整个过程使用Cg语言编写顶点程序和片段程序来实现。
It's implemented by vertex programs and fragment programs in Cg language.
计算是结构化的，以有向图的方式进行：程序是图形顶点，而通道则作为图的边。
The computation is structured as a directed graph: programs are graph vertices, while the channels are graph edges.
压力测试：研究在任务活动达到顶点时程序的响应。
Stress test: Study the program's response at the peak bursts of activity.
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