multitask_mpi, a FORTRAN77 code which demonstrates how to multitask, that is, to execute several unrelated and distinct tasks simultaneously, using MPI for parallel execution.
In this example, there is a "master" process, identified as process 0, and two worker processes, 1 and 2. Process 0 does nothing but choose the input for the worker processes, transmit it, and wait for the computed results to be returned. The programs executed by process 1 and by process 2 are quite different.
While the typical MPI model has all the worker processes executing the same program, this example shows that that is not necessary.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
multitask_mpi is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version.
COMMUNICATOR_MPI, a FORTRAN77 program which creates new communicators involving a subset of initial set of MPI processes in the default communicator MPI_COMM_WORLD.
HEAT_MPI, a FORTRAN77 program which solves the 1D Time Dependent Heat Equation using MPI.
HELLO_MPI, a FORTRAN77 program which prints out "Hello, world!" using the MPI parallel programming environment.
MOAB, examples which illustrate the use of the MOAB job scheduler for a computer cluster.
MPI, FORTRAN77 programs which illustrate the use of the MPI application program interface for carrying out parallel computatioins in a distributed memory environment.
MULTITASK_OPENMP, a FORTRAN77 program which demonstrates how to "multitask", that is, to execute several unrelated and distinct tasks simultaneously, using OpenMP for parallel execution.
PRIME_MPI, a FORTRAN77 program which counts the number of primes between 1 and N, using MPI for parallel execution.
QUAD_MPI, a FORTRAN77 program which approximates an integral using a quadrature rule, and carries out the computation in parallel using MPI.
RANDOM_MPI, a FORTRAN77 program which demonstrates one way to generate the same sequence of random numbers for both sequential execution and parallel execution under MPI.
RING_MPI, a FORTRAN77 program 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 FORTRAN77 program 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 FORTRAN77 program which searches integers between A and B for a value J such that F(J) = C, using MPI for parallel execution.
WAVE_MPI, a FORTRAN77 program which uses finite differences and MPI to estimate a solution to the wave equation.