Setting environment for remote nodes.
Client host is jones.tsukuba.ac.jp.
Remote host is dennis.hpcc.jp.
Set calc_sin.rex, which we introduced already as an example program, to "/usr/local/tmp/" .
Globus Toolkit's gate-keeper is running on dennis.hpcc.jp, and it is possible to execute programs with GRAM.
If you use this function, it executes rex directly without the agent.
