FUNCTIONS_OPENMP is a C program which demonstrates some features of some of the OpenMP library functions.
Some of the most useful OpenMP library functions include:
| dynamic_truefalse = | omp_get_dynamic ( ) |
| t_max = | omp_get_max_threads ( ) |
| nested_truefalse = | omp_get_nested ( ) |
| p_num = | omp_get_num_procs ( ) |
| t_num = | omp_get_num_threads ( ) |
| t_id = | omp_get_thread_num ( ) |
| wtime = | omp_get_wtime ( ) |
| in_parallel_truefalse = | omp_in_parallel ( ) |
| omp_set_dynamic ( dynamic_truefalse ) | |
| omp_set_nested ( nested_truefalse ) | |
| omp_set_num_threads ( t_num ) |
FUNCTIONS_OPENMP demonstrates how some of these functions are used, and how they behave in parallel and non-parallel regions.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
FUNCTIONS_OPENMP is available in a C version.
DIJKSTRA_OPENMP, a C program which uses OpenMP to parallelize a simple example of Dijkstra's minimum distance algorithm for graphs.
FFT_OPENMP, a C program which demonstrates the computation of a Fast Fourier Transform in parallel, using OpenMP.
HEATED_PLATE_OPENMP, a C program which solves the steady (time independent) heat equation in a 2D rectangular region, using OpenMP to run in parallel.
HELLO_OPENMP, a C program which prints out "Hello, world!" using the OpenMP parallel programming environment.
IMAGE_DENOISE_OPENMP, a C library which applies simple filtering techniques to remove noise from an image, carrying out the operation in parallel using OpenMP.
JACOBI_OPENMP, a C program which illustrates the use of the OpenMP application program interface to parallelize a Jacobi iteration solving A*x=b.
JULIA_OPENMP, a C program which produces an image of a Julia set, using OpenMP to carry out the computation in parallel.
MANDELBROT_OPENMP, a C program which generates an ASCII Portable Pixel Map (PPM) image of the Mandelbrot set, using OpenMP for parallel execution.
MD_OPENMP, a C program which carries out a molecular dynamics simulation in parallel, using OpenMP.
MULTITASK_OPENMP, a C program which demonstrates how to "multitask", that is, to execute several unrelated and distinct tasks simultaneously, using OpenMP for parallel execution.
MXM_OPENMP, a C program which computes a dense matrix product C=A*B, using OpenMP for parallel execution.
MXV_OPENMP, a C program which computes a dense matrix-vector product b=A*x, using OpenMP for parallel execution.
OPENMP, C programs which illustrate the use of OpenMP.
OPENMP_RCC, C programs which illustrate how a C program, using OpenMP, can be compiled and run in batch mode on the FSU High Performance Computing (HPC) cluster operated by the Research Computing Center (RCC).
POISSON_OPENMP, a C program which computes an approximate solution to the Poisson equation in a rectangle, using the Jacobi iteration to solve the linear system, and OpenMP to carry out the Jacobi iteration in parallel.
PRIME_OPENMP, a C program which counts the number of primes between 1 and N, using OpenMP for parallel execution.
QUAD_OPENMP, a C program which approximates an integral using a quadrature rule, and carries out the computation in parallel using OpenMP.
QUAD2_OPENMP, a C program which approximates a multidimensional integral using a quadrature rule. The quadrature computation is done with OpenMP.
QUAD2D_OPENMP, a C program which estimates an integral over a 2D rectangular domain by using an averaging technique, and uses OpenMP to carry out the calculation in parallel.
RANDOM_OPENMP, a C program which illustrates how a parallel program using OpenMP can generate multiple distinct streams of random numbers.
SATISFY_OPENMP, a C program which demonstrates, for a particular circuit, an exhaustive search for solutions of the circuit satisfiability problem, using OpenMP for parallel execution.
SCHEDULE_OPENMP, a C program which demonstrates the default, static, and dynamic methods of "scheduling" loop iterations in OpenMP to avoid work imbalance.
SGEFA_OPENMP, a C program which reimplements the SGEFA/SGESL linear algebra routines from LINPACK for use with OpenMP.
SUPERLU_OPENMP, C programs which illustrate the use of the SUPERLU_OPENMP library, a version of SUPERLU compiled with the OpenMP parallel programming interface, for the fast direct solution of large sparse systems of linear equations.
ZIGGURAT_OPENMP, a C program which demonstrates how the ZIGGURAT library can be used to generate random numbers in an OpenMP parallel program.
You can go up one level to the C source codes.