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并行MCTS代码不理解 #39

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huskyth opened this issue Feb 23, 2024 · 3 comments
Open

并行MCTS代码不理解 #39

huskyth opened this issue Feb 23, 2024 · 3 comments

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@huskyth
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huskyth commented Feb 23, 2024

大佬simulate的时候难道不会导致多个线程同时从while 中break，对同一个root执行inference吗
@hijkzzz
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hijkzzz commented Feb 25, 2024

有锁的

@huskyth
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huskyth commented Feb 28, 2024

有锁的

就是刚开始多个线程都进入simulate，但是还没到leaf的锁的时候，都从break跳出了，那同一个根节点是不是会计算多次啊，还是并行mcts只能尽量高地接近串行的mcts的性能

@hijkzzz
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hijkzzz commented Mar 3, 2024

有锁的

就是刚开始多个线程都进入simulate，但是还没到leaf的锁的时候，都从break跳出了，那同一个根节点是不是会计算多次啊，还是并行mcts只能尽量高地接近串行的mcts的性能

对的 所以我们有一个叫 virtual loss 的东西

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@hijkzzz @huskyth