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首页> 外文会议>Proceedings of the 9th international conference for young computer scientists (ICYCS 2008) >A GPDMA-based shared I/O solution for CC-NUMA system
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A GPDMA-based shared I/O solution for CC-NUMA system

机译：CC-NUMA系统的基于GPDMA的共享I / O解决方案

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摘要

A distributed shared I/O solution for CC-NUMA (Cache Coherent Non-Uniform Memory Access) system is introduced. To improve the remote I/O performance, GPDMA (Globally Parallel Direct Memory Access) technique is introduced, enable I/O device to directly read/write not only the local memory, but also remote distributed shared memory (DSM). Taking advantage of GPDMA, file system is able to use optimized data transfer protocol to bypass the storage server Cache during the data transfers. Different from traditional RDMA communication technique, GPDMA technique minimizes the number of I/O specific messages between the nodes, avoids data copy from server Cache to client Cache. The data consistency between memory and its Cache is guaranteed by hardware. SGP6, a 2048-processor CC-NUMA supercomputer and CC-GPFS, a global parallel file system have been developed. The evaluation results show that the GPDMA-based distributed shared I/O Solution improve the I/O performance greatly.
机译：介绍了一种用于CC-NUMA（缓存一致性非统一内存访问）系统的分布式共享I / O解决方案。为了提高远程I / O性能，引入了GPDMA（全局并行直接内存访问）技术，使I / O设备不仅可以直接读取/写入本地内存，还可以直接读取/写入远程分布式共享内存（DSM）。利用GPDMA，文件系统能够使用优化的数据传输协议在数据传输过程中绕过存储服务器缓存。与传统的RDMA通信技术不同，GPDMA技术最大程度地减少了节点之间I / O特定消息的数量，避免了从服务器缓存到客户端缓存的数据复制。硬件和内存之间的数据一致性由硬件保证。已经开发了具有2048个处理器的CC-NUMA超级计算机SGP6和一个全局并行文件系统CC-GPFS。评估结果表明，基于GPDMA的分布式共享I / O解决方案大大提高了I / O性能。

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