Setup

Steps before using MPI:

MPI has been installed in both the uAPE and APE labs and has been configured with ssh (secure shell). It turns out that it is simpler to use MPI with ssh rather than rsh (plus rsh is disabled in the APE lab).
If you don't already have ssh configured for your account, here's what you need to do:
- See Walfredo Cirne's talk in the Graduate Enrichment Seminar - Parallelism with No Pain for information about how to set up ssh OR
- See this page.

Your environment:

160 students: This is the standard setup that you've probably seen before.
- Each of you has disk space to develop your code at /home/solaris/ieng9/cs160s/your_login
- Everytime you login, type
```
prep cs160s
```
  This will setup some environmental variables so that MPI commands will be added to your path OR
- Add the following to both your .login file and your .cshrc file in your home directory
```
set PUBLIC = /home/solaris/ieng9/cs160s/public
set MPI = /home/solaris/ieng9/cs160s/public/mpich

set PATH = ( ${PATH}:${MPI}/bin )

if ($?MANPATH) then
    set MANPATH = ( ${MANPATH}:${MPI}/man )
else
    set MANPATH = ( ${MPI}/man )
endif
```

260 students:

Each of you has disk space to develop your code at /net/bintijua/class/sp99/cse260/your_login

Add the following to your .cshrc file in your home directory

setenv PUBLIC /net/bintijua/class/sp99/cse260/public
setenv MPI  /net/bintijua/class/development/berman/cse260/public/mpich

setenv PATH ${PATH}:${MPI}/bin
setenv MANPATH ${MANPATH}:${MPI}/man

Note: The PUBLIC variable is just a convenience variable.