work-stealing | 易学教程

How can I enforce CUDA global memory coherence without declaring pointer as volatile?

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问题 I'll first do some contextualization. I'm trying to implement a non-blocking work stealing method using deques in CUDA. The deques (aDeques) are in a block-segmented array in global memory and the popWork() device function has the objective of popping work to feed threads. In addition of the global deques, each block has a stack in shared memory (aLocalStack) where it can locally work. The pop occurs in 3 levels. First attempt is in the shared stack, second attempt is in the deque owned by

How can I show that in Java Fork/Join framework work-stealing occurs?

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问题 I would like to improve my fork/join little example to show that during Java Fork/Join framework execution work stealing occurs. What changes I need to do to following code? Purpose of example: just do a linear research of a value breaking up work between multiple threads. package com.stackoverflow.questions; import java.util.LinkedList; import java.util.List; import java.util.Random; import java.util.concurrent.ForkJoinPool; import java.util.concurrent.RecursiveTask; public class CounterFJ<T

Is Work Stealing always the most appropriate user-level thread scheduling algorithm?

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问题 I've been investigating different scheduling algorithms for a thread pool I am implementing. Due to the nature of the problem I am solving I can assume that the tasks being run in parallel are independent and do not spawn any new tasks. The tasks can be of varying sizes. I went immediately for the most popular scheduling algorithm "work stealing" using lock-free deques for the local job queues, and I am relatively happy with this approach. However I'm wondering whether there are any common

Implementation of a work stealing queue in C/C++? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 9 days ago . I'm looking for a proper implementation of a work stealing queue in C/CPP. I've looked around Google but haven't found anything useful. Perhaps someone is familiar with a good open-source implementation? (I prefer not to implement the pseudo-code taken from the original academic papers). 回答1: No free lunch.

Is Work Stealing always the most appropriate user-level thread scheduling algorithm?

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I've been investigating different scheduling algorithms for a thread pool I am implementing. Due to the nature of the problem I am solving I can assume that the tasks being run in parallel are independent and do not spawn any new tasks. The tasks can be of varying sizes. I went immediately for the most popular scheduling algorithm "work stealing" using lock-free deques for the local job queues, and I am relatively happy with this approach. However I'm wondering whether there are any common cases where work-stealing is not the best approach. For this particular problem I have a good estimate of

Implementation of a work stealing queue in C/C++?

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I'm looking for a proper implementation of a work stealing queue in C/CPP. I've looked around Google but haven't found anything useful. Perhaps someone is familiar with a good open-source implementation? (I prefer not to implement the pseudo-code taken from the original academic papers). No free lunch. Please take a look the original work stealing paper . This paper is hard to understand. I know that paper contains theoretical proof rather than pseudo code. However, there is simply no such much more simple version than TBB. If any, it won't give optimal performance. Work stealing itself incurs

work stealing algorithm [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I am reading an article about Concurrency Runtime, and there is algorithm named work stealing in this article. but I have no idea what this algorithm is! so I want a little explanation or some good link that could help me to make a presentation about this algorithm. 回答1: Are any

work stealing algorithm [closed]

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I am reading an article about Concurrency Runtime, and there is algorithm named work stealing in this article. but I have no idea what this algorithm is! so I want a little explanation or some good link that could help me to make a presentation about this algorithm. Are any of these helpful? Work-Stealing in .NET 4.0 Scheduling Multithreaded Computations by Work Stealing I recently read that paper, which describes a Java Fork / Join framework with Work Stealing Algroithms found here Taken from that paper, we start with this: Result solve(Problem problem) { if (problem is small) directly solve

Java ForkJoinPool with non-recursive tasks, does work-stealing work?

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问题 I want to submit Runnable tasks into ForkJoinPool via a method: forkJoinPool.submit(Runnable task) Note, I use JDK 7. Under the hood, they are transformed into ForkJoinTask objects. I know that ForkJoinPool is efficient when a task is split into smaller ones recursively. Question: Does work-stealing still work in the ForkJoinPool if there is no recursion? Is it worth it in this case? Update 1: Tasks are small and can be unbalanced. Even for strictly equal tasks, such things like context