Migrating a Library for Linear Algebra Operations (SCALAPACK)

Table 1 describes the mapping between alternative interfaces and Fortran interfaces of MKL_SCALAPACK. Only optimized interfaces are provided.

**Table 1** Replacement mapping of SCALAPACK
MKL Interface	KML Interface	Data Type	Description
p?getrf	p?getrf	s, d, c, z	Computes the LU factorization of matrix A, allowing partial pivoting.
p?potrf	p?potrf	s, d, c, z	Computes the Cholesky decomposition of a symmetric positive definite matrix or Hermitian positive definite matrix.
p?geqrf	p?geqrf	s, d, c, z	Computes the QR factorization of a matrix, that is, .
p?gels	p?gels	s, d, c, z	Solves an overdetermined or underdetermined real linear system involving full-rank matrix A or its transpose by using QR factorization or LQ factorization of matrix A.

MKL_SCALAPACK provides the Fortran and SCALAPACK (encapsulated in the C language) interfaces. The Fortran interfaces provided by KML_SCALAPACK are the same as those provided by MKL. When the C language is used, replace the header file #include "mkl.h" with #include "kscalapack.h".

The Fortran interfaces are the same as those of MKL. The code does not need to be modified.