| Issue |
EPJ Web Conf.
Volume 214, 2019
23rd International Conference on Computing in High Energy and Nuclear Physics (CHEP 2018)
|
|
|---|---|---|
| Article Number | 04028 | |
| Number of page(s) | 7 | |
| Section | T4 - Data handling | |
| DOI | https://doi.org/10.1051/epjconf/201921404028 | |
| Published online | 17 September 2019 | |
https://doi.org/10.1051/epjconf/201921404028
Remote data access in computational jobs on the ATLAS data grid
1
CERN,
Geneva 23,
Switzerland
2
University of Vienna,
Vienna,
Austria
* Corresponding author: volodimir.begy@cern.ch
Published online: 17 September 2019
This work describes the technique of remote data access from computational jobs on the ATLAS data grid. In comparison to traditional data movement and stage-in approaches it is well suited for data transfers which are asynchronous with respect to the job execution. Hence, it can be used for optimization of data access patterns based on various policies. In this study, remote data access is realized with the HTTP and WebDAV protocols, and is investigated in the context of intra- and inter-computing site data transfers. In both cases, the typical scenarios for application of remote data access are identified. The paper also presents an analysis of parameters influencing the data goodput between heterogeneous storage element - worker node pairs on the grid.
© The Authors, published by EDP Sciences, 2019
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