Compact-routine forms of dgbtrf and dgbtrs for vectorizing LU decomp and solver

[John_Michalakes]

We see there are a number of vectorized compact routines in the Intel MKL library:

https://software.intel.com/en-us/articles/intelr-math-kernel-library-introducing-vectorized-compact-routines

We are developing an implicit vertical solver for a new weather model and would like to employ compact routine versions of the dgbtr that vectorize over multiple LU decomposition on adjacent vertical columns of the domain; and a compact version of dgbtrs for vectorizing solving the resulting LUx=b problem on adjacent columns.  Are there plans to develop compact versions of dgbtrf and dgbtrs available, please?

John Michalakes, UCAR

[Gennady_F_Intel]

The nearest version of MKL which we are planning to release the next month is MKL 2020 and this version will not contain such routines. You could submit the Feature request to the Intel Online Service Center.

[Ruqiu_C_Intel]

Dear John Michalakes,

Thanks for your question!

LU factorization using full and band storage of matrices currently. While you can open a support ticket on online service center at https://supporttickets.intel.com/ to complete the request.

Best Regards,

Ruqiu

[Gennady_F_Intel]

MKL Dev Team decided to postpone this feature implementation into the next version of MKL. We apologize for such decisions.