Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards High Performance Relativistic Electronic Structure Modelling:
  The EXP-T Program Package   Modern challenges arising in the fields of theoretical and experimental
physics require new powerful tools for high-precision electronic structure
modelling; one of the most perspective tools is the relativistic Fock space
coupled cluster method (FS-RCC). Here we present a new extensible
implementation of the FS-RCC method designed for modern parallel computers. The
underlying theoretical model, algorithms and data structures are discussed. The
performance and scaling features of the implementation are analyzed. The
software developed allows to achieve a completely new level of accuracy for
prediction of properties of atoms and molecules containing heavy and superheavy
nuclei.

23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th