LAPACK

About LAPACK.

The Linear Algebra PACKage (LAPACK) library is included in the Intel MKL library, but it has also been downloaded from NETLIB and installed on Stallo.

LAPACK is written in Fortran77 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision.

To learn more about LAPACK, pleas consult the Intel MKL section, the LAPACK User's Guide and the LAPACK home page at NETLIB.

Using LAPACK on Stallo:

First of all: as stated above, LAPACK is part of the Intel MKL library which usually should give you a better performance than the NETLIB version. Please consult the Intel MKL section about using LAPACK with MKL.

The NETLIB version of LAPACK is installed under /global/apps/netlib/lib/:

/global/apps/netlib/lib/liblapack.a

To be able to use the NETLIB version of LAPACK you must load the NETLIB module on Stallo:

module load netlib

You must run this command before you try to link you application with this library.
And you may have to add this command after the PBS-stuff and before the executable stuff in your job script.