MPICH is distributed under a BSD-like license. NOTE: MPICH binary packages are available in many UNIX distributions and for Windows. For example, you can search for it using “yum” (on Fedora), “apt” (Debian/Ubuntu), “pkg_add” (FreeBSD) or “port”/”brew” (Mac OS). If available for your platform, this is likely the easiest installation method since it automatically checks for dependency packages and installs them. Otherwise you can use the installation guide for installing MPICH from the source code below.
Release Platform Download Size
mpich-3.1.4 (stable release)MPICH[http]11 MB
hydra-3.1.4 (stable release)Hydra (mpiexec)[http]3 MB
mpich-3.2b3 (preview release)MPICH[http]12 MB
hydra-3.2b3 (preview release)Hydra (mpiexec)[http]3 MB
Older releases are available here. Nightly snapshots are available here.   MPE releases are available here.

Packages Included in UNIX/Windows Distributions:

Platform Maintainer(s) Download Base MPICH Version
Ubuntu Torquil Macdonald Sorensen [vivid] 3.1
[utopic] 3.1.4
[trusty] 3.0.4
Debian Torquil Macdonald Sorensen [sid] 3.1
[jessie] 3.1
Fedora/RHEL/CentOS Deji Akingunola [fc22] 3.1
[fc21] 3.1
[fc20] 3.0.4
[fc19] 3.0.4
[fc18] 3.0.4
FreeBSD Chris Rees Thierry Thomas [http] 3.1.3
Gentoo Justin Lecher Justin Bronder [http] 3.1.3
Mac OS (via MacPorts) Eric A. Borisch [stable] 3.1.4
[devel] 3.2b2
Mac OS (via homebrew) Huiwei Lu [stable] 3.1.4
[devel] 3.2b1
Open Indiana Aurelien Larcher [http] 3.1.3
Microsoft Windows Microsoft MPI Team [http] 1.0.3

Unofficial Binary Packages:

Platform Author Download Base MPICH Version
Windows Jayesh Krishna [x86] 1.4.1p1
[x86_64] 1.4.1p1
Ubuntu Marcelo Souza [http] 3.2b2
Debian Marcelo Souza [http] 3.2b2
Slackware Marcelo Souza [http] 3.2b2

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