Data

When Mike Warren was a graduate student 20 years ago, computational astrophysicists were conducting simulations of the universe’s structure with a million particles representing large masses of matter like galaxy …
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With big science comes big data. In fact, large-scale simulations that run on leadership-class supercomputers work at such high speeds and resolution that they generate unprecedented amounts of data. The …
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OLCF staff delivered talks and tutorials to Lustre users covering the center’s on-going contributions to the effort to expand the parallel file system’s performance and flexibility.
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ORNL’s MDF recently reached out to the Oak Ridge Leadership Computing Facility’s (OLCF’s) Advanced Data and Workflow Group for assistance with 3-D visualization.
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The OLCF will support a new service, Spark On-Demand, that enables users to instantiate Apache Spark to conduct in situ data analysis on OLCF compute resources.
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Recently, a cross-departmental team engaged in an ongoing process to make data transfer easier for OLCF users.
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ORNL and the OLCF once again took leadership roles at SC15, the 27th meeting of the annual supercomputing conference.
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Sreenivas Rangan Sukumar is the new Group Leader for the Advanced Data and Workflow Group.

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For OLCF users, managing cache behavior has gotten a little easier thanks to the newly developed tool GLprof.
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Researchers at the OLCF are working to speed up the process of data transfer using a new tool.
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The OLCF played a significant role in an ORNL event to share knowledge and discuss the future development of the parallel file system, Lustre.
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OLCF staff have invested heavily in making sure users can access data quickly while also taking steps to keep data safe.
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The OLCF’s RAIT system allows incoming data to be striped across four tapes, but it also has an extra tape—called a parity tape—that can allow the data to be reconstructed in the event that a tape is damaged or lost.
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For many researchers, Titan is only part of the picture; managing and understanding data are quickly becoming as important as the simulations that create it.
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A new data quality assurance tool developed by the Technology Integration Group at the OLCF will help protect that data by validating the integrity of the High Performance Storage System (HPSS) archive.
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The Joint Facilities User Forum on Data-Intensive Computing brought together users and HPC center staff to discuss approaches to handling data, best practices, and the future of data-driven scientific discovery.

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