hello_mpi, a C code which prints out "Hello, World!", while invoking the MPI parallel programming 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 information on this web page is distributed under the MIT 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 programming 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 programming 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.