Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperloop -- The ALICE analysis train system for Run 3   ALICE analyses mostly deal with large datasets using the distributed Grid
infrastructure. In LHC running periods 1 and 2, ALICE developed a system of
analysis trains (so-called $"$LEGO trains$"$) that allowed the user to
configure analysis tasks (called wagons) that run on the same data. The LEGO
train system builds upon existing tools: the ALICE analysis framework as well
as the Grid submission and monitoring infrastructure. This centralized system
improved the resource utilization and provided a graphical user interface (UI),
in addition to bookkeeping functionalities. Currently, 90$\%$ of ALICE analyses
use the train system. The ongoing major upgrade for LHC Run 3 will enable the
experiment to cope with an increase of Pb-Pb collision data of two orders of
magnitude compared to the Run 1 and 2 data-taking periods. In order to process
this unprecedented data sample, a new computing model has been implemented, the
Online-Offline Computing System (O$^2$). Analysis trains will also be the main
workhorse for analysis in Run 3: a new infrastructure, Hyperloop, is being
developed based on the successful concept of the LEGO trains. The Hyperloop
train system includes a different and improved UI using modern responsive web
tools, bookkeeping, instantaneous automatic testing, and the production of
derived skimmed data. So far, about 800 Hyperloop trains have been successfully
submitted to the Grid and ALICE analysis facilities using converted Run 2 data.
An overview of the ALICE train system concept is given, highlighting the
improvements of the new Hyperloop framework for analysis in Run 3.

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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: gr-qc