Oak Ridge Leadership Computing Facility

Description

Website: Portland Group (PGI)

Cray provides the PGI compilers as part of several programming environments on Jaguar.

Note that Jaguar has two kinds of nodes:

1 .Compute nodes running the CNL OS. * To build code for the compute nodes, you should use the Cray wrappers cc, CC, and ftn. * The wrappers will call the appropriate PGI compiler which will use the appropriate header files and link against the appropriate libraries. 2. Service and login nodes running Linux. * To build code for the Linux service nodes, you can call the PGI compilers directly. (See list below.) * We strongly suggest that you don’t call the PGI compilers directly if you are building code to run on the compute nodes.

The Cray wrappers cc, CC, and ftn will automatically link against MPI (-lmpi) and SciLib (-lsci). This is not true when calling the PGI compilers directly. See the cc, CC, and ftn man pages for more information on their usage.

To see man pages on PGI compilers with a full list of compiler options, first make sure the “PrgEnv-pgi” module is loaded, and then do a man on any of the following:

• pgcc
• pgCC
• pgf90/pgf95
• pgf77

For more detailed information, see PGI documentation and Cray’s documentation.

To use the Cray wrappers with the PGI compilers, the PrgEnv-pgi module should be loaded:

module avail PrgEnv
module swap PrgEnv-pgi PrgEnv-pgi        # this loads some version of pgi, currently 7.2.3

To just use the PGI compilers directly, just load the pgi module you want:

module avail pgi
module load pgi/7.2.3         # Note that this does not changed the Cray wrappers.

It is possible to use the PGI compiler versions directly without loading the Cray Programming Environments, but note that the Cray wrappers will probably not work as expected if you do that.

Also note that with CNL 2.0.49 and above, the following options are set automatically by the xtpe-quadcore module (loaded by default):

jaguar12> module display xtpe-quadcore
-------------------------------------------------------------------
/opt/xt-asyncpe/1.0/modulefiles/xtpe-quadcore:

prepend-path     PE_PRODUCT_LIST XTPE_QUADCORE
setenv           XTPE_QUADCORE_ENABLED ON
setenv           LIBSCI_PRE_LINK_OPTS  -lsci_quadcore
setenv           PGI_POST_COMPILE_OPTS   -tp barcelona-64
setenv           PATHSCALE_POST_COMPILE_OPTS  -march=barcelona
setenv           GNU_POST_COMPILE_OPTS  -march=barcelona
setenv           LLVM_AMD_10H 1
-------------------------------------------------------------------

However, the “barcelona” option works with many versions of the compiler.

It is best to review the pgcc, pgCC, and pgf90 man pages for a list of their options.

The following options control the amount of debugging information generated by the compiler. They can adversely affect optimization.

For most cases, the usual levels of optimization are appropriate (-O0, -O1, -O2 [default], -O3). Here are a few exceptions.

The following options control how source files are translated into machine code.

The following options control the amount of debugging information generated by the compiler. They can adversely affect optimization.

For most cases, the usual levels of optimization are appropriate (-O0, -O1, -O2 [default], -O3). Here are a few exceptions.

The following information is available by running module help pgi

----------- Module Specific Help for 'pgi/12.8.0' -----------------

PGI 12.8.0
==========

Release Date: September 20, 2012

Purpose:
--------
  Features of PGI 12.8.0 are documented at:

http://www.pgroup.com/doc/pgirn128.pdf

  The following bug is fixed in the PGI 12.8.0 release.
    784151  pgf90 issuing incorrect name conflict error because of wrong scopes

Product and OS Dependencies:
----------------------------
  pgi 12.8.0 is supported on Cray XT and XE systems running CLE 2.2 or
  later operating systems and on Cray XK systems running CLE 4.0.

Documentation:
--------------
  Documentation for PGI 12.8.0 is in /opt/pgi/12.8.0/linux86-64/12.8/doc/
  PGI User's Guide,              pgi12ug.pdf
  PGI Fortran Reference,         pgifortref.pdf
  PGI CUDA Fortran Guide,        pgicudaforug.pdf
  PGI 12.8 Release Notes,        pgirn128.pdf
  PGI 12.8 Installation Guide,   pgiinstall128.pdf

Installation:
-------------
  rpm -ihv pgi-12.8.0-02.x86_64.rpm

  To make this the default version, execute:
    /opt/cray/admin-pe/set_default_files/set_default_pgi_12.8.0

Certain components, files or programs contained within this package or product are Copyright -2012 Cray Inc. All rights reserved.