The Experts below are selected from a list of 132 Experts worldwide ranked by ideXlab platform
Zhang Xiaotong - One of the best experts on this subject based on the ideXlab platform.
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research and implementation of Transparent Bridge supports spanning tree protocol in hfc
Computer Engineering, 2007Co-Authors: Zhang XiaotongAbstract:This paper presents a design of Transparent Bridge which can connect cable network and Ethernet in HFC network.The Bridge is designed based on DOCSIS and supports MAC address learning,MAC frame filter and forwarding on MAC layer.The spanning tree protocol is employed in order to deactivate redundant network connections logically and reduce the topological loops to a tree topology consequently solve the problems of data feedback which result from the topological loops in HFC.The design has been successfully applied to the bidirectional system platform for HDTV,which consists of PHY chip and MAC chip developed in the authors’ lab.The design can effectually deactivate network redundancy and prevent the generation of broadcast storm.
W. Peng - One of the best experts on this subject based on the ideXlab platform.
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research on the net Transparent Bridge technology based single nc machine s network integration
Key Engineering Materials, 2008Co-Authors: Jiangang Zhang, W. PengAbstract:In the face of the development trends of NC machine’s networking, this paper presents a new method of transferring NC program based on net Transparent Bridge technology. By analyzing the principle of serial port communication between NC machine tool and computer, this paper demonstrates the fundamental of net Transparent Bridge, topology structure, software and hardware realizing of communication function. The single NC machine networking in field showed that the preset qualifications can be reached, which makes the network integrations of existing single NC machines possible.
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Research on the Net Transparent Bridge Technology Based Single NC Machine’s Network Integration
Key Engineering Materials, 2008Co-Authors: Jiangang Zhang, W. PengAbstract:In the face of the development trends of NC machine’s networking, this paper presents a new method of transferring NC program based on net Transparent Bridge technology. By analyzing the principle of serial port communication between NC machine tool and computer, this paper demonstrates the fundamental of net Transparent Bridge, topology structure, software and hardware realizing of communication function. The single NC machine networking in field showed that the preset qualifications can be reached, which makes the network integrations of existing single NC machines possible.
Kwangho Cha - One of the best experts on this subject based on the ideXlab platform.
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developing an openshmem model over a switchless pcie non Transparent Bridge interface
International Parallel and Distributed Processing Symposium, 2019Co-Authors: Seungho Lim, Kiwoong Park, Kwangho ChaAbstract:OpenSHMEM is an emerging parallel programming model in distributed systems that supports partitioned global address space (PGAS). It was originally developed for Cray systems, and it was subsequently adopted by numerous vendors of the InfiniBand and Ethernet network interfaces, since most high-performance computing (HPC) systems deploy switch-based interconnect networks using InfiniBand and Ethernet technologies. Recently, Peripheral Component Interconnect Express (PCIe) has become one of the most promising candidates for deploying cost-effective popular HPC systems because of its low cost and powerful features, as well as the Non-Transparent Bridge(NTB) technology (interconnect interface for PCIe). However, there is little work done on implementing the OpenSHMEM library for PCIe systems. Herein, we introduce a prototype of a switchless interconnect network with PCIe NTB. In our switchless interconnect network system, the computing nodes are interconnected via the PCIe NTB interface. Based on the PCIe NTB interconnect network, we implemented the OpenSHMEM programming interface to support the PGAS mechanism for PCIe NTB interconnect networks. Our design and implementation of an OpenSHMEM programming model via PCIe NTB shows that is feasible and possible to have a PCIe-based, cost-effective, high performance interconnect network in a high-performance programming model.
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Design and implementation of initial OpenSHMEM on PCIe NTB based cloud computing
Cluster Computing, 2019Co-Authors: Cheol Shim, Kwangho Cha, Min ChoiAbstract:Cloud computing services are provided by key roles of data centers in which homogeneous and heterogeneous computation nodes are connected by high speed interconnection network. The rapid development of cloud-based services and applications has made data center networks more difficult. The PCI Express is a widely used system bus technology that connects processors and peripheral I/O devices. So, the PCI Express is regarded as a de-facto standard in system area interconnection network. It is currently validating the possibility of using PCI Express as a system interconnection network in areas such as high-performance computers and cluster/cloud computing. With the development of PCI Express non-Transparent Bridge (NTB) technology, the PCI Express has become available as a system interconnection network. NTB allows two PCI Express subsystems to be interconnected and, if necessary, isolated from each other. Partitioned global address space (PGAS) is one of the shared address space programming models. Due to the recent spread of multicore processors, PGAS has been attracting attention as a parallel computing framework. We make use of the PCI Express NTB to realize the PGAS shared address space model. In this paper, we designed and implemented the interconnection network using PCI Express x8 using a RDK, the PEX8749 based PCI Express evaluation board. We performed some Openshmem applications from Github to verify the accuracy of our initial OpenSHMEM API implementation.
