cuda thrust :: remove_if throws“thrust :: system :: system_error” for device_vector？

问题描述

我目前在VS 2013下使用CUDA 7.5。
今天我需要从 device_vector 中删除​​一些元素，因此决定使用 remove_if 。但是我修改代码，程序只是编译好，但在运行时抛出thrust :: system :: system_error。

I am currently using CUDA 7.5 under VS 2013.Today I needed to remove some of the elements from a device_vector, thus decided to use remove_if. But however I modify the code, the program just compiles well but throws "thrust::system::system_error" at run time.

首先我尝试了自己的代码： / p>

Firstly I tried my own code:

int main()
{
    thrust::host_vector<int> AA(10, 1);
    thrust::sequence(AA.begin(), AA.end());
    thrust::host_vector<bool> SS(10,false);
    thrust::fill(SS.begin(), SS.begin() + 5, true);
    thrust::device_vector<int> devAA=AA;
    thrust::device_vector<bool> devSS = SS;
    thrust::device_vector<int>::iterator new_end = thrust::remove_if(thrust::device,
    devAA.begin(), devAA.end(), devSS.begin(), thrust::identity<int>());
}

但它引发 thrust :: system :: system_error 。但是，如果我使用两个 host_vector ，即 AA 和 SS 执行 remove_if ，一切正常。

But it throws thrust::system::system_error at run time. However, if I use two host_vector, i.e. AA and SS to perform remove_if, everything goes fine.

然后，我尝试了，在Robert Crovella的答案中的代码似乎工作得很好，但在我的机器上，它仍然抛出 thrust :: system :: system_error 。

Then, I tried the code I found on stackoverflow here, the code in Robert Crovella's answer seemed work fine, but on my machine, it still throws thrust::system::system_error.

新版本的推力修改了什么吗？或者我应该尝试一些其他的方式？我使用cmake来组织代码，有什么特别的吗？

Did new version of thrust modify anything? Or I should try some other way? I am using cmake to organise the code, is there any thing special?

推荐答案

问题似乎是OP正在构建32位项目。切换到64位项目时，问题得以解决。

The problem appears to be that OP was building a 32-bit project. The issue was resolved when switching to a 64-bit project.

我对CUDA 7.5及更高版本的建议是只使用64位项目。如果您在和

Purely as a matter of conjecture, this issue may be related to thrust issue #715

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