LoadLeveler Release 1.2 Quick-start notes

LoadLeveler v. 1.2 was installed on the NIST SP2 as part of the site upgrade on February 16, 1996. Following is a summary of things that you will definitely have to change in your job command file to get your job to run. The new release of LoadLeveler just installed has several new features which are not described here - this is only a guideline to changes you can make quickly to get your previous batch code up and running again. More information about the new release can be found on-line, either through the 'info' utility, or in the postscript version of the LoadLeveler documentation, which can be found in the directory: /usr/lpp/LoadL/postscript (on danube)

• If you have manually created your job command file and batch script, you will have to several changes in each command file you wish to use. (Further adjustments to your script may also have to be made, depending on your particular application. Please see the on-line LoadL information.)
  
  Summary of necessary command file changes:
  
  
  • The ``parallelmachines" keyword is no longer valid. You should remove that line from your command file. Substitute ``job_type", ``min_processors" and ``max_processors":
    

       # @ job_type = parallel
       #
       # @ min_processors = 5
       #
       # @ max_processors = 5
       

    
    
  • The class names have changed. The new classes can be listed with the command "classes" (longer listing) or "llclass" (short listing). REMEMBER: LoadLeveler is CASE SENSITIVE! For each of our current class names, the first letter is capitalized, the rest are not.
    

        >>!! Misspellings of the class name will  !!<<
        >>!! cause the job to hang in the queue.  !!<<
        

    
    
  • One useful note: a list of nodes assigned to your batch job can be obtained from the environment variable $LOADL_PROCESSOR_LIST.
  
  
  
• You should relink your programs so that they link with the latest parallel support program library. Also, the link step for PVMe programs is very sensitive to ordering. The ordering provided in previous sample makefiles no longer works. Please see the Sample PVMe program makefile for the proper link step.
  
  
• The LLCREATE utilities have been modified to work under the aew LoadLeveler. You can continue to use the PVM, PVMe and MPL scripts provided with LLCREATE. You must, however, regenerate the command file used to submit your job(s). Since the configuration is new, please report any problems that you may have with LLCREATE, since this will help iron out bugs that haven't been fully resolved by the initial testing.