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RDMA 기반 HDFS를 위한 PCIe NTB Interconnect Network의 JNI 인터페이스 설계 및 구현
지민재(Min-Jae Ji),고병현(Byeong-Hyun Ko),신동렬(Dong-Ryeol Sin),김성현(Seong-Hyun Kim),임승호(Seung-Ho Lim) 한국정보기술학회 2021 한국정보기술학회논문지 Vol.19 No.2
In the HPC system, which consists of a cluster by connecting multiple computing nodes, the performance of the interconnection network greatly affects the performance of the entire system, and for high performance, RDMA(Remote Network) in the interconnection network with PCIe interfaces such as Infiniband and PCIe NTB. DMA) data transmission is widely used. Meanwhile, recently, as the performance gap between the VM-based language Java and the compilation-based language that was mainly used in HPC has been gradually resolved, HPC systems implemented with Java such as HDFS (Hadoop Distributed File System) are increasing. The PCIe NTB interconnect device, which is an interconnect network interface based on the PCIe standard, was developed, but Java does not provide an interface to directly use RDMA. In this paper, the RDMA communication provided as Native C API in the PCIe NTB-based interconnect network of Dolphin is implemented in Java through JNI and compared with Ethernet Interface to consider the performance in practical use.