The Virtual Time Machine

一种加速大规模并行计算的新结构 研究离散事件仿真问题。 相比 需要程序员或编译器执行的现有机器 编译时的数据依赖分析，虚拟时间机器 (VTM)在运行时执行此任务。 特别是，VTM硬件 自动检测违反数据独立性的情况并从中恢复 当它们发生时，限制。 一个复杂的记忆系统 使用空间坐标和时间坐标两者来寻址， 有效落实这一机制。 动态负载 平衡/调度策略用于最小化 依赖性错误。

A novel parallel computer architecture for speeding up large-scale discrete event simulation problems is investigated. In contrast to existing machines that require the programmer or compiler to perform data dependence analysis at compile time, the VIRTUAL TIME MACHINE (VTM) performs this task at runtime. In particular, the VTM hardware automatically detects and recovers from violations of data independence constraints as they occur. A sophisticated memory system that is addressed using both a spatial and a temporal coordinate is used to efficiently implement this mechanism. Dynamic load balancing/scheduling policies are used to minimize the frequency of dependency errors.