|Title||Analyzing How We Do Analysis and Consume Data, Results from the SciDAC-Data Project |
|Publication Type||Journal Article |
|Year of Publication||2017 |
|Authors||Ding, P, Aliaga, L, Mubarak, M, Tsaris, A, Norman, A, Lyon, A, Ross, R |
|Journal||Journal of Physics: Conference Series |
|Issue||Track 7: Middleware, Monitoring and Accounting |
|Abstract||One of the main goals of the Dept. of Energy funded SciDAC-Data project is to analyze the more than 410,000 high energy physics datasets that have been collected, generated and dened over the past two decades by experiments using the Fermilab storage facilities. These datasets have been used as the input to over 5.6 million recorded analysis projects, for which detailed analytics have been gathered. The analytics and meta information for these datasets and analysis projects are being combined with knowledge of their part of the HEP analysis chains for major experiments to understand how modern computing and data delivery is being used.
We present the rst results of this project, which examine in detail how the CDF, D0, NOvA, MINERvA and MicroBooNE experiments have organized, classied and consumed petascale datasets to produce their physics results. The results include analysis of the correlations in dataset/le overlap, data usage patterns, data popularity, dataset dependency and temporary dataset consumption. The results provide critical insight into how workflows and data delivery schemes can be combined with dierent caching strategies to more eciently perform the work required to mine these large HEP data volumes and to understand the physics analysis requirements for the next generation of HEP computing facilities.
In particular we present a detailed analysis of the NOvA data organization and consumption model corresponding to their rst and second oscillation results (2014-2016) and the rst look at the analysis of the Tevatron Run II experiments. We present statistical distributions for the characterization of these data and data driven models describing their consumption.