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 "a tuned and scalable fast multipole method as a preeminent algorithm for exascale systems"):
  Abstract: Among the algorithms that are likely to play a major role in future exascale computing, the fast multipole method (fmm) appears as a rising star. Our previous recent work showed scaling of an fmm on gpu clusters, with problem sizes of the order of billions of unknowns. That work led to an extremely parallel fmm, scaling to thousands of gpus or tens of thousands of cpus. This paper reports on a campaign of performance tuning and scalability studies using multi-core cpus, on the Kraken supercomputer. All kernels in the fmm were parallelized using OpenMP, and a test using 107 particles randomly distributed in a cube showed 78% efficiency on 8 threads. Tuning of the particle-to-particle kernel using single instruction multiple data (SIMD) instructions resulted in 4 A speed-up of the overall algorithm on single-core tests with 103-107 particles. Parallel scalability was studied in both strong and weak scaling. The strong scaling test used 108 particles and resulted in 93% parallel efficiency on 2048 processes for the non-SIMD code and 54% for the SIMD-optimized code (which was still 2 A faster). The weak scaling test used 106 particles per process, and resulted in 72% efficiency on 32,768 processes, with the largest calculation taking about 40 seconds to evaluate more than 32 billion unknowns. This work builds up evidence for our view that fmm is poised to play a leading role in exascale computing, and we end the paper with a discussion of the features that make it a particularly favorable algorithm for the emerging heterogeneous and massively parallel architectural landscape. The code is open for unrestricted use under the MIT license.

Includes members:
  Member "petascale turbulence simulation using a highly parallel fast multipole method on gpus":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "fast multipole networks")
  Member "biomolecular electrostatics using a fast multipole bem on up to 512 gpus and a billion unknowns":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "communication reducing algorithms for distributed hierarchical n body problems with boundary distributions")
  Member "petfmm a dynamically load balancing parallel fast multipole library":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "extreme scale fmm accelerated boundary integral equation solver for wave scattering")

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.NA(Numerical Analysis)