Folding a System

Prerequisite
Make sure you have increased limits. Read about COP entries and make sure your system is properly configured.
Use this procedure to fold a system after deployment.
  1. [First time you fold] Check to see if your system can be folded:
    # tdc-fold -d
  2. Enter one of the following commands to start the fold process:
    After entering one of the following commands, you can check log files to determine how long the process will take to finish.
    CommandDescription
    # tdc-fold 2xRemoves half of the current node count.

    For example, if the current system has 8 nodes, the folded system will have 4 nodes.

    # tdc-fold 4xRemoves a quarter of the current node count.

    For example, if the current system has 8 nodes, the folded system will have 2 nodes.

    The output displays how the configuration changes after the system has folded, as shown in the following example:
    Current system will be folded by [2x]:
    ===========================================================================
     Nodes:
             Node Count:    4 => 2
    ---------------------------------------------------------------------------
     CPU(Core)/Mem(GB):
              CPUs/Node:   16 == 16       CPUs Total:   64 => 32
               Mem/Node:   65 == 65        Mem Total:  260 => 130
    ---------------------------------------------------------------------------
     AMPs/PEs:
              AMPs/Node:   10 => 20       AMPs Total:   40 == 40
               PEs/Node:    2 == 2         PEs Total:    8 => 4
    ===========================================================================
    Continue? [yes/no] yes
  3. Enter yes.
    When the process completes, the new configuration appears under Current Configuration.
  4. [Optional] Check the status of the database.
    # pdestate –a
  5. [Optional] Check the logs for troubleshooting.

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