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UPI is a low-latency coherent interconnect for scalable multiprocessor systems with a shared address space. It uses a directory-based home snoop coherency protocol with a transfer speed of up to 10.4 GT/s. Supporting processors typically have two or three UPI links.
InfiniBand (IB) is a computer networking communications standard used in high-performance computing that features very high throughput and very low latency.It is used for data interconnect both among and within computers.
The earliest academic publication of trace cache was "Trace Cache: a Low Latency Approach to High Bandwidth Instruction Fetching". [1] This widely acknowledged paper was presented by Eric Rotenberg, Steve Bennett, and Jim Smith at 1996 International Symposium on Microarchitecture (MICRO) conference.
Others expected that InfiniBand will keep offering a higher bandwidth and lower latency than what is possible over Ethernet. [17] The technical differences between the RoCE and InfiniBand protocols are: Link Level Flow Control: InfiniBand uses a credit-based algorithm to guarantee lossless HCA-to-HCA communication. RoCE runs on top of Ethernet.
In contrast to standard Ethernet according to IEEE 802.3 and Ethernet bridging according to IEEE 802.1Q, time is very important in TSN networks.For real-time communication with hard, non-negotiable time boundaries for end-to-end transmission latencies, all devices in this network need to have a common time reference and therefore, need to synchronize their clocks among each other.
The interconnect network for a shared memory multiprocessor system must have low latency and high bandwidth unlike other network systems, like local area networks (LANs) or internet [citation needed] for three reasons: Messages are relatively short as most messages are coherence protocol requests and responses without data.
Network Device Interface (NDI) is a software specification developed by the technology company NewTek.It enables high-definition video to be transmitted, received, and communicated over a computer network with low latency and high quality.
RDMA supports zero-copy networking by enabling the network adapter to transfer data from the wire directly to application memory or from application memory directly to the wire, eliminating the need to copy data between application memory and the data buffers in the operating system.