VME-5565反射內(nèi)存節(jié)點卡提供了一個高速、低延遲、確定的接口，允許多達256個獨立系統(tǒng)(節(jié)點)之間以高達170 Mbyte/s的速率共享數(shù)據(jù)。每個反射內(nèi)存板可以配置64mbyte或128mbyte的板載SDRAM。本地SDRAM為存儲的數(shù)據(jù)提供快速的讀訪問時間。寫入存儲在本地SDRAM中，并通過高速光纖數(shù)據(jù)路徑廣播到其他反射存儲器節(jié)點。節(jié)點之間的數(shù)據(jù)傳輸是軟件透明的，因此不需要I/O開銷。在峰值數(shù)據(jù)速率期間發(fā)送和接收fifo緩沖數(shù)據(jù)，以優(yōu)化處理器和總線性能，以保持高數(shù)據(jù)吞吐量。
網(wǎng)絡傳輸速率43mbyte /s(4字節(jié)包)~ 170mbyte /s(64字節(jié)包)
動態(tài)數(shù)據(jù)包大小，4 ~ 64字節(jié)的數(shù)據(jù)
最多256個節(jié)點
連接多模光纖可達300m，單模光纖可達10km
在一個節(jié)點上寫入內(nèi)存的數(shù)據(jù)也會寫入網(wǎng)絡中所有節(jié)點的內(nèi)存
高速，易于使用的光纖網(wǎng)絡(串行2.12 Gbaud)
VME傳輸速率40mb
64mbyte或128mbyte的SDRAM反射內(nèi)存

VMIVME-556

The VME-5565 Reflective Memory node card provides a high-speed, low latency, deterministic interface that allows data to be shared between up to 256 independent systems (nodes) at rates up to 170 Mbyte/s. Each Reflective Memory board can be configured with either 64 Mbyte or 128 Mbyte of onboard SDRAM. The local SDRAM provides fast Read access times to stored data. Writes are stored in local SDRAM and broadcast over a high speed fiber-optic data path to other Reflective Memory nodes. The transfer of data between nodes is software transparent, so no I/O overhead is required. Transmit and Receive FIFOs buffer data during peak data rates to optimize processor and bus performance to maintain high data throughput.
Network transfer rate of 43 Mbyte/s (4 byte packets) to 170 Mbyte/s (64 byte packets)
Dynamic packet size, 4 to 64 bytes of data
Up to 256 nodes
Connection with multimode fiber up to 300m, single-mode fiber up to 10km
Data written to memory in one node is also written to memory in all nodes on the network
High speed, easy to use fiber-optic network (2.12 Gbaud serially)
VME transfer rate 40 Mbytes
64 Mbyte or 128 Mbyte SDRAM Reflective Memory

VMIVME-556