Attention

WARNING: From 8am on 30th June until 5pm on 4th July 2025, there will be no access to the Stanage HPC cluster.

We will try to minimise this downtime and it is possible that Stanage will return to service before 4th July. We will notify you by email when Stanage is back online and available for job submission.

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.

Usage

The GSL library can be loaded by running one of:

module load GSL/2.6-GCC-8.3.0
module load GSL/2.5-GCC-8.2.0-2.31.1

which will also load a particular GCC, or:

module load GSL/2.5-iccifort-2019.1.144-GCC-8.2.0-2.31.1

if you also want to activate or have already activated icc/icpc/ifort 2019.1.

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) = -1.775967713143382642e-01

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