The first step is to download mpich and install any necessary patches.
2. Unpack the mpich.tar.gz file into a build directory. We
recommend using a locally mounted partition rather than an NFS
(network file system) partition. For example, on many systems,
/tmp or /sandbox are locally mounted. Make sure that
there is enough space available (100MB should be more than enough).
To unpack, assuming that mpich.tar.gz has been downloaded into
/tmp, use
% cd /tmp % tar zxovf mpich.tar.gzIf your tar does not accept the z option, use
% cd /tmp % gunzip -c mpich.tar.gz | tar zxovf -