The Architecture of a Next Gereration Hultimedia Server

下一代多媒体服务器的架构

基本信息

批准号：
10558045
负责人：
TOMITA Shinji
金额：
$ 8.13万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

项目摘要

The project consists of following three themes :1. ReVolver/C40: a volume rendering architectureWe developed a prototype of the ReVolver/C40 volume rendering architecture as a visualization mechanism for the next generation multimedia server. Volume rendering, which is a scheme to directly visualize volume data, is hard to execute in real-time because of bank conflict on the memory. ReVolver/C40 has a memory system free from bank conflict. The evaluation result of developed prototype shows that ReVolver/C40 can render about six frames per second.2. A hybrid processor architecture between control-and data-drivenWe proposed Dualflow as a processor architecture for the next generation multimedia server. The architecture does not define registers and the instructions pass operands directly. Superscalars implements the instruction scheduling logic with a CAM, and the logic may become the critical path of the system. Dualflow can replace the CAM with a RAM. We developed a compiler and evaluated it with the SPEC benchmark. The result shows it inserts a lot of extra instructions, and needs another optimization to remove them.3. High-speed Java bytecode executionHigh-speed execution of Java bytecode is necessary for the next generation multimedia server. We proposed a Value Look-aside Buffer. Value Look-aside Buffer memorizes pairs of pre-and post-states of the past executions. When the machine states matches one of the memorized pre-states, it can eliminate the execution just by replacing it with the post-state. The results of the simulation study shows it can speeds-up about 47.1% at best.

该项目包括以下三个主题：1。 Revolver/C40：卷渲染架构We开发了Revolver/C40卷渲染架构的原型，作为下一代多媒体服务器的可视化机制。音量渲染是直接可视化卷数据的方案，由于内存上的银行冲突，很难实时执行。 Revolver/C40的内存系统没有银行冲突。开发原型的评估结果表明，左轮手/C40每秒可呈现约6帧。2。控制和数据驱动的Weed DualFlow作为下一代多媒体服务器的处理器体系结构之间的混合处理器体系结构。该体系结构并未定义寄存器，指令直接通过操作数。超级标准通过CAM实现指令调度逻辑，逻辑可能成为系统的关键路径。双流可以用RAM替换CAM。我们开发了一个编译器，并使用规格基准进行了评估。结果表明它插入了很多额外的说明，并且需要另一种优化才能删除它们。3。下一代多媒体服务器必须使用高速Java字节码executionHigh-Speed执行Java字节码。我们提出了一个价值的外观缓冲区。价值查看缓冲区记住过去执行的前后验收的对。当机器状态匹配记忆的预状态之一时，它只能通过用后期替换来消除执行。模拟研究的结果表明，它最多可以加速约47.1％。