MHPCC
Holiday Notice - Monday, September 1st, 2014
03 March 2014
On Monday, September 1st, 2014 MHPCC will be operating on a holiday schedule. The center will be open and all technology services will be available, however MHPCC will be operating at reduced staffing levels.

If you require assistance, onsite staff will be available to respond to Severity 1 Help Desk calls at 808-879-5077, and if necessary, MHPCC will contact other technical staff if needed. If you anticipate requiring any special assistance on September 1st, please contact our User Services department or the CCAC by email or by telephone.


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Resource Limits

Disk Limits and Usage

  1. Disk quotas in effect for all users
  2. Mass storage

    MHPCC provides virtually unlimited data storage to its Riptide users via the data archive system. The hostname of the archival system for each platform is available in the ARCHIVE_HOST environment variable. An individual user's directory on this system is available through the ARCHIVE_HOME environment variable. Please consult the online documentation for details on how to use the archive system.

  3. Temporary disk space

    There are several file systems available for temporary disk space:

    RIPTIDE

    Name Description Size Purge Policy
    /scratch Local and unique to each node. 30 Gbytes After each run
    See WORKDIR environment variable Global shared scratch 200 Tbytes Files older than 14 days are purged

  4. How you can help

    Disk usage will be periodically reviewed by MHPCC and if it is determined that any user is consuming an excessive amount of disk space, that user will be notified. For the most part, however, MHPCC encourages all of its users to practice "good neighbor" computing, keeping in mind that the system is shared by hundreds of other users and that disk resources are limited. Some practices which help all users include:

    • Always remove your files from public, shared disk space as soon as you no longer need them. This includes files in any of the scratch file systems.
    • Periodically "clean up" your home directory to remove old and unnecessary files.
    • Check with the MHPCC Help Desk () before installing software in your home directory which might be of general use to other users. In this way, MHPCC can install one version in a single location and prevent the waste of disk space that occurs when multiple versions are installed in various user home directories.

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