MPI_SYSX
Submitting C MPI Programs to System X

This directory contains some examples of PBS scripts used on SYSTEM X in order to submit and run C programs that use MPI, the Message Passing Interface.

Related Data and Programs:

CONDOR is a remote queueing system.

LAMMPS is an executable FORTRAN77 molecular dynamics simulation program which uses MPI. A serial version can be created by linking the program with the MPI_STUBS library.

METIS is a C library (and a family of executable programs based on it) which can partition the nodes of a graph or the elements of a finite element mesh in a way suitable for further treatment by parallel processing.

MPI is the Message Passing Interface, which allows programs to execute in parallel.

MPI_CONDOR is a directory of CONDOR scripts for running C programs under MPI on the FSU cluster.

MPI_ECLIPSE is a directory of LoadLeveler scripts for running C programs under MPI on the ECLIPSE IBM SP system at FSU.

MPI_INTRODUCTION is a one page introduction to MPI.

MPI_MORE_INFO contains a list of references, web sites, examples and tutorials on MPI.

MPI_SYSX is also available in a C++ version and a FORTRAN77 version and a FORTRAN90 version.

MPI_STUBS is a C library of "stub" MPI routines, which allows a user to compile, load, and possibly run an MPI program on a serial machine.

OPEN_MP is a directory of C examples which illustrate the use of the OpenMP application program interface for carrying out parallel computations in a shared memory environment.

PETSC is a scientific programming library for parallel programming, which requires MPI in order to run.

PLTMG_SINGLE is a FORTRAN77 finite element program that can be compiled and run with the MPI library.

SGE is the Sun Grid Engine, a remote queueing system.

Reference:

1. William Gropp, Ewing Lusk, Anthony Skjellum,
   Using MPI: Portable Parallel Programming with the Message-Passing Interface,
   Second Edition,
   MIT Press, 1999,
   ISBN: 0262571323,
   LC: QA76.642.G76.

Examples and Tests:

BONES passes a vector of real data from one process to another. It was used as an introductory example in an MPI workshop.

• bones.c, the source code;
• bones.sh, a PBS command file to run the compiled program on System X.
• bones_output.txt, the output file;

BUFFON_LAPLACE demonstrates how parallel Monte Carlo processes can set up distinct random number streams.

• buffon_laplace.c, the source code;
• buffon_laplace.sh, a PBS command file to run the compiled program on System X.
• buffon_laplace_output.txt, the output file;

DAY1_EX3 works out exercise #3 assigned after day 1 of a workshop on MPI. The instructions were to have process 1 generate some integers, send them to process 3 which used some of those values to generate some real numbers which were then sent back to process 1.

• day1_ex3.c, the source code;
• day1_ex3.sh, a PBS command file to run the compiled program on System X.
• day1_ex3_output.txt, the output file;

HELLO simply prints out "Hello, world!" from each MPI process.

• hello.c, the source code;
• hello.sh, a PBS command file to run the compiled program on System X.
• hello_output.txt, the output file;

INTERVALS estimates an integral by dividing an interval into subintervals, and having the servant processes estimate the integral over each subinterval.

• intervals.c, the source code;
• intervals.sh, a PBS command file to run the compiled program on System X.
• intervals_output.txt, the output file;

MATVEC multiplies a matrix times a vector.

• matvec.c, the source code;
• matvec.sh, a PBS command file to run the compiled program on System X.
• matvec_output.txt, the output file;

MONTE_CARLO computes PI by the Monte Carlo method, testing whether random points in the unit square are in the unit circle.

• monte_carlo.c, the source code;
• monte_carlo.sh, a PBS command file to run the compiled program on System X.
• monte_carlo_output.txt, the output file;

POISSON_SERIAL solves the Poisson equation on a 2D grid. This version of the program does not use MPI, and is provided for comparison.

• poisson_serial.c, the source code;
• poisson_serial.sh, a PBS command file to run the compiled program on System X.
• poisson_serial_output.txt, the output file;

PRIME_SUM computes the sum of the prime numbers between 2 and N.

• prime_sum.c, the source code;
• prime_sum.sh, a PBS command file to run the compiled program on System X.
• prime_sum_output.txt, the output file;

QUADRATURE estimates an integral.

• quadrature.c, the source code;
• quadrature.sh, a PBS command file to run the compiled program on System X.
• quadrature_output.txt, the output file;

SEARCH searches a vector for occurrences of a particular value.

• search.c, the source code;
• search.sh, a PBS command file to run the compiled program on System X.
• search_output.txt, the output file;

SUM sums a number of values.

• sum.c, the source code;
• sum.sh, a PBS command file to run the compiled program on System X.
• sum_output.txt, the output file;

TYPE demonstrates the use of a user-defined datatype, and uses the Fortran 90 user-defined type to do this.

• type.c, the source code;
• type.sh, a PBS command file to run the compiled program on System X.
• type_output.txt, the output file;

VERSION calls an MPI routine that returns the version and subversion levels of the MPI library.

• version.c, the source code;
• version.sh, a PBS command file to run the compiled program on System X.
• version_output.txt, the output file;

You can go up one level to the C source codes.