Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Experiences with LHC Grid Computing and Distributed Analysis   In this presentation the experiences of the LHC experiments using grid
computing were presented with a focus on experience with distributed analysis.
After many years of development, preparation, exercises, and validation the LHC
(Large Hadron Collider) experiments are in operations. The computing
infrastructure has been heavily utilized in the first 6 months of data
collection. The general experience of exploiting the grid infrastructure for
organized processing and preparation is described, as well as the successes
employing the infrastructure for distributed analysis. At the end the expected
evolution and future plans are outlined.

25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom