[[PageOutline]]
= C/C++/Fortran Compilers =
GNU and Intel compilers are available on Cypress.

== GNU Compiler ==
The default compiler is GNU compiler, version 4.4.7. To use a newer version, for example, 
{{{
[tulaneID@cypress1 ~]$ module load gcc/4.7.4
}}}
=== Compilation Commands ===
==== C ====
For example. the command below will make an executable from the source code 'hello.c'.
{{{
[tulaneID@cypress1 ~]$ gcc hello.c
}}}
The default executable file name will be 'a.out'. If you want to specify the executable file name,
{{{
[tulaneID@cypress1 ~]$ gcc -o hello hello.c
}}}
Now 'hello' is the executable file name.

There are many option for the compiler command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man gcc
}}}
For example, to set optimization level 3 and optimize for Xeon CPU,
{{{
[tulaneID@cypress1 ~]$ gcc -O3 -mavx -o hello hello.c
}}}

==== C++ ====
For example. the command below will make an executable from the source code 'hello.cpp'.
{{{
[tulaneID@cypress1 ~]$ g++ hello.cpp
}}}
The default executable file name will be 'a.out'.
The basic options are same with 'gcc' command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man g++
}}}

==== Fortran ====
For example. the command below will make an executable from the source code 'hello.f90'.
{{{
[tulaneID@cypress1 ~]$ gfortran hello.f90
}}}
The basic options are same with 'gcc' command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man gfortran
}}}

== Intel Compiler ==
To use Intel Compiler, 
{{{
[tulaneID@cypress1 ~]$ module load intel-psxe
}}}
=== Compilation Commands ===
==== C ====
For example. the command below will make an executable from the source code 'hello.c'.
{{{
[tulaneID@cypress1 ~]$ icc hello.c
}}}
The default executable file name will be 'a.out'. If you want to specify the executable file name,
{{{
[tulaneID@cypress1 ~]$ icc -o hello hello.c
}}}
Now 'hello' is the executable file name.

There are many option for the compiler command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man icc
}}}
For example, to set optimization level 3 and optimize for Xeon CPU,
{{{
[tulaneID@cypress1 ~]$ icc -O3 -xavx -o hello hello.c
}}}

==== C++ ====
For example. the command below will make an executable from the source code 'hello.cpp'.
{{{
[tulaneID@cypress1 ~]$ icpc hello.cpp
}}}
The default executable file name will be 'a.out'.
The basic options are same with 'icc' command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man icpc
}}}

==== Fortran ====
For example. the command below will make an executable from the source code 'hello.f90'.
{{{
[tulaneID@cypress1 ~]$ ifort hello.f90
}}}
The basic options are same with 'icc' command. You can see those by,
{{{
[tulaneID@cypress1 ~]$ man ifort
}}}