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Local documentation

The Digital AlphaServer 4100 5/400 (Tempus) is the central resource in a cluster of Digital Alpha computers available for high performance computing at MUN.

All computer jobs run on Tempus and the other processors are executed using the LSF (Load Sharing Facilty) batch queueing environment developed by Platform Computing.

In addition to the standard unix utilities, the cluster contains other software that is available to our users.

A brief outline of the process involved in getting your job to run on the cluster:

  1. Login to Plato or Kronos
    Log into one of our two front-end systems. Plato is available for MUN users, Kronos for external users. These computers share many of the same files with Tempus, but be aware that your “home” directory may not be the same on each system. The telnet address for Kronos is (kronos.ucs.mun.ca).

  2. Compile and test
    Set up your source code and input files in an appropriate place. You may transfer them to or from your home site using ftp. Compile the code, we have C and Fortran (77, 90 and 95) available, among other software, and submit a short test to the test queue to verify that it is working as expected.

  3. Batch processing
    Once the code is ready, set up a job submission script and submit the job to one of the available queues. LSF provides a comprehensive set of commands with which a user may submit jobs to various run queues and examine the state of the system, jobs and queues. Documentation of commonly used LSF commands is available.