human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "walberla a block structured high performance framework for multiphysics simulations"):
  Abstract: Programming current supercomputers efficiently is a challenging task. Multiple levels of parallelism on the core, on the compute node, and between nodes need to be exploited to make full use of the system. Heterogeneous hardware architectures with accelerators further complicate the development process. waLBerla addresses these challenges by providing the user with highly efficient building blocks for developing simulations on block-structured grids. The block-structured domain partitioning is flexible enough to handle complex geometries, while the structured grid within each block allows for highly efficient implementations of stencil-based algorithms. We present several example applications realized with waLBerla, ranging from lattice Boltzmann methods to rigid particle simulations. Most importantly, these methods can be coupled together, enabling multiphysics simulations. The framework uses meta-programming techniques to generate highly efficient code for CPUs and GPUs from a symbolic method formulation. To ensure software quality and performance portability, a continuous integration toolchain automatically runs an extensive test suite encompassing multiple compilers, hardware architectures, and software configurations.

Includes members:
  Member "a modular and extensible software architecture for particle dynamics":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "role oriented code generation in an engine for solving hyperbolic pde systems")
  Member "lattice boltzmann benchmark kernels as a testbed for performance analysis":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "lbmpy a flexible code generation toolkit for highly efficient lattice boltzmann simulations")
  Member "extreme scale block structured adaptive mesh refinement":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a modular and extensible software architecture for particle dynamics")
  Member "dynamic load balancing techniques for particulate flow simulations":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a modular and extensible software architecture for particle dynamics")
  Member "the maximum dissipation principle in rigid body dynamics with inelastic impacts":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a systematic comparison of dynamic load balancing algorithms for massively parallel rigid particle dynamics")
  Member "a local parallel communication algorithm for polydisperse rigid body dynamics":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "a modular and extensible software architecture for particle dynamics")
  Member "a comparative study of fluid particle coupling methods for fully resolved lattice boltzmann simulations":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "dynamic load balancing techniques for particulate flow simulations")
  Member "a scalable and extensible checkpointing scheme for massively parallel simulations":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "adaptive control in rollforward recovery for extreme scale multigrid")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DC(Distributed, Parallel, and Cluster Computing)