Linear algebra proceduresΒΆ

The linear algebra library used by GetFEM++ is Gmm++ which is now a separate library. Please see the GMM++ user documentation.

Note that GetFEM++ includes (since release 1.7) its own version of SuperLU 3.0 (see SuperLU web site) hence a direct sparse solver is available out of the box. Note that an option of the ./configure file allows to disable the included version of SuperLU in order to use a pre-installed version.

A small interface to MUMPS is also provided (see MUMPS web1 or MUMPS web2). See the file gmm/gmm_MUMPS_interface.h. In order to use MUMPS, you have to indicates some options to the configure shell:

MUMPS_CFLAGS=" -I /path/to/MUMPS/include "
MUMPS_LIBS=" F90 libraries and libs of MUMPS to be linked "

For instance if you want to use the sequential version of MUMPS with double and complex double:

MUMPS_CFLAGS=" -I /path/to/MUMPS/include "
MUMPS_LIBS=" ...F90libs...  -L /path/to/MUMPS/lib -ldmumps -lzmumps -lpord
            -L /path/to/MUMPS/libseq -lmpiseq "

where ...F90libs... are the libraries of the fortran compiler used to compile MUMPS (these are highly dependant on the fortran 90 compiler used, the ./configure script should detect the options relative to the default fortran 90 compiler on your machine and display it – for example, with the intel ifort compiler, it is -L/opt/icc8.0/lib -lifport -lifcoremt -limf -lm -lcxa -lunwind -lpthread)

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