Seeds Pattern Programming Framework

Frequently Asked Questions

March 2, 2013

General: Always first check that all entered information is correct.


1. When I run a Seeds project, I get  in the console window  "...could not get message .. connection refused .." and  stops.

Check that the name of the computer you have used in the AvailableServers.txt and in an argument for the run module class are correct.  In particular, do not use the computer name that you will see from "View system information"  or similar, which can have additional chararters added to the name. You MUST use the hostname command to retrieve the computer name.

2 I get a "connection timed out" message in the logging messages and then stops.

If for some reason you get connection timed out or the output does not proceed after a previous failed launch you may need to restart Eclipse as a port may not have closed properly. If all else fails, try re-starting the computer.

Other possible reasons include firewalls blocking ports. Try the non-network and multicore versions.


3. Multicore version: I get a “java.lang.NullPointerException at edu.uncc.grid.example.workpool.RunMonteCarloPiModule.main(RunMonteCarloPiModule.java:23)" error

Make sure you are using just one argument for the program, the name of the computer.

Make sure the Java version is compatible. 32-bit Eclipse must use 32-bit Java and 64-Bit Eclipse must be used if 64-bit Java is installed.

4. I get the error "Exception ... Seeds cannot be resolved ..."

Check the path to the seeds in the first command line argument of the Bootstrap run module class.

Reconstruct the build path for the Seeds libraries.