On this page: http://jogamp.org/wiki/index.php/JOCL_FAQ under "How can I test if OpenCL is properly set up on my system?", it says:

or invoke: java -jar jocl.jar -Djava.library.path="path/to/jocl/libs" com.jogamp.opencl.util.CLInfo

This is incorrect. The correct invocation is:

java -classpath jocl.jar:path/to/gluegen-rt.jar -Djava.library.path="path/to/native/libs" com.jogamp.opencl.util.CLInfo


Also, at some point it should be mentioned that the native library jarred up by the ant build in gluegen-rt-natives-xxx.jar and jocl-natives-xxx.jar need to be unjarred and placed somewhere that is the same as path/to/native/libs.