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IPDPS Workshops - Developing an OpenSHMEM Model Over a Switchless PCIe Non-Transparent Bridge Interface
2019 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), 2019Co-Authors: Seungho Lim, Kiwoong Park, Kwangho ChaAbstract:OpenSHMEM is an emerging parallel programming model in distributed systems that supports partitioned global address space (PGAS). It was originally developed for Cray systems, and it was subsequently adopted by numerous vendors of the InfiniBand and Ethernet network interfaces, since most high-performance computing (HPC) systems deploy switch-based interconnect networks using InfiniBand and Ethernet technologies. Recently, Peripheral Component Interconnect Express (PCIe) has become one of the most promising candidates for deploying cost-effective popular HPC systems because of its low cost and powerful features, as well as the Non-Transparent Bridge(NTB) technology (interconnect interface for PCIe). However, there is little work done on implementing the OpenSHMEM library for PCIe systems. Herein, we introduce a prototype of a switchless interconnect network with PCIe NTB. In our switchless interconnect network system, the computing nodes are interconnected via the PCIe NTB interface. Based on the PCIe NTB interconnect network, we implemented the OpenSHMEM programming interface to support the PGAS mechanism for PCIe NTB interconnect networks. Our design and implementation of an OpenSHMEM programming model via PCIe NTB shows that is feasible and possible to have a PCIe-based, cost-effective, high performance interconnect network in a high-performance programming model.
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switchless interconnect network with pcie non Transparent Bridge interface
2018Co-Authors: Sanggyum Kim, Seungho Lim, Yangwoo Lee, Kwangho ChaAbstract:HPC systems are one of the important role to run a lot of high-performance applications. Conventionally, HPC deploys switch-based interconnect networks to connect host nodes with high cost and high performance technologies such as Infiniband and Ethernet. However, high cost interconnection switches may not be required by desired cost-effective HPC system. To give cost-effective interconnect network interface, we introduce prototype of switchless interconnect network with PCIe NTB to give cost-effective interconnect network for HPC systems. In the prototyped system, computing nodes are connected to each other via PCIe NTB interface constructing switchless interconnect network such as ring or 2d mesh network. Also, we have implemented prototyped data sharing mechanism on the switchless interconnect network system. The designed switchless interconnect network system is cost-effective as well as it provides competitive data transferring bandwidth within the interconnect network.
Jiangang Zhang - One of the best experts on this subject based on the ideXlab platform.
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research on the net Transparent Bridge technology based single nc machine s network integration
Key Engineering Materials, 2008Co-Authors: Jiangang Zhang, W. PengAbstract:In the face of the development trends of NC machine’s networking, this paper presents a new method of transferring NC program based on net Transparent Bridge technology. By analyzing the principle of serial port communication between NC machine tool and computer, this paper demonstrates the fundamental of net Transparent Bridge, topology structure, software and hardware realizing of communication function. The single NC machine networking in field showed that the preset qualifications can be reached, which makes the network integrations of existing single NC machines possible.
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Research on the Net Transparent Bridge Technology Based Single NC Machine’s Network Integration
Key Engineering Materials, 2008Co-Authors: Jiangang Zhang, W. PengAbstract:In the face of the development trends of NC machine’s networking, this paper presents a new method of transferring NC program based on net Transparent Bridge technology. By analyzing the principle of serial port communication between NC machine tool and computer, this paper demonstrates the fundamental of net Transparent Bridge, topology structure, software and hardware realizing of communication function. The single NC machine networking in field showed that the preset qualifications can be reached, which makes the network integrations of existing single NC machines possible.
M Gerla - One of the best experts on this subject based on the ideXlab platform.
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brouter the Transparent Bridge with shortest path in interconnected lans
Local Computer Networks, 1991Co-Authors: Yingdar Lin, M GerlaAbstract:Transparency is a popular feature in a distributed system where users can access any local or remote resources just as if they were local. The paper proposes a protocol which combines the features of transparency and shortest path. The result is a Bridge which supports self learning and distributed routing computation. Since this Bridge has all routing facilities as a router, it is called brouter (i.e. Bridge+router). Brouters are compared with current Bridge schemes. Also, performance aspects of the protocol are examined. >
