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: "parallel programming model for the epiphany many core coprocessor using threaded mpi"
  Abstract: The Adapteva Epiphany many-core architecture comprises a 2D tiled mesh Network-on-Chip (NoC) of low-power RISC cores with minimal uncore functionality. It offers high computational energy efficiency for both integer and floating point calculations as well as parallel scalability. Yet despite the interesting architectural features, a compelling programming model has not been presented to date. This paper demonstrates an efficient parallel programming model for the Epiphany architecture based on the Message Passing Interface (MPI) standard. Using MPI exploits the similarities between the Epiphany architecture and a conventional parallel distributed cluster of serial cores. Our approach enables MPI codes to execute on the RISC array processor with little modification and achieve high performance. We report benchmark results for the threaded MPI implementation of four algorithms (dense matrix-matrix multiplication, N-body particle interaction, a five-point 2D stencil update, and 2D FFT) and highlight the importance of fast inter-core communication for the architecture.

Connected through hyperedge HE-1 (induced by source paper "an openshmem implementation for the adapteva epiphany coprocessor"):
  with members:
    - "implementing openshmem for the adapteva epiphany risc array processor"
    - "advances in run time performance and interoperability for the adapteva epiphany coprocessor"

Connected through hyperedge HE-2 (induced by source paper "bulk synchronous pseudo streaming algorithms for many core accelerators"):
  with members:
    - "sampling in space restricted settings"
    - "kickstarting high performance energy efficient manycore architectures with epiphany"

Connected through hyperedge HE-3 (induced by source paper "generation of the single precision blas library for the parallella platform with epiphany co processor acceleration using the blis framework"):
  with members:
    - "programming the adapteva epiphany 64 core network on chip coprocessor"
    - "kickstarting high performance energy efficient manycore architectures with epiphany"

Connected through hyperedge HE-4 (induced by source paper "implementing openshmem for the adapteva epiphany risc array processor"):
  with members:
    - "kickstarting high performance energy efficient manycore architectures with epiphany"

Connected through hyperedge HE-5 (induced by source paper "advances in run time performance and interoperability for the adapteva epiphany coprocessor"):
  with members:
    - "kickstarting high performance energy efficient manycore architectures with epiphany"

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)