GSL

The GNU Scientific Library (GSL) is a collection of routines for numerical computing. The routines have been written from scratch in C. See here for the types of routines that the GSL provides.

Note

Currently, we only have builds which are compatible with our CPU nodes.

Usage

The GSL library can be loaded by running one of:

module load GSL/2.5-GCC-7.3.0-2.30
module load GSL/2.6-GCC-9.3.0
module load GSL/2.6-GCC-10.2.0
module load GSL/2.7-GCC-10.3.0
module load GSL/2.7-GCC-11.2.0
module load GSL/2.7-GCC-11.3.0
module load GSL/2.7-GCC-12.2.0

which will also load a particular GCC, or:

module load GSL/2.6-iccifort-2020.1.217

if you also want to activate or have already activated icc/icpc/ifort 2020.1.217.

Example

A example program that uses the GSL (taken from the GSL documentation):

#include <stdio.h>
#include <stdlib.h>
#include <gsl/gsl_sf_bessel.h>

int main (void) {
  double x = 5.0;
  double y = gsl_sf_bessel_J0(x);

  printf("J0(%g) = %.18e\n", x, y);

  return EXIT_SUCCESS;
}

Build this using:

gcc -Wall -lgsl -lgslcblas -o test test.c  # OR
icc -Wall -lgsl -lgslcblas -o test test.c

Then run using:

./test

which should print the following (correct to double-precision accuracy):

J0(5) = -1.775967713143383198e-01

NB generally, you may not need to compile using -lgslcblas depending on which GSL routines you are using.

Installation notes

Installation method

This section is primarily for administrators of the system. GSL has been installed using the default Easybuild config files.

Build logs and test reports can be found in $EBDEVELGSL with a given module loaded.

Testing method

Testing has been conducted using the above example.