Speaker
Description
Re-processing data with improved detector understanding, new data processing methods, etc. is natural for any particle physics experiments over the course of its life. The IceCube Neutrino Observatory has previously re-processed its data nearly a decade ago. Now we are processing the data for the third time, which we call Pass3. With this reprocessing, we have recorded three times as much data, and need to apply new algorithmic improvements that increase the run time by 25%. This processing is being run exclusively at the Texas Advanced Computing Center’s Vista HPC system because the data is co-located at the facility. We will share our experience with retrieving all data from tape, reprocessing it, and uploading the new version to our main data storage at UW-Madison.