A Parallel Java^TM Virtual Machine

概要

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This article describes how a Java virtual machine can make use of the inherent concurrency of Java programs on a massively parallel machine, NEC's Cenju-3. An application written with the Java programming language has two different ways to introduce concurrency : threads and process. While it is possible to introduce parallelism by using processes, the granularity is likely to be coarse and applications will have to be written specially for parallel machines or else lack flexibility, scalability and have a very low degree of parallelism. On the other hand, while most Java applications are already highly multi-threaded, the problem of locality of objects shared between threads makes it difficult to take advantage of the availability of many processors. In this paper, we address this problem by describing the implementation of a parallel Java virtual machine on Cenju-3, illustrating the use of low-level communications and remote DMA accesses in implementing release consistency(RC) for distributed shared objects.
一般社団法人情報処理学会の論文
1996-09-04