Using the PGI Compilers

1. Environment Setup

1.1 tcsh users

The following settings are made by default for all users in the system-wide start up file /etc/csh.cshrc. Users should be aware that modification of any of the listed environment variables via, e.g., settings in ~/.cshrc, may adversely impact functioning of the Intel compiler suite.

PGI environment variable: Must be set to /opt/pgi
PATH environment variable: Must include /opt/pgi/linux86/bin.
MANPATH environment variable: Must include /opt/pgi/man.

1.2 bash users

The following settings are made by default for all users in the system-wide start up file /etc/profile. Users should be aware that modification of any of the listed environment variables via, e.g., settings in ~/.bashrc, may adversely impact functioning of the Intel compiler suite.

PGI environment variable: Must be set to /opt/pgi
PATH environment variable: Must include /opt/pgi/linux86/bin.
MANPATH environment variable: Must include /opt/pgi/man.

2. Available Commands

pgcc: C compiler
pgCC: C++ compiler
pgf77: F77 compiler
pgf90: F90 compiler
pgdbg: PGI (graphical) debugger

Man pages are available for all of the above commands.

3. Sample Usage

Compilation of simple C program
```
head% pgcc pgm.c -o pgm
```
Compilation of simple F77 program
```
head% pgf77 pgm.f -o pgm
```

4. Recommended Flag Settings

All compilers
- Optimization: -fast

5. Web-based Documentation

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