TMP. STMicroelectronics PGI

Below you will find brief information for PGI. Parallel Fortran, C and C++ compilers are designed for scientists and engineers. The guide provides details on optimizing and parallelizing code, using directives and pragmas, and more.

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Using Environment Modules on Linux

TMP

You can use

TMP

to specify the directory to use for placement of any temporary files created during execution of the PGI compilers and tools. This variable is interchangeable with

TMPDIR

You can use

TMPDIR

to specify the directory to use for placement of any temporary files created during execution of the PGI compilers and tools.

Using Environment Modules on Linux

On Linux, if you use the Environment Modules package, that is, the module load

command, PGI includes a script to set up the appropriate module files.

Assuming your installation base directory is

/opt/pgi

, and your

MODULEPATH

environment variable is

/ usr/local/Modules/modulefiles

, execute this command:

% /opt/pgi/linux86/10.0-0/etc/modulefiles/pgi.module.install \

-all -install /usr/local/Modules/modulefiles

This command creates module files for all installed versions of the PGI compilers. You must have write permission to the modulefiles

directory to enable the module commands:

% module load pgi32/10.0

% module load pgi64/10.0

% module load pgi/10.0

where "pgi/10.0" uses the 32-bit compilers on a 32-bit system and uses 64-bit compilers on a 64-bit system.

To see what versions are available, use this command:

% module avail pgi

The module load

command sets or modifies the environment variables as indicated in the following table.

This Environment Variable... Is set or modified by the module load command to ...

CPP

Full path to pgcc

Full path to pgCC

CXX

C++

F77

F90

LD_LIBRARY_PATH

MANPATH

PATH

Path to pgCC

Full path to pgf95

Full path to pgf77

Full path to pgf90

Prepends the PGI library directory

Prepends the PGI man page directory

Prepends the PGI compiler and tools bin

Stack Traceback and JIT Debugging

When a programming error results in a run-time error message or an application exception, a program will usually exit, perhaps with an error message. The PGI run-time library includes a mechanism to override this default action and instead print a stack traceback, start a debugger, or, on Linux, create a core file for postmortem debugging.

The stack traceback and just-in-time debugging functionality is controlled by an environment variable,

PGI_TERM

, described in “PGI_TERM,” on page 139

. The run-time libraries use the value of

PGI_TERM

to determine what action to take when a program abnormally terminates.

When the PGI runtime library detects an error or catches a signal, it calls the routine pgi_stop_here() prior to generating a stack traceback or starting the debugger. The pgi_stop_here()

routine is a convenient spot to set a breakpoint when debugging a program.

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