KaRMI is a pure Java library and requires no special setup unless you want to configure your non-standard high performance network hardware. To compile and run your KaRMI application, you need the archive karmi.jar in your application class path.
setenv CLASSPATH <your-karmi-installation>/karmi.jar:$CLASSPATH
The karmic stub and skeleton generator is packed in the archive lib/karmic.jar. You do not really care about it, since you use the script bin/karmic to invoke it. See the section "karmic" how to use it. The section KaRMI differences gives mor information how KaRMI is configured in non-standard situations.