---
name: "MPI.mpich2"
section: "1"
platform: "linux"
package: "mpich2"
version: "1.4.1-4.2"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/MPI.mpich2"
---

# MPI.mpich2(1)

Introduction to the Message-Passing Interface

## NAME

MPI -  Introduction to the Message-Passing Interface

## DESCRIPTION

MPI stands for Message Passing Interface. MPI is a specification (like C or Fortran) and there are a number of implementations.  The rest of this man page describes the use of the MPICH implementation of MPI.

## GETTING STARTED

Add MPI to your path

```
% set path = ( $path /usr/local/mpi/bin )
```

for the  *csh* and  *tcsh* shells, or

```
% export path=$path:/usr/local/mpi/bin
```

for  *sh* ,  *ksh* , and  *bash* shells.

Compute pi to a given resolution on 8 processes

```
% mpiexec -n 8 /usr/local/mpi/examples/cpi
```

You can compile and link your own MPI programs with the commands  *mpicc* , *mpif77* ,  *mpicxx* , and  *mpif90* :

```
% mpicc -o cpi cpi.c
% mpif77 -o fpi fpi.f
% mpicxx -o cxxpi cxxpi.cxx
% mpif790 -o pi3f90 pi3f90.f90
```

using the source code from  **/usr/local/mpi/examples** .

## DOCUMENTATION

PDF documentation can be found in directory */usr/local/mpi/doc/* . These include an installation manual ( *install.pdf* ) and a user's manual ( *usermanual.pdf* ).

Man pages exist for every MPI subroutine and function.  The man pages are also available on the Web at  *http://www.mcs.anl.gov/mpi/www* .

Additional on-line information is available at  *http://www.mcs.anl.gov/mpi* , including a hypertext version of the standard, information on other libraries that use MPI, and pointers to other MPI resources.

## VERSION

MPICH2 version 1.0

## LICENSE

Copyright 2002 University of Chicago. See the file  *COPYRIGHT* for details.  The source code is freely available by anonymous ftp from  *ftp.mcs.anl.gov* in  *pub/mpi/mpich2-beta.tar.gz* .

## FILES

```
/usr/local/mpi/                 MPI software directory
/usr/local/mpi/COPYRIGHT        Copyright notice
/usr/local/mpi/README           various notes and instructions
/usr/local/mpi/bin/             binaries, including mpiexec and mpicc
/usr/local/mpi/examples         elementary MPI programs
/usr/local/mpi/doc/             documentation
/usr/local/mpi/include/         include files
/usr/local/mpi/lib/             library files
```

## CONTACT

MPI-specific suggestions and bug reports should be sent to  *mpich-discuss@mcs.anl.gov* .

## LOCATION

manpage.txt