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 "ensemble toolkit scalable and flexible execution of ensembles of tasks"):
  Abstract: There are many science applications that require scalable task-level parallelism and support for flexible execution and coupling of ensembles of simulations. Most high-performance system software and middleware, however, are designed to support the execution and optimization of single tasks. Motivated by the missing capabilities of these computing systems and the increasing importance of task-level parallelism, we introduce the Ensemble toolkit which has the following application development features: (i) abstractions that enable the expression of ensembles as primary entities, and (ii) support for ensemble-based execution patterns that capture the majority of application scenarios. Ensemble toolkit uses a scalable pilot-based runtime system that decouples workload execution and resource management details from the expression of the application, and enables the efficient and dynamic execution of ensembles on heterogeneous computing resources. We investigate three execution patterns and characterize the scalability and overhead of Ensemble toolkit for these patterns. We investigate scaling properties for up to O(1000) concurrent ensembles and O(1000) cores and find linear weak and strong scaling behaviour.

Includes members:
  Member "extasy scalable and flexible coupling of md simulations and advanced sampling techniques":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "radical cybertools middleware building blocks for scalable science")
  Member "repex a flexible framework for scalable replica exchange molecular dynamics simulations":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "radical cybertools middleware building blocks for scalable science")
  Member "radical pilot scalable execution of heterogeneous and dynamic workloads on supercomputers":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "evaluation of pilot jobs for apache spark applications on hpc clusters")
  Member "integrating abstractions to enhance the execution of distributed applications":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "radical cybertools middleware building blocks for scalable science")

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)