HPVFS的缓存系统包括元数据缓存、计算节点数据缓存和存储节点缓存三种，旨在实现元数据和数据的高速访问。
Cache system is one of these strategies, which realize rapid access of metadata and data. The cache system of HPVFS consists of metadata cache, compute nodes cache and storage nodes cache.
远程客户端协调对本地和远程输出文件系统应用访问来允许高速缓存的输出文件系统数据的访问。
Application access to locally and remotely exported file systems is coordinated to allow caching data for exported file systems accessed by remote clients.
在此前提下，采用高速数据传输技术成为必然，DMA(直接存储器访问)技术就是较理想的解决方案之一，能够满足信息处理实时性和准确性的要求。
DMA (Direct Memory Access) technology is one of the best solutions which could meet the requirements of real-time and accuracy for information processing.
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