Installing DOT

Installing DOT involves unpacking the archive and configuring your account. If you will run DOT on an IBM SP2 parallel supercomputer, you may have to make one or two other changes as described below.

Installing

The following commands will install DOT in /usr/local/dot:

    cd /usr/local

    zcat dot.tar.Z | tar xvf -

Configuring

To configure for running DOT, define the environment variable DOT_ROOT in your ~/.cshrc file (not ~/.login). Assuming DOT has been installed in /usr/local/dot, use the following command:

    setenv DOT_ROOT /usr/local/dot

DOT can be run in a variety of ways, but the most common involves the use of remote shells to start execution on multiple systems. For more information on this subject, see Configuring Remote Shells in the DOT User Guide. This configuration step must be done by each user of the program.

Configuring for the IBM SP-2

Most details have been set up for you by CCMS, however there are a few things that are site-specific. Ask your system administrator for help.

IBM SP2 users may have to edit dot/bin/dotlaunch.sp2.vendormpi and change the value of the POOL variable from '-rmpool 1' to an appropriate value for interactive runs on your SP2
IBM SP2 users may be limited in the number of processors they can access with interactive runs. You may have to use loadleveler or another queuing system. In the case of loadleveler, put the following two commands in your script to run the supplied example:

    setenv DOT_ROOT /usr/local/dot

    cd $DOT_ROOT/example1

    $DOT_ROOT/bin/exec/dot.aix.vendormpi example1.com