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Update on Damasc

Update on Damasc. Joe Buck. October 19th, 2010. A year later. Last year: we outlined our vision Next year: Carlos and Alkis covered that Today: Where we’re at. What’s in a name?. Last year I presented on Dice (Data Intensive Computation Environment)

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Update on Damasc

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  1. Update on Damasc • Joe Buck October 19th, 2010

  2. A year later • Last year: we outlined our vision • Next year: Carlos and Alkis covered that • Today: Where we’re at

  3. What’s in a name? • Last year I presented on Dice (Data Intensive Computation Environment) • We’ve change the name to Damasc, which incorporates parts of DICE but is more focused on data management

  4. Goal of Damasc • To allow applications to express their internal data structure to the storage system • Enable more intelligent storage layout which leads to increased functionality in the storage system

  5. Application data-element alignment in parallel FS • Created traces for common access patterns over scientific data • Mapped those traces onto a theoretical parallel file system configuration • Analyzed traces to quantify IO savings from aligning data to application data element boundaries

  6. Application data-element alignment in parallel FS - cont. We want to go from this We want to go from this

  7. MapReduce over scientific data • Goal was to implement NetCDF Operators (NCO) as MapReduce programs • Base NetCDF file decomposed via C++ application. Constituent parts stored in HDFS • Currently being worked on

  8. MapReduce over scientific data - continued We want to go from this To this

  9. MapReduce over scientific data - continued We want to go from this Or better yet

  10. Tracing of scientific application data access • Created a tracing layer for ParaView that logged data access from the application’s perspective • Noah will talk more about tracing

  11. Scientific data in a key-value store • Project to enable NetCDF ingestion into HBase

  12. Scientific data in a key-value store - continued

  13. Declarative queries over NetCDF • Integration of NetCDF format into Zorba query engine • Enabling XML queries over NetCDF • Incremental parsing to avoid loading entire file • Future work: NetCDF methods in XML Query

  14. Declarative queries over NetCDF - continued

  15. Conclusion • Last year was about exploring the problem space • Applying lessons learned, moving forward

  16. Questions • Thank you for your time • buck@soe.ucsc.edu • srl.ucsc.edu/projects/damasc

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