对于垂直方向上的每个空格来说，管理程序都会采用 DMA 方式将自己的缓冲区读到 GPU 的内存中，然后将 GPU 的可视页刷新为与垂直空格信号同步的数据。
Every vertical blank, the hypervisor DMAs this buffer to the GPU memory, and then flips the GPU's visible page to the new data synchronously with the vertical blank signal.
举个看似平凡的例子，假设一只青蛙从无限大棋盘上一个方块的角落出发，以相同步长朝相同象限方向一再重复跳跃[3]。
For a seemingly trivial example, imagine a frog making repeated jumps of the same length in the same direction, starting from the corner of a square on an infinite checkerboard.
可以将Tivoli Directory Integrator配置为多方向提供，这样包含用户所提供的某些Profile更新的数据可以与源目录服务器和HR系统保持同步。
Tivoli directory Integrator may be configured as a multi-directional feed so data that certain Profile updates made by users can be synchronized back to the source directory server and the hr system.
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