Intel Compilers

Intel C, C++, and Fortran Compilers

Version(s): 2021.2.0, 16, 15

Intel Compilers requires an environment module

In order to use Intel Compilers, you must first load the appropriate environment module:

module load intel

The HPC provides the Intel C/C++ and Fortran compilers. These are the compilers that most applications use.

Supported languages#

Below are the compiler commands for C, C++, and Fortran:

# C compiler
$ icc

# C++ compiler
$ icpc

# Fortran compiler
$ ifort

Intel compiler tips#

To generate highly optimized code, compile using the -03 or -fast flags
Supply the -w flag to disable all warnings; use the -Wall flag to enable all warnings
Supply the openmp flag to generate code based on OpenMP directives.

Alternative versions#

The HPC provides multiple versions of the Intel compilers via environment modules. To see the versions of the Intel compiler that are available, run the following:

1	`$ module avail intel`

To load an alternative version of the compiler, run the following:

1	`$ module load intel/16`

Debugging#

The Intel compilers include a debugger:

1	`$ gdb-ia`

More Information#

For a quick reference of how to use the Intel compilers, add the --help flag to any command:

1 2	`$ icc --help $ ifort --help`

More detailed information is available on the compilers' manual pages. To access these pages, use the man command:

1 2	`$ man icpc $ man ifort`

For a comprehensive guide to using the Intel compilers, refer to the official documentation.