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Owens Information Transition

Owens cluster will be decommissioned on February 3, 2025. Some pages may still reference Owens after Owens is decommissioned , and we are in the process of gradually updating the content. Thank you for your patience during this transition

Pitzer

Emergency maintenance in data center Feb 10 2022

OSC will shut down significant portions of the Owens and Pitzer clusters for several hours on Thursday, Feb. 10 to conduct emergency maintenance work on power systems in the data center. Jobs running on impacted nodes will be terminated when this work begins. OSC will issue refunds as needed for any impacted jobs. Additionally, due to reduced capacity on both clusters, queued jobs will experience delays until the maintenance is complete and the scheduler has a chance to clear out any backlog. We apologize for the inconvenience.

Unblur

Unblur is used to align the frames of movies recorded on an electron microscope to reduce image blurrig due to beam-induced motion. It reads stacks of movies that are stored in MRC/CCP4 format. Unblur generates frame sums that can be used in subsequent image processing steps and optionally applies an exposure-dependent filter to maximize the signal at all resolutions in the frame averages. Movie frame sums can also be calculated using Summovie, which uses the alignment resuls from a prior run of Unblur.

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