On the cluster, the GNU Scientific Library (GSL) version 2.6 is installed.
The GNU Scientific Library is a collection of functions, written in C, for the purpose of numerical calculations (e.g routines for linear algebra and fast Fourier transforms). The complete documentation and feature list can be found here.
You can load the GSL with the following command:
module load gsl
Note that due to the module structure of OpenHPC, the GSL module may not be always visible with
module avail. It is only visible, when a compiler module is loaded. By default, the compiler module
gnu9 (GCC 9.3.0) is always loaded, however you might have unloaded it intentionally or accidentally. In that case, you can show details with
module spider gsl.
The GSL installation is available in multiple variants, depending on which compiler you want to use. You can list the variants with the following command:
$ module spider gsl (...) Description: GNU Scientific Library (GSL) You will need to load all module(s) on any one of the lines below before the "gsl/2.6" module is available to load. gnu9/9.3.0 intel/188.8.131.52010_cm9.0_6a80743563 intel/19.0.5_2019 intel/184.108.40.206006_cm9.0_ae8d786e90
If you want to compile a program that uses the GSL, you can reference the corresponding environment variables. GSL will set at least the following variables:
GSL_DIR: GSL installation directory
GSL_LIB: GSL library directory
GSL_INC: GSL include directory
Additionally, variables like
LD_LIBRAY_PATH are modified. You can display a complete list of changes made during load with
module show gsl.
Caution: The GSL uses dynamically loaded libraries (shared objects). This means that the
gsl module needs to be loaded during execution time of your program as well (or at least the GSL library directory needs to be in your