PGI Compiler
Overview
The Portland Compiler Suite (now owned by Nvidia) contains Fortran 95, Fortran 90, Fortran 77, C, C++, HPF and CUDA Accelerator compilers for machines running 64bit Linux.
Version 18.10 is installed on CSF4.
Note: the PGI CUDA Accelerator supports OpenACC compiler directives.
Restrictions on use
There are only two network licenses available site wide for each of Fortran and C/C++. If you get a license related error, it is almost certainly because all of our licenses are in use and you should try again at a later time. For further licensing information see the following webpage:
Set up procedure
To gain access to these compilers, run one of the following command after logging into the login node.
module load pgi/18.10 # Will use some GCC 6.4.0 functionality
Basic compilation commands
Basic compilation commands are as follows:
# C pgcc hello.c -o hello # C++ (note: use pgc++ if link compatibility with the GNU C++ compiler is required) pgCC hello.cpp -o hello pgcpp hello.cpp -o hello # Fortran pgf90 hello.f90 -o hello pgf95 hello.f90 -o hello pgfortran hello.f90 -o hello # High performance fortran pghpf hello.hpf -o hello
Target Architectures
To compile specifically for architectures such as Intel Skylake use the -tp=architecture flag. For example:
pgcc -tp=skylake hello.c -o hello_skylake
Note that the installed version of the PGI compiler does not support Intel Cascade Lake found in CSF4. This is newer than Skylake. You may still compiler specifically for Skylake and your code will be optimized for the features found in that CPU. This will give you some optimization but not the maximum that the Cascade Lake could actually do.
Sample code
Sample code can be found in the subfolders of the $PGIEXAMPLES directory
AutoPar CUDA-Fortran CUDA-Libraries CUDA-x86-SDK F2003 MPI OpenACC OpenMP
Each subfolder contains makefiles to compile the sample code. If you copy these folders and see an errors like /usr/bin/ld: cannot open output file c1.exe: Permission denied when compiling ensure you have the necessary permissions to write files to your folders.
Further information
Once you have loaded the PGI module (see set up procedure), basic documentation is available as a manpage:
man pgcc man pgf90 man pgc++