costs approximation 中文意思是什麼
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2 cost estimating ? developing an approximation ( estimate ) of the costs of the resources needed to complete project activities
費用估算編制完成項目工序所必須的資源費用的估計。 -
Such as the models assume that the communication times between all process pairs ( a sending process and a receiving process ) in the computation are equal. it is a reasonable approximation when the entire computation is performed on a single machine. but when the computation is executed on a grid environment, it is not reasonable for communication costs over different communication links is differ
當所有的計算任務都在單獨一臺機器上執行時，這些發送接收進程對之間的通信時間是近似相等的；但是當計算是在一個網格環境上運行時，由於網格中通過不同通信連接的通信時間是不一樣的，所以這些發送接收進程對之間的通信時間是不可能近似相等的。
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