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2005 IEEE International Conference on Cluster Computing Pub Date : 2005-09-01 DOI:10.1109/CLUSTR.2005.347077

T. Repantis, C. Antonopoulos, V. Kalogeraki, T. Papatheodorou

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引用次数: 2

摘要

软件dsm (SDSMs)是消息传递的一种有吸引力的替代方案，因为它们促进了集群的可编程性。然而，编程的方便性是以牺牲性能为代价的。尽管对驻留在远程节点内存中的数据的访问对程序员来说是透明的，但与本地访问相比，它们的延迟要高得多。因此，最好将数据移动到尽可能靠近最需要数据的节点。本文介绍了一种在基于家庭的SDSM系统中动态迁移内存页面的协议。在这些系统中，每个页面都有一个指定的主节点;然而，我们的协议允许大量修改页面的节点成为它的新家。新协议的目标是多写入器dsm，即允许多个节点并发修改同一页面的dsm。这个过程对应用程序程序员来说是动态和透明的。此外，它不假设特定的一致性协议。实验结果表明，我们的页面迁移协议减少了远程页面修改，降低了平均内存访问延迟，以及保持内存一致性的开销。最终用户的好处是应用程序性能的显著提高

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Case for Dynamic Page Migration in Multiple-Writer Software DSM Systems

Software DSMs (SDSMs) are an appealing alternative to message passing, since they facilitate the programmability of clusters. However the ease of programming comes at the expense of performance. Although accesses of data that reside to the memory of remote nodes are transparent to the programmer, they suffer from significantly higher latencies compared to local accesses. As a consequence, it is desirable to move data as close as possible to the nodes that need them most. In this paper we introduce a protocol for dynamically migrating memory pages in home-based SDSM systems. In these systems each page has a designated home node; yet our protocol allows a node that heavily modifies a page to become its new home. The new protocol targets multiple-writer DSMs, i.e. DSMs that allow multiple nodes to concurrently modify the same page. The process is dynamic and transparent to the applications programmer. Moreover, it does not assume a specific consistency protocol. Experimental results show that our page migration protocol reduces remote page modifications, decreases the average memory access latency, as well as the overhead for the preservation of memory consistency. The benefit for the end-user is a significant improvement in application performance

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2005 IEEE International Conference on Cluster Computing

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