human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "a lightweight communication library for distributed computing"
  Abstract: We present MPWide, a platform-independent communication library for performing message passing between computers. Our library allows coupling of several local message passing interface (MPI) applications through a long-distance network and is specifically optimized for such communications. The implementation is deliberately kept lightweight and platform independent, and the library can be installed and used without administrative privileges. The only requirements are a C++ compiler and at least one open port to a wide-area network on each site. In this paper we present the library, describe the user interface, present performance tests and apply MPWide in a large-scale cosmological N-body simulation on a network of two computers, one in Amsterdam and the other in Tokyo.

Connected through hyperedge HE-1 (induced by source paper "flexible composition and execution of high performance high fidelity multiscale biomedical simulations"):
  with members:
    - "impact of blood rheology on wall shear stress in a model of the middle cerebral artery"
    - "coalesced communication a design pattern for complex parallel scientific software"
    - "choice of blood rheology model has minor impact on computational assessment of shear stress mediated vascular risk"
    - "survey of multiscale and multiphysics applications and communities"
    - "high performance gravitational n body simulations on a planet wide distributed supercomputer"

Connected through hyperedge HE-2 (induced by source paper "mpwide a light weight library for efficient message passing over wide area networks"):
  with members:
    - "flexible composition and execution of high performance high fidelity multiscale biomedical simulations"
    - "high performance distributed multi model multi kernel simulations a case study in jungle computing"
    - "high performance cosmological simulations on a grid of supercomputers"
    - "high performance gravitational n body simulations on a planet wide distributed supercomputer"

Connected through hyperedge HE-3 (induced by source paper "high performance cosmological simulations on a grid of supercomputers"):
  with members:
    - "high performance gravitational n body simulations on a planet wide distributed supercomputer"
    - "mpich g2 a grid enabled implementation of the message passing interface"

Connected through hyperedge HE-4 (induced by source paper "high performance gravitational n body simulations on a planet wide distributed supercomputer"):
  with members:
    - "high performance direct gravitational n body simulations on graphics processing units"

Question: Please tell me which class the center node 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)