[petsc-users] Intel MKL

[Jed Brown]

Randall Mackie <rlmackie862 at gmail.com> writes:

> Dear PETSc team:
>
> On upgrading to version 3.8, we have discovered an inconsistency in the python configuration scripts for using Intel MKL for BLAS/LAPACK.
> It seems that these options were changed between 3.7 and 3.8:
>
>
> Version 3.8:
> --with-blaslapack-lib=libsunperf.a
> --with-blas-lib=libblas.a --with-lapack-lib=liblapack.a
> --with-blaslapack-dir=/soft/com/packages/intel/13/079/mkl
>
> Version 3.7:
> --with-blas-lapack-lib=libsunperf.a
> --with-blas-lib=libblas.a --with-lapack-lib=liblapack.a
> --with-blas-lapack-dir=/soft/com/packages/intel/13/079/mkl
>
> So a hyphen was inserted with the lib and dir options.
>
> However, we found that at least in the mkl_pardiso.py script it still looks for a hyphen, but in other scripts we checked it doesn’t (although we did not do an exhaustive search).

Does it actually "look for a hyphen" or is it just the error message:

    raise RuntimeError('MKL_CPardiso requires Intel MKL. Please rerun configure using --with-blas-lapack-dir=LOCATION_OF_INTEL_MKL')

Configure is supposed to translate the old convention to the new
convention.  Yes, this error message should also be fixed.

> We know that you are not connected to Intel, but maybe someone from Intel reads these messages, as their web pages that explain how to install Petsc are wrong and conform to the pre-3.8 options:
>
> https://software.intel.com/en-us/articles/enabling-intel-mkl-in-petsc-applications <https://software.intel.com/en-us/articles/enabling-intel-mkl-in-petsc-applications>
>
> https://software.intel.com/en-us/articles/mkl-blas-lapack-with-petsc <https://software.intel.com/en-us/articles/mkl-blas-lapack-with-petsc>
>
>
> Thanks, Randy Mackie