HELLO_MPI, a C code which prints out "Hello, World!", while invoking the MPI parallel codeming system.
If you're just trying to learn MPI, or learning how to use MPI on a different computer system, or in batch mode, it's helpful if you start with a very simple code with a tiny amount of output that should print immediately if things are working well.
The computer code and data files made available on this web page are distributed under the GNU LGPL license.
HELLO_MPI is available in a C version and a C++ version and a FORTRAN90 version and a Python version.
COMMUNICATOR_MPI, a C code which creates new communicators involving a subset of initial set of MPI processes in the default communicator MPI_COMM_WORLD.
HEAT_MPI, a C code which solves the 1D Time Dependent Heat Equation using MPI.
HELLO, a C code which prints out "Hello, world!".
HELLO_OPENMP, a C code which prints out "Hello, world!" using the OpenMP parallel codeming environment.
LAPLACE_MPI, a C code which solves Laplace's equation on a rectangle, using MPI for parallel execution.
mpi_test, C codes which illustrate the use of the MPI application code interface for carrying out parallel computatioins in a distributed memory environment.
MULTITASK_MPI, a C code which demonstrates how to "multitask", that is, to execute several unrelated and distinct tasks simultaneously, using MPI for parallel execution.
POISSON_MPI, a C code which computes a solution to the Poisson equation in a rectangle, using the Jacobi iteration to solve the linear system, and MPI to carry out the Jacobi iteration in parallel.
PRIME_MPI, a C code which counts the number of primes between 1 and N, using MPI for parallel execution.
QUAD_MPI, a C code which approximates an integral using a quadrature rule, and carries out the computation in parallel using MPI.
RANDOM_MPI, a C code which demonstrates one way to generate the same sequence of random numbers for both sequential execution and parallel execution under MPI.
RING_MPI, a C code which uses the MPI parallel codeming environment, and measures the time necessary to copy a set of data around a ring of processes.
SATISFY_MPI, a C code which demonstrates, for a particular circuit, an exhaustive search for solutions of the circuit satisfiability problem, using MPI to carry out the calculation in parallel.
SEARCH_MPI, a C code which searches integers between A and B for a value J such that F(J) = C, using MPI.
WAVE_MPI, a C code which uses finite differences and MPI to estimate a solution to the wave equation.