Intel Compilers

Intel provides their own compiler suite which is popular in HPC settings. This suite contains compilers for C (icc), C++ (icpc) and Fortran (ifc).

Previously this suite was licensed, but nowadays Intel provides it for free as a part of their oneAPI-program. This change has had an effect on many module names.

In Triton we have various versions of the Intel compiler suite installed, but only some of them are actively supported.

Basic usage

Choosing a GCC for Intel compilers

Intel uses many tools from the GCC suite and thus it is recommended to load a gcc-module with it:

module load gcc/8.4.0 intel-oneapi-compilers/2021.4.0

See GCC page for more information on available GCC compilers.

Hello world in C

Let’s consider the following Hello world-program (hello.c) written in C.

#include <stdio.h>
int main()
{
   printf("Hello world.\n");
   return 0;
}

After downloading it to a folder, we can compile it with Intel C compiler (icc).

First, let’s load up Intel compilers and a GCC module that icc will use in the background:

module load gcc/8.4.0 intel-oneapi-compilers/2021.4.0

Now let’s compile the code:

icc -o hello hello.c

Now we can run the program:

./hello

This outputs the expected Hello world-string.

Current installations

There are various Intel compiler versions installed as modules.

Intel compiler version	Module
2021.2.0	intel-oneapi-compilers/2021.2.0
2021.3.0	intel-oneapi-compilers/2021.3.0
2021.4.0	intel-oneapi-compilers/2021.4.0

If you need a different version of these compilers, please send a request through the issue tracker.

Old installations

These installations will work, but they are not actively updated.

Intel compiler version	Module
2019.3 with Intel MPI	intel-parallel-studio/cluster.2019.3-intelmpi
2019.3	intel-parallel-studio/cluster.2019.3
2020.0 with Intel MPI	intel-parallel-studio/cluster.2020.0-intelmpi
2020.0	intel-parallel-studio/cluster.2020.0

Other old installations are not recommended.