Table des matières
Jean Zay: The ARPACK and PARPACK libraries
Introduction
ARPACK (ARnoldi PACKage) is a library of Fortran77 subroutines for researching the eigenvalues and eigenvectors of large sparse matrices. The library is based on the iterative algorithms of Lanczos/Arnoldi.
PARPACK (Parallel ARnoldi PACKage) is a parallel version of the ARPACK library.
ARPACK and PARPACK are available in the ARPACK-NG package.
Installed versions
- arpack-ng 3.7.0 with the gcc-8.2.0-mpi compiler
- arpack-ng 3.7.0 with the gcc-9.1.0-mpi compiler
- arpack-ng 3.7.0 with the intel-19.0.4-mpi compiler
Usage
You may access the different versions by using the module command. To use the default version, enter the following:
$ module load arpack-ng/3.7.0/intel-19.0.4-mpi
Linking
At the compilation, it is necessary to add '-larpack' to use the sequential version or '-lparpack -larpack' for the parallel version:
$ mpiifort appel_arpack.f90 -larpack
or
$ mpiifort appel_parpack.f90 -lparpack -larpack