Data Processing

  • GBT Observer Alert

    GBT at 3/4 azimuth Slew Rate

    Three more azimuth wheels have been replaced during this summer maintenance period. Wheel inspection shows no advanced signs of fatigue in the remaining wheels. The restriction to 1/2 azimuth slew rate has been lifted and the GBT is now moving at 3/4 azimuth slew rate.

    Read More …

  • GBT Observer Alert

    Use Ariel for GBT Observations

    The Green Bank Observatory is in the process of upgrading to Red Hat 8 (RH8). We are in the next phase of the process and observations now need to be done with the current RH8 machine Ariel! 

    Read More …

Computing Machines

You can process your data using your GBO computing account. Please use one of the machines listed below. You can find technical specifications for all machines here.

fourier

planck

newton

euclid

thales

arcturus

Processing Tools

Provided below you find a number of custom in-house developed tools and third-party software packages. These tools will help you analyzing your GBT data.

Processing Spectral line and continuum data

Processing Pulsar Data

DSPSR

DSPSR is an open source C++ library for digital signal processing of pulsar timeseries. It provides an extensive range of algorithms for use in coherent dedispersion, filterbank formation, pulse folding, etc. DSPSR is particularly useful for processing baseband voltage data.

Other tools

GBT Data Reduction Computers and Public Workstations

For data processing, use the server machines with more than 100GB of RAM. Only BeeGFS client machines have access to the raw VEGAS data. Please make use of your /home/scratch area for storing data products instead of your home area under /users. For more information on disk space, see here.

Data Reduction Servers

Server NameOSRAM (GB)CPU CoresCPU FrequencyAccessAdditional Information
euclidRed Hat EL7128162.1 GHzRemote onlyBeeGFS client; nvidia GPU
thalesRed Hat EL8128162.1 GHzRemote onlyBeeGFS client, nvidia GPU
fourierRed Hat EL819282.4 GHzRemote onlyBeeGFS client
planckRed Hat EL819282.4 GHzRemote onlyBeeGFS client
arcturusRed Hat EL8128322.1 GHzRemote onlyBeeGFS client; for GBT pipline runs
cardanoRed Hat EL82482.4 GHzRemote onlyno BeeGFS
newtonRed Hat EL819282.4 GHzRemote onlyBeeGFS client

On-Site Public Workstations

Workstation NameOSRAM (GB)CPU CoresCPU FrequencyLocationAdditional Information
cordeshRed Hat EL8843.4 GHzJL Observer Peripherydual monitor; DVD writer, CDRW
ajaxRed Hat EL81643.4 GHzJL Observer Officenvidia GPU; DVD writer, CDRW
bratacRed Hat EL8843.4 GHzJA-203dual monitor; DVD writer, CDRW

Disk Space

There are two main areas where you may store your data:

  • Your user area: /users/username
    This is your home directory, where you start when you log in. This area is quota’ed and you may keep a maximum of 20 GB here. This area is backed up on a daily basis so any files kept here are safe from accidental deletion.
  • Your scratch area: /home/scratch/username
    This is an area where you can store larger datasets and files while you’re actively working on them. It is not intended for long-term data storage! This area is quota’ed, and you may keep a maximum of 2 TB here. If the disc fills up too much you may be asked to move or delete data, or the sysadmins may delete it for you if the data is obviously not being currently worked on. This area is not backed up.

What you can do to help

  • Keep your data organized. Easier for you and easier for the sysadmins when restoring your files.
  • Don’t keep multiple copies of the same file in different places. Use softlinks instead.
  • Don’t keep unwanted data online, please copy it elsewhere or delete it when you have finished with it.
  • Log out when you leave for the night.


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