Mark 23 C using Intel Compiler (CLL6I23DCL)

Overview

This is the C version of the NAG library. Run the following module commands to load the environment for the Intel Compiler and the relevant NAG library

module load compilers/intel/c/12.0.5
module load libs/intel/nag/c_mark23_intel

This will set the following environment variable for easy access to the libraries, header files and example scripts:

NAG_HOME_CLL6I23DCL=/opt/gridware/libs/intel/nag/cll6i23dcl

Compiling the example programs

The NAG library ships with example programs for every routine available. The directory

$NAG_HOME_CLL6I23DCL/scripts

contains four scripts:

nag_example_mkl
nag_example_shar_mkl
nag_example
nag_example_shar

which provide easy to use interfaces to compile, link and run each of these examples. This scripts directory is added to your PATH environment variable for convenience. The differences between these scripts are shown below:

• nagc_example_mkl, to link with the NAG static library libnagc_mkl.a and the supplied MKL libraries
• nagc_example_shar_mkl, to link with the NAG shareable library libnagc_mkl.so and the supplied MKL libraries
• nagc_example, to link with the NAG self-contained static library libnagc_nag.a
• nagc_example_shar, to link with the NAG self-contained shareable library libnagc_nag.so

These can be used to inform you how to compile the NAG library according to your needs. For example, to compile,link and run the example for the routine a00aac using the NAG static library libnagc_mkl.a and the NAG-supplied MKL libraries you would run

nagc_example_mkl a00aac

The output from this script is

Copying a00aace.c to current directory
cp /software/libs/intel/nag/cll6i23dcl/examples/source/a00aace.c .

Compiling and linking a00aace.c to produce executable a00aace.exe
icc a00aace.c -I/software/libs/intel/nag/cll6i23dcl/include -m64 \
      /software/libs/intel/nag/cll6i23dcl/lib/libnagc_mkl.a -Wl,--start-group \
      /software/libs/intel/nag/cll6i23dcl/mkl_intel64/libmkl_intel_ilp64.a \
      /software/libs/intel/nag/cll6i23dcl/mkl_intel64/libmkl_intel_thread.a \
      /software/libs/intel/nag/cll6i23dcl/mkl_intel64/libmkl_core.a \
      -Wl,--end-group -openmp -lpthread -lm -o  a00aace.exe

Running a00aace.exe
./a00aace.exe > a00aace.r

Among other things, the above shows you the form of the icc command that NAG recommend for this usage case. The output from running the example will be contained in the file 00aace.r
To submit and run the above job on CSF you might use the following submission script

#!/bin/bash
#$ -S /bin/bash
#$ -N NAGExample
#$ -cwd
#$ -o outputfile.log
#$ -j y
#$ -V

./a00aace.exe > a00aace.r

CLL6I23DCL User’s note – detailed library usage notes from NAG
Mark 23 C Library Manual – Includes details of all routines