OpenMP
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Compiling OpenMP code on zcluster
The compilers installed on zcluster support shared memory applications using OpenMP. Here are the compiler options to include when using OpenMP:
| Compiler | Commands | Option |
|---|---|---|
| PGI | pgcc, pgCC, pgf90, etc. | -mp |
| Intel | icc, ifort | -openmp |
| GNU | gcc, gfortran, g++, gcc44, etc. | -fopenmp |
Defining number of OpenMP threads
The number of OpenMP threads can be specified using the environment variable OMP_NUM_THREADS. For example, to define 4 threads:
For bash/sh:
export OMP_NUM_THREADS=4
For csh/tcsh:
setenv OMP_NUM_THREADS 4