C#中的并行计算 [英] Parllel Computing in c#

问题描述

我有一个顺序循环，如...

i have a sequential loop as...

for (int i = 0; i < 1000;i++ )
            {
                Console.WriteLine(i);
            }

而且此循环的执行时间约为t微秒.现在，我想使其与我的4核i5处理器并行.这样我可以减少执行时间..所以我写了这段代码...

and execution time for this loop is some t microsecond.now i want to make it parllel with my i5 processor of 4 cores. so that i can reduce the execution time for it.. so i had written this code...

int N=1000;
Parallel.For(0, N, delegate(int i) 
                {
                    Console.WriteLine(i);
                });

但这花费了比t更长的执行时间，请帮助我..::<

but this took execution time more than t ,, pls help me in this.. :(

推荐答案

我自己没有使用过Parallel，但是我建议Console.WriteLine(i);语句会使速度变慢，因为两者都在争用共享资源.

I have not used Parallel myself but I would suggest that the Console.WriteLine(i); statements will slow things down, as both will be contending for shared resources.

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