在并行代码内并行 [英] parallel within parallel code

问题描述

一旦我将任务划分为4个独立的任务，并使它们并行运行.是否可以进一步使每个任务并行运行?(例如，每个任务，每个循环都有很多-可以实现为并行代码)

Once I have divided the tasks to 4 independent tasks and make them run in parallel. Is it possible to further make each task run in parallel ? (says, each task, there are lots of for each loop - that could be implemented as parallel code)

推荐答案

您当然可以，但是尽管如此，您必须考虑多个因素

You have to take into account multiple factors though

• 迭代的大小是多少(越多越好)
• 您的CPU可以处理多少个并发线程

• 处理器中的内核数量

• What's the size of your iterations (The more, the better)
• How many concurrent threads can your CPU handle

• The amount of cores in your processor

Parallel.For(0, length1, i =>
{
    Parallel.For(0, length2, j =>
    {           
        Console.WriteLine(i * j);
    });
});

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