18:46:02 GMT

Hello Robert,

Actually, ilaver in MKL 2019 update 5 incorrectly returns 3.7.0, it is LAPACK 3.8.0.

Aaron

Robert, could you look at MKL

Gennady_F_Intel — Tue, 10 Dec 2019 02:59:45 GMT

Robert, could you look at MKL 2019 Release Notes - https://software.intel.com/en-us/articles/intel-math-kernel-library-release-notes-and-new-features

LAPACK:

Aligned MKL LAPACK functionality with Netlib LAPACK 3.7.1 and 3.8.0:Added routines for symmetric indefinite matrix factorization using a 2-stage Aasen’s algorithm.

yes, the current version of

Gennady_F_Intel — Tue, 10 Dec 2019 03:22:42 GMT

yes, the current version of mkl ( 2019 u5) returns the wrong version of lapack, namely - 3.7.0. The issue is escalated and will keep this thread updated as soon as the problem will be fixed.

The problem has been fixed in

Gennady_F_Intel — Thu, 02 Apr 2020 02:41:51 GMT

The problem has been fixed in MKL v.2020.1 which is available for download.

here is the ilaev output

> test.exe
Major version: 2020
Minor version: 0
Update version: 1
Product status: Product
Build: 20200208
Platform: Intel(R) 64 architecture
Processor optimization: Intel(R) Advanced Vector Extensions 2 (Intel(R) AVX2) enabled processors
================================================================

LAPACK Version == 3, 8, 0