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I want to use Parallel.invoke. If i assign 20 parallel task, only 8 of then are run concurrently. My CPU is http://ark.intel.com/products/47925 and the reported number of threads is 8. I assume number of task can be run in parallel is related to the cpu number of threads. I dont want to create more task than the number of threads. How do i know the number of threads in c#? I tried query ParallelOptions.MaxDegreeOfParallelism and all i get is -1.
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So, in order to use Maximum Degree of Parallelism in C#, we need to create an instance of ParallelOptions class and we need to set the MaxDegreeOfParallelism properties to an integer number indicating the number of threads to execute the code.
WhenAll() method in . NET Core. This will upload the first file, then the next file. There is no parallelism here, as the “async Task” does not automatically make something run in in parallel.
C# supports two main models of parallelism: Data parallelism: where an operation is applied to each element in a collection. Task parallelism: where independent computations are executed in parallel.
Practically, when a program is executed in parallel, the hypothesis that the parallel program will run faster is not always satisfied. If the main goal of parallelizing a serial program is to obtain a faster run then the main criterion to be considered is the speedup gained from parallelization.
Parallel tasks are basically threads that can be shared. Because the number of active threads is limited by the number of logical processor cores that are available, a good guess would be to just take the number of logical cores available to the program.
Environment.ProcessorCount
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