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    HPC Pack 2008 R2 SP4 Fix for Excessive CPU Usage on High Core Count Machines

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    This update fixes an issue where the SDM service may consume a large amount of CPU resources
    • Version:

      3.04.4185

      File Name:

      KB2816209-x64.exe

      Date Published:

      2/22/2013

      File Size:

      428 KB

        This update fixes an issue where the SDM service may consume a large amount of CPU resources on head nodes that have a large number of cores. After applying this update the SDM service can no longer spawn unlimited threads unnecessarily.
    • Supported Operating System

      Windows HPC Server 2008 R2, Windows Server 2008 R2

        An HPC Pack 2008 R2 / HPC Server 2008 R2 cluster
        HPC Pack 2008 R2 Service Pack 4 must be installed
      • This hotfix need to be run on the head node(s).

        To start the download, click the Download button and then:
        1) Click Save to copy the download to your computer.
        2) Run the download on the headnode using an administrator account.
        Note: If you have HA headnodes, run the fix on the Active node, move the node to Passive, and after failover occurs run the fix on the new Active node. Do this for all head nodes in the cluster.


        Some updates may apply to more than one piece of HPC Pack software. In order to uninstall those updates, remove them in the following order:
        1) Update for HPC Pack 2008 R2 Services for Excel 2010
        2) Update for HPC Pack 2008 R2 Client Components
        3) Update for HPC Pack 2008 R2 Server Components
        4) Update for HPC Pack 2008 R2 MS-MPI Redistributable Pack
        If you don't follow the order, you might not be able to uninstall the QFE, as some QFE will have dependence across components
        Note: If you have HA headnodes, uninstall the updates on a passive head node, move the node to Active, and then repeat uninstallation on the new passive head node. Do this for all head nodes in the cluster.

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