直接内存通信技术及其网卡原型研究
发布时间：2018-10-09 17:23
【摘要】：针对基于PCI等传统I/O总线的网络I/O方式中网络通信性能受到相应总线接口限制的问题,提出了直接内存通信技术DMC(Direct Memory Communication,DMC)。使用此技术的DMC网卡可直接插入内存插槽中,DMC网卡上的存储空间被系统预留作为通信专用区,并使用与普通内存相同的方法进行管理和访问。待发送的数据使用写普通内存的方法直接写入DMC网卡的通信专用区中,对DMC网卡的通信专用区中收到的网络数据,用户可使用读普通内存的方法获得,从而实现了计算机内存之间的直接通信。因此,DMC技术使网络通信速度不受PCI等传统I/O总线的限制,省略了传统通信机制中网卡设备和内存之间的数据拷贝工作,具有通信速率高、通信延迟小及操作简单的特点。在高速光纤通道交换网中设计了DMC网卡原型,证明了DMC技术的正确性和可行性。
[Abstract]:Aiming at the problem that the performance of network communication is limited by the corresponding bus interface in the traditional I / O bus mode based on PCI and other traditional I / O bus, a direct memory communication technology (DMC (Direct Memory Communication,DMC) is proposed. The DMC card with this technique can be directly inserted into the memory slot and the storage space on the DMC network card is reserved as a communication private area and managed and accessed in the same way as normal memory. The data to be sent is written directly into the communication private area of the DMC network card by the method of writing ordinary memory. For the network data received in the communication private area of the DMC network card, the user can use the method of reading ordinary memory to obtain the data. Thus realized the direct communication between the computer memory. Therefore, the network communication speed is not limited by the traditional I / O bus such as PCI, and the data copy between the network card device and the memory is omitted in the traditional communication mechanism. It has the characteristics of high communication rate, small communication delay and simple operation. The prototype of DMC network card is designed in high speed fiber channel switching network, which proves the correctness and feasibility of DMC technology.
【作者单位】： 中航一集团第六三一研究所;西北工业大学计算机学院;
【分类号】：TP334.7
[Abstract]:Aiming at the problem that the performance of network communication is limited by the corresponding bus interface in the traditional I / O bus mode based on PCI and other traditional I / O bus, a direct memory communication technology (DMC (Direct Memory Communication,DMC) is proposed. The DMC card with this technique can be directly inserted into the memory slot and the storage space on the DMC network card is reserved as a communication private area and managed and accessed in the same way as normal memory. The data to be sent is written directly into the communication private area of the DMC network card by the method of writing ordinary memory. For the network data received in the communication private area of the DMC network card, the user can use the method of reading ordinary memory to obtain the data. Thus realized the direct communication between the computer memory. Therefore, the network communication speed is not limited by the traditional I / O bus such as PCI, and the data copy between the network card device and the memory is omitted in the traditional communication mechanism. It has the characteristics of high communication rate, small communication delay and simple operation. The prototype of DMC network card is designed in high speed fiber channel switching network, which proves the correctness and feasibility of DMC technology.
【作者单位】： 中航一集团第六三一研究所;西北工业大学计算机学院;
【分类号】：TP334.7
【参考文献】
相关期刊论文 前3条
1 张晓彤;王景存;王沁;刘兰军;;基于DDR内存总线的高速网络接入技术[J];北京科技大学学报;2007年11期
2 雷艳静;魏建军;王s，
本文编号：2260151
本文链接：https://www.wllwen.com/kejilunwen/jisuanjikexuelunwen/2260151.html
