What’s the opposite of “embarrassingly parallel”?
Inherently sequential. Example: The number of women will not reduce the length of pregnancy.
Inherently sequential. Example: The number of women will not reduce the length of pregnancy.
What affects the runtime of guided scheduling? There are three effects to consider: 1. Load balance The whole point of dynamic/guided scheduling is to improve the distribution of work in the case where not each loop iteration contains the same amount of work. Fundamentally: schedule(dynamic, 1) provides optimal load balancing dynamic, k will always have …
Probably the most important difference between the Parallel Extensions and regular threading is the control flow. A thread, created using new Thread(…) or ThreadPool.QueueUserWorkItem will terminate at a completely indeterminate point in time. If you write this code: ThreadPool.QueueUserWorkItem(() => { Thread.Sleep(1000); Console.WriteLine(“Work Finished”); }); Console.WriteLine(“Item Queued”); The text Item Queued will appear right away, …
As suggested by Jon Skeet, the Task.IsCompleted is the better option. According to MSDN: IsCompleted will return true when the task is in one of the three final states: RanToCompletion, Faulted, or Canceled. But it appears to return true in the TaskStatus.WaitingForActivation state too.
You need to use forEachOrdered, not forEach. As per the forEach doc: For parallel stream pipelines, this operation does not guarantee to respect the encounter order of the stream, as doing so would sacrifice the benefit of parallelism. For any given element, the action may be performed at whatever time and in whatever thread the …
2022 notice: this answer predates the introduction of worker threads in Node.js How do I make this be actually parallel? First, you won’t really be running in parallel while in a single node application. A node application runs on a single thread and only one event at a time is processed by node’s event loop. …
I know the topic is quite old now, but as it still appears as the first answer when typing ‘multiprocessing logical core’ in google… I feel like I have to give an additional answer because I can see that it would be possible for people in 2018 (or even later..) to get easily confused here …
It means that the two threads are not running in sync, that is, they are not both running on the same timeline. I think it’s a case of computer scientists being too clever about their use of words. Synchronisation, in this context, would suggest that both threads start and end at the same time. Asynchrony …