MPI_CONDOR
Submitting C MPI Programs Under CONDOR

This directory contains some examples of scripts that can be input to the CONDOR queueing system, in order to submit and run C programs that use MPI, the Message Passing Interface.

Related Data and Programs:

CONDOR is the remote queueing system used to submit MPI jobs to the SCS clusters.

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 examples are also available in a C++ version, and a FORTRAN77 version, and a FORTRAN90 version.

MPI_ECLIPSE is a directory of LoadLeveler scripts for running C programs using MPI on the Eclipse IBM SP 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_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.

MPI_SYSX is a directory of PBS scripts for running C programs using MPI on System X.

OPEN_MP is a simple system for parallel programming that relies on the use of shared memory.

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 example in an introductory MPI workshop.

• bones.c, the source code;
• bones.condor, a CONDOR script to run the program;
• 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.condor, a CONDOR script for running the program.
• 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.condor, a CONDOR script to run the program;
• day1_ex3_output.txt, the output file;

HELLO simply has each process say hello:

• hello.c, the source code;
• hello.condor, a CONDOR script to run the program;
• hello_output.txt, the output file;

MATVEC computes a matrix-vector product c = A * b, giving each process a copy of the vector b, and using self-scheduling to let any process have the next row of A to work on when it is ready. Arrays are allocated dynamically. The "math.h" include file is needed, as is the run-time math library.

• matvec.c, the source code;
• matvec.condor, a CONDOR script to run the program;
• matvec_output.txt, the output file;

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

• monte_carlo.c, the source code;
• monte_carlo.condor, a CONDOR script to run the program;
• monte_carlo_output.txt, the output file;

QUADRATURE integrates a function f(x) over an interval;

• quadrature.c, the source code;
• quadrature.condor, a CONDOR script to run the program;
• quadrature_output.txt, the output file;

SEARCH searches a list of numbers for all occurrences of a target value.

• search.c, the source code;
• search.condor, a CONDOR script to run the program;
• search_output.txt, the output file;

SUM adds a list of numbers.

• sum.c, the source code;
• sum.condor, a CONDOR script to run the program;
• sum_output.txt, the output file;

TYPE sets up a user-defined datatype, and sends and receives data in this form.

• type.c, the source code;
• type.condor, a CONDOR script to run the program;
• type_output.txt, the output file;

VERSION calls a routine that reports the version and subversion of MPI.

• version.c, the source code;
• version.condor, a CONDOR script to run the program;
• version_output.txt, the output file;

